geas reviewer

7/18/2019 GEAS Reviewer

http://slidepdf.com/reader/full/geas-reviewer-569761c9436c9 1/34

GEAS: Chemistry

1. How many zeroes in the measurement 0.00020040 are significant?a. three . four c. si! ". se#en

2. $hich of the fo%%owing "escries a chemica% change?

a. $ater oi%ing to form steam. Sugar "isso%#ing in a cu& of coffeec. Hamurger grease so%i"ifying on a &%ated. Tarnishing silver

'. A homogenous mi!ture can e se&arate" y a%% of the fo%%owing metho"s e!ce&ta. Filtration. Chromatogra&hyc. Crysta%%ization". (isti%%ation

4. $hich of the fo%%owing is not a &ure sustance?

a. Hy"rogen. )!ygenc. $ater d. Milk

*. A %aoratory e!&eriment was &erforme" to "etermine the &ercent y mass of water in ahy"rate. +he acce&te" #a%ue is ',.0- water whose oser#e" #a%ue has an error of*.00-. in" the &ercent y mass of water.a. '1.0- water . ',.0- water c. 37.8% water ". 41.0- water

',- / 1.0* '.-

,. $hich of the fo%%owing &hase changes re&resent su%imation?

a. Solid gas

b. Gas so%i"

c. So%i" %i3ui"

d. Gas %i3ui"

. +he amount of energy nee"e" to change a gi#en mass of ice to water at constanttem&erature is ca%%e" the heat of

a. Fusion. ormationc. Con"ensation". Crysta%%ization

. $hich of the fo%%owing is a inary com&oun"?a. Hydrochloric acid. )!ygenc. Citric aci"



". So"ium ch%orate

. An e!am&%e of a ternary com&oun" is

a. Potassiu chlorate. Ammonia

c. Si%#er ch%ori"e". So"ium romi"e

10. $hat is the charge of a hy"rogen atom?

a. . c. d.

11. +he im&ossii%ity of 5nowing oth the &recise %ocation an" #e%ocity of suatomic &artic%eat the same time is 5nown as thea. (iffraction &rinci&%e . 6roai%ity &rinci&%ec. 7imiting &rinci&%e d. !ncertainty "rinci"le

12. An atom which has the greatest ai%ity to attract e%ectron isa. #$ygen. 8itrogenc. Su%fur ". 9romine

1'.

How many mo%ecu%es of can e forme" using 2 mo%ecu%es of 8)?

a. 1 b. c. ' ". 4

14. f the #o%ume of the mo%e of gas mo%ecu%es remains constant; %owering the tem&erature

wi%% ma5e the &ressure

a. &ncrease. (ecreasec. ncrease then "ecrease". (ecrease then increase

1*. $hene#er you ha#e e3ua% #o%umes of gases at the same tem&erature an" &ressure; the

#o%ume must

a. 'ontain e(ual nuber o) "articles. Contain 2.4 mi%%i%iters of S+6c. Contain one mo%e of any gas at S+6". Contain the A#oga"ro<s numer

6= m>+



1,. $hat &ressure must e a&&%ie" to 22*m7 of gas at 1atm to re"uce its #o%ume to 100m7?a. 0.44atmb. .*atc. 22*00atm". 110atm

61=162=2

1. How many mo%es of are &resent in 44.7 of at S+6?

a. 1.2 mo%es

. 1.4 mo%es

c. .+ oles

". 2. mo%es At S+6; 1 mo%e wi%% occu&y 22.47

1. +he &ro&erties of so%ution inc%u"e a%% of the fo%%owing e!ce&t thata. t is homogeneous mi!ture if it has een we%% stirre"b. ,issolved "articles will settle out u"on stirringc. t is c%ear an" trans&arent with &artic%es too sma%% to e seen". (isso%#e" &artic%es wi%% &ass through a &iece of fi%ter &a&er

1. t refers to matter that "o not ha#e "efinite form or structurea. -or"hous . or&hous c. +ransient ". E!trinsic

20. +hree grams of su%&hur "isso%#e" in 200 g of na&htha%ene C10H; was foun" "ecreasingthe freezing &oint of the so%#ent to 0.2 C. in" the mo%ecu%ar weight of the so%ute. @⁰ f

C10H ,. CBmo%ar⁰

a. '*1.1, gBmo%e . 11*.'2 gBmo%e

c. 3*./ g0ole ". 1*1.2' gBmo%e

gD mo%e 1'*.,1 gramsBmo%e

21. Sustance ha#ing a &H %e#e% %ess than @"ia aci"?

a. aci" b. base c. sa%t ". hy"rate

22. t is a &ro"uct of the weathering of com&%e! si%icates; &articu%ar%y of fe%"s&ars which are

aun"ant minera%s.

a. clay . cha%5 c. &yrite "."iamon"



2'. E%ectrons occu&y a%% the orita%s of a gi#en sushe%% sing%y efore &airing egins. +heseun&aire" e%ectrons ha#e &ara%%e% s&ins. +his is 5nown as:a. 9ui%"ing & 6rinci&%eb. Aufau 6rinci&%ec. Hund1s 2uled. (a#i"<s >u%e

24. t is the scattering of %ight y co%%oi"a% &artic%esa. ott Scaterring b. Tyndall ))ect c. >ay%eigh Scattering ". $o%f Effect

2*. Consi"er H' As)'; Arsenic aci" @H1.01;As4.;)1,.0.How many mo%e is 15g of

H' As)'?

a. 7.45 oles . ,.4 mo%es c. *.4 mo%es ". .4 mo%es

H' As)' '@1.01 gBmo% F 4. gBmo% F '@1,.0 gBmo% 12*.' gBmo%

mo%es H' As)' @15g@1 mo%B12*.'g .4 mo%es H' As)'

2,. t is customary to in"icate accuracy y using a certain numers of figures or "igits.

a. atomic mass unit . nternationa%system

c. signi)icant )igures ". su&&%ementaryunits

2. t is re3uire" for organic com&oun"s.

a. hy"rogen . o!ygen c. oron d. carbon

2. +erm use" to "enote the techno%ogy of treating a mine" ore to otain a &ro"uct higher on

concentration of a wante" minera% from the unwante" roc5 mass in which it occurs.

a. ore dressing . ga%#anization c. a%%oying ". fi%tering

2. +he energy &ossesse" y a sustance that a%%ows it to e change" into a new

sustance.

a. 'heical energy . 6hysica% energy c. 6otentia% energy ". 8uc%ear energy

'0. f heat is asore" y the system "uring a chemica% change; it is ca%%e" as:

a. e!otherma% . en"otherma% c. endotheric ". e!othermic

'1. t is consi"ere" as "eri#ati#es of ammonia in which one or more of the hy"rogens ha#e

een re&%ace" y the a%5y% or ary% grou&. t is characterize" y un&%easant o"orsa. A%5anes . Esters c. -ines ". 8itri%es



'2. Ca%cu%ate the mo%ar concentration of a so%ution that contains 1*g of &otassium hy"ro!i"e

in 22*m% of so%ution.

a. . M . 11. c. 4.4, ". 2.,0

''. Ca%cu%ate the ratio of the rate of "iffusion of hy"rogen to the rate of "iffusion of o!ygen.How fast "oes hy"rogen "iffuse than o!ygen? Gi#en: (ensity of o!ygen is 0.0 gB7

an" the "ensity of o!ygen is 1.4' gB7. a. )ne . +wo c. +hree d. Four

'4. $hat is the #o%ume of 1 mo%es of a gas at 2 atm an" 2' ?a. 1.12 7 . 107 c. .6 ". 1127= 224 7 ! @nB1mo% ! @1atmB2atm 11.27

'*. t is a orosi%icate g%ass with a #ery %ow coefficient of therma% e!&ansion; hence; its wi"e

for coo5ing an" ser#ing utensi%s.a. 7ime G%ass b. Pyre$ c. Si%icones ". eotites

',. $hat is the mass in 5i%ograms of 10.* ga% @'. 7 of gaso%ine with a s&ecific gra#ity of

0.2.a. 10.* 5g . 2 5g c. 33 kg ". 44 5g

S&ecific gra#ity of gaso%ine is 0.2

(ensity 0.2 times the "ensity of water

(ensity s&ecific gra#ity ! "ensity of water

@0.2@0.

0.2 gBm7

='.7 '00 m7

( ! =

@0.2@'00 '' 5g

'. t is a co%or%ess so%i" ca&a%e of eing cut into ri%%iant crysta%s is the har"est; must

arasi#e minera% 5nowna. Gra&hite . Charcoa% c. ,iaond ". Si%icon

'. t is the ca%cu%ation of oth energy a%ances an" materia% a%ances in a chemica% system.a. o%arity . o%a%ity c. Ca%orimetry d. Stoichioetry



'. IIIIIIIII in#o%#es the re&%acement of one of the atoms or grou&s of atoms attache" to

the caron J9ac5oneK of the organic mo%ecu%e.a.ha%ogination . chemica% reaction c. A""ition reaction d. Substitution 2eaction

40. Ca%cu%ate the #o%ume @in 7itres occu&ie" y .40g of 8H' at S+6 @Stan"ar"

+em&erature; an" 6ressurea. .'7 . 10.'7 c . 4.736 ". 12.'7

>ecognizing that 1mo%e of an i"ea% gas is e3ua% to& 22.47 at S+6 an" using the mo%ar mass of

8H' @1.0'g

= .40g 8H' ! 1 mo% 8H' ! 22.47II .'7

1.0'g 8H' 1 mo% 8H'

41. t is the Energy change accom&anying a mo%e of e%ectrons eing a""e" to a mo%e of a

gaseous atoms or ions.a. lectronic -))inity . 9ing%ing Energyc . 9iochemica% Energy ". ission

42. A si%icon chi& use" in an integrate" circuit of a microcom&uter has a mass of *.,mg.

How many si%icon @Si atoms are &resent in this chi&?a. *.,!10D' atomsb. 2.02!1010atomsc. .$++atosd. 2.22!1020atoms

*.,mg Si ! 1g Si ! 1mo% Si ! ,.022!102' 1.22!1020atoms1;000 mg Si 2.0 g Si 1 mo% Si

4'. +his &rocess se&arates the com&onents of a mi!ture on the asis of "ifferences in

&artic%e size. t is use" most often to se&arate a %i3ui" from a so%i".a. Crysta%%ization . E!traction c. Filtration ". Chromatogra&hy

44. Su%fur He!af%uori"e @S, is a co%or%ess; o"or%ess; #ery unreacti#e gas. Ca%cu%ate the

&ressure @in atm e!erte" y 1.2 mo%es of gas in a stee% #esse% of #o%ume *.4'7 at

4*LC.a. ,.* atm . .* atm c. 8.7* at ". .* atm

6 In>+I

=

6 @1.2mo% @0.0217.atmB.mo% @4*F2'

*.4'



6 .* atm

4*. t is "efine" as the &ressure e!erte" y a force of one newton acting on an area of one

s3uare meter.a. e%#in . eter c. Pascal ". 8ewton

4,. A ott%e of certain ceramic ti%e c%eanser; which essentia%%y a so%ution of hy"rogench%ori"e; contains 1'0g of HC% an" *0g of water. $hat is the &ercent y mass of HC% in

this c%eanser?a. 1*.- . 1,.'- c. 5.8% ". 1'.-

-so%ute mass so%uteI ! 100

mass so%ution

-so%ute IIII1'0gIIII ! 100

1'0g F *0g

-so%ute 14.-

4. A co#a%ent on" etween two atoms with "ifferent e%ectronegati#ities; so that the

e%ectron "ensity is unsymmetrica%%y "istriute".a. 8onD 6o%ar on" b. Polar bond c. Sing%e on" ". +ri&%e on"

4. $hich e%ement has the highest ionization &otentia% of its atom?a. Hy"rogen . )!ygen c. Heliu ". inc

4. t is the minimum amount of ra"ioacti#e materia% nee"e" to sustain a nuc%ear chain

reaction.

a. o%ar mass b. 'ritical ass c. o%ecu%ar mass ". Atomic mass unit

*0. n the atmos&here; nitrogen "io!i"e reacts with water to &ro"uce nitric aci"; whichcontriutes to &o%%ution y aci" rain: '8)2@g F H2)@% DDDDDM 2H8)'@a3 F 8)@g How manygrams of H8)' are &ro"uce" for e#ery 1.0mo% of 8)2 that reacts? +he mo%ecu%ar weightof H8)' is ,'.0amu.

a. 5 g H#3 . 42 5g H8)' c. 4.2 g H8)' ". 42 mg H8)'

1.0mo% 8)2@2mo% H8)'B'mo% 8)2@,'g H8)'B1mo% H8)'42g H8)'

*1. IIIIII states that in the a""ition of &o%ar reagents to a%5enes; the &ositi#e &ortion of the

reagents a""s to the caron atom in the "ou%e on" that a%rea"y has the most

hy"rogen atoms.

a. Markovnikou1srule

. 7e Chate%ier<s&rinci&%e

c. 7oc5Dan"D5eytheory

". 6au%i E!c%usion+heory



*2. IIIIIII are atoms that ha#e com&%ete%y fi%%e" ns an" n& sushe%%s; gi#ing them great

stai%ity.

a. A%5a%i eta%s b. oble ases c. Ha%ogens ". a%5a%ine earthmeta%s

GEAS: 6hysics1. Su&&ose that energy Q is re3uire" to acce%erate a car from rest to v ; neg%ecting

friction. How much a""e" energy wou%" e re3uire" to increase the s&ee" from v to

2v ?a. N .2N c. 39 ".4N

sing the energy e3uation $E2 O E1

N 0.*m#2 O 0 D con"ition 1

$ 0.*m@2#2 O 0.*m#2 D con"ition 2

$2m#2 O 0.*m#2 '@0.*m#2 39

2. Su&&ose you want to store 1.00 P of e%ectric &otentia% energy in a #o%ume of 1.00 m'

in #acuum. $hat is the magnitu"e of the re3uire" e%ectric fie%"?

a. +.57* M:0 . 0.'',=Bm c. 0.22*+=Bm ". 0.11'+=Bm

u=1.00J/1.00m3 = 1.00J/m3

E=0.475 MV/m (a)

'. ateria% a is a water an" materia% b is a g%ass with in"e! of refraction 1.*2. f the

inci"ent ray ma5es an ang%e of ,0o with the norma%; fin" the "irection of the ref%ecte"

ray.

a. 4.'o . 1.'o c. /+o ". '4.o

Accor"ing to %aw of ref%ection; ; hence if then (c)

4. +he wa#e%ength of the re" %ight from a he%iumDneon sensor is ,'' nm in air ut 44

nm in the a3ueous humor insi"e our eyea%%s. Ca%cu%ate the s&ee" of %ight in this

sustance.

a. .* $ +8 0s . '.2* ! 10 mBs c. '.00 ! 10 mBs ". 1.2* ! 10 mBs



or the #e%ocity of %ight in this in"e! we ha#e:

(a)

*. A s&aceshi& mo#ing away from Earth with s&ee" of 0.00c fires a root s&ace &roe

in the same "irection as its motion; with s&ee" of 0.00c re%ati#e to the s&aceshi&.

$hat is the &roe<s #e%ocity re%ati#e to the Earth?

a. 0.00c . 0.'4*c c. 0.00c d. +.48c

,. n o&tics; this effect refers to the %urring of the image &ro"uce" on a conca#e mirror

"ue to the con#ergence of rays far from the mirror to other &oints on the &rinci&a%

a!is. $hat "o you ca%% this effect?

a. s"herical aberration

. foca% "i#ergence

c. &ara%%a! error

". Sne%%<s effect

. n f%ui" mechanics; this shows that the &ressure of a f%ui" "ecreases as the s&ee" of

the f%ui" increases. n a""ition; the &ressure of a f%ui" "ecreases as the e%e#ationincreases.

a. C%airut<s e3uation b. ;ernoulli1s e(uation

c. a!we%%<s e3uation ". Hyr"of%ui" e3uation



. n e%ectro"ynamics; what term refers to the a#erage s&ee" of the charge carriers?

a. "rag #e%ocity . mo%ecu%arD5inetic s&ee" c. dri)t s"eed ". charge #e%ocity. n e%ectromagnetics an" wa#e theory; what refers to wa#es; common%y generate" y

e%ectronic "e#ices; whose wa#e%engths ranges from a&&ro!imate%y 0.'m to 10 D4 m.

(ue to their short wa#e%engths these are often use" in ra"ar systems an" for

stu"ying the atomic an" mo%ecu%ar &ro&erties of matter.a. >a"io wa#es b. Microwaves c. A wa#es ". >a"ar wa#es

10. +he &osition ! of an e!&erimenta% roc5et mo#ing a%ong a %ong rai% is measure" to e

!@t @4mBst F @mBs2t2 F @*mBs't' O @0.'*mBs4t4 o#er the first 10s of its motion;

where t is in secon"s an" ! is in meters. in" the #e%ocity of the roc5et for the first 10

secon"s.a. 4' mBs . 224 mBs c. 550s ". 2240 mBs

# "!B"t @4mBs F @14mBs2t F @1*mBs't2 O @1.4mBs4t'

Sustituting t 10 s; gi#es

# 244 mBs11. Ear%y in the nineteenth century; Pames $att in#ente" the steam engine. n or"er to

con#ince &eo&%e; who re%ie" hea#i%y on horses for mechanica% wor5; he "emonstrate"

how usefu% his steam engine was y uti%izing a horse that %ifte" water from a we%% o#er

a certain &erio" of time an" ca%%e" the corres&on"ing &ower e!&en"e" Jone

horse&owerK. Assume that water has a mass "ensity of 1.0 ! 10' 5gBm'; that the we%%

was 20m "ee&; an" that the horse wor5e" for hours. How many %iters of water "i"

the horse raise from the we%%? se the fo%%owing constants: 1 h& 4, $atts; g .

mBs2.

a. 1.1 ! 10

2

7 . 110 7 c. 1.1 ! 10

'

7 d. . $ +

*

6+he wor5 "one of the tension in %ifting a mass of water is gi#en y:

$ m g ∆y where $ wor5; m mass p=; ∆y "istance; = #o%ume; p

mass "ensity;

+he &ower is gi#en y:

6 wor5 Btime;t

yVg ∆ ρ

Sustituting a%% #a%ues; we get for =

= ( )( )

( )( )( )32

233 101.120/8.9/101

/36008746m x

m smmkg x

h shxW =

Since 1 m' 10' 7; then = 1.1 ! 10*7.



12. t states that; Qf a stress is &%ace" on a system on e3ui%irium wherey the

e3ui%irium is a%tere"; that change wi%% ta5e &%ace which ten"s to re%ie#e or neutra%ize

the effect of the a""e" stressQ.

a. 6e 'hatelier<sPrinci"le

. Sne%%s 7aw c. Huygens 6rinci&%e ". A#ogra"os 7aw

1'. $ho "etermine" the 3uantitati#e re%ationshi& etween the amount of e%ectricity use"

in e%ectro%ysis an" the amount of chemica% reaction that occurs?a. Ernest >utherfor" b. Michael Faraday c. arie Curie ". Pohn (a%ton

14. J+he Acce%eration of a &articu%ar o"y is "irect%y &ro&ortiona% to the resu%tant forceacting on it an" in#erse%y &ro&ortiona% to its massK is a statement of

a. Pou%e<s 7aw. 1st 7aw of +hermo"ynamics

c. ewton1s nd 6aw o) Motion". 9oy%e<s 7aw

GEAS: +hermo"ynamics

1. t is the transfer of energy from the more energetic &artic%es of sustance to the

a"Racent %ess energetic ones as a resu%t of interactions etween the &artic%es.

a. 'onduction. >a"iationc. Con#ection". Asor&tion

2. t in"icates that the rate of heat con"uction in a "irection is &ro&ortiona% to thetem&erature gra"ient in that "irection.

a. Fourier1s 6aw o) Heat 'onduction. ourier<s 7aw of Heat Con#ectionc. ourier<s 7aw of Heat >a"iation". ourier<s 7aw of Heat Asor&tion

'. $hich of the fo%%owing is consi"ere" the est con"uctor of heat? @sa

&ag5a5aa%am 5o Si%#era. Go%" . Co&&er c. Si%#er d. ,iaond

4. t is the mo"e of energy transfer etween a so%i" surface an" the a"Racent %i3ui"

or gas that is in motion; an" it in#o%#es the comine" effect con"uction an" f%ui"

motion.

a. Con"uction c. 'onvection. >a"iation ". Asor&tion



*. t is the energy emitte" y the matter in the form of e%ectromagnetic wa#es as a

resu%t of the changes in the e%ectronic configurations of the atom or mo%ecu%es.a. Con"uctionb. 2adiationc. Con#ection

". Asor&tion

,. t states that energy can neither e "estroye" nor create" it can on%y change

forms.a. First law o) therodynaics. Secon" %aw of thermo"ynamicsc. +hir" %aw of thermo"ynamics". eroth %aw of thermo"ynamics

. n secon" %aw of thermo"ynamic; which of the fo%%owing state that no heat engine

can ha#e a therma% efficiency of 100- or as far as &ower &%ant to o&erate; the

wor5ing f%ui" must e!change heat with the en#ironment as we%% as the furnace.a. =elvin >Plank Stateent. C%ausiusD6%an5 Statementc. C%ausius Statement". e%#in Statement

. n secon" %aw of thermo"ynamic; which of the fo%%owing state that no "e#ice can

transfer heat from coo%er o"y to a warmer one without %ea#ing an effect on the

surroun"ings.

a. e%#in O6%an5 Statement. C%ausiusD6%an5 Statement

c. 'lausius Stateent". e%#in Statement

. t is "efine" as the amount of %ight out&ut in %umens &er $ of e%ectricity

consume".

a. 7ight intensity c. 6ight e))icacyb. 7ight efficiency ". 7ight %uminosity

10. Carnot cyc%e is com&ose" of how many re#ersi%e &rocesses?a. 1 . 2 c. ' d. 5

11.

$hich of the fo%%owing &rocesses are in#o%#e" in carnot cyc%e?a. +wo isotherma% two isoaric. )ne isotherma% three a"iaaticc. +hree isoaric one a"iaaticd. Two adiabatic ? two isotheral

12. State that the therma% efficiencies of a%% re#ersi%e heat engines o&erating

etween the same two reser#oirs are the same; an" that no heat engine is more

efficient than a re#ersi%e one o&erating etween the same two reser#oirs.



a. +hrott%e &rinci&%e. )tto &rinci&%ec. 'arnot "rinci"le". e%#in &rinci&%e

1'. A carnot heat engine recei#es *00P of heat &er cyc%e from a highDtem&erature

source at ,00 LC an" reRects heat a %ow tem&erature sin5 at 40LC. (etermine thetherma% efficiency of this Carnot engine.

a. '.''- . ,.,- c. '*.*- d. /5.*%

14. A &iston cy%in"er "e#ice contains a %i3ui"D#a&or mi!ture of water at 400. (uring

a constant &ressure &rocess; 00 P of heat is transferre" to the water. As a

resu%t; &art of the %i3ui" in the cy%in"er #a&orizes. (etermine the entro&y change

of the water "uring this &rocess.

a. .7*k@0= . 205PD c. 0005P ". 0.*B5P

1*. $hich of the fo%%owing e3uation of state has two constants?

a. :ander Aaals (uation. 9eattieD9ri"geman E3uation

c. 9ene"ictD$eD>uin E3uation". Strori"ge E3uation

1,. How many constant are there in Strori"ge E3uation of State?

a.1' . 14 c. 1* d. /

1. $hich of the fo%%owing e3uation of state has eight constant?

a. =an"er $aa%s E3uation. 9eattieD9ri"geman E3uationc. ;enedictBAebbB2ubin (uation". Strori"ge E3uation

1. Consi"er a &erson stan"ing in a reezy room at 22LC. (etermine the tota% rate of

heat transfer from this &erson if the e!&ose" surface area an" the a#erage outer

surface tem&erature of the &erson are 1.2 m2 an" ''LC; res&ecti#e%y; an" the

con#ection heat transfer coefficient is , $Bm2.T0.* an" U*.,!10D $Bm4D4

%)15.64(6415.0)273600(

)27340(11 =

+

+−=−=

K

K

T

T

H

Lη

K

kJ

K

kJ

T

QS 75.1

400

700===∆



a. 120.*PBs . 1'*.PBs c. 53.@0s ". 1*1.PBs

1. A &iston cy%in"er "e#ice initia%%y contains 0. m' of air at 11056a an" 0LC. +heair is now com&resse" to 0.2 m' in such a way that the tem&erature insi"e thecy%in"er remains constant. (etermine the wor5 "one "uring this &rocess.a. Bk@ . D12'5P c. D1245P ". D12*5P

20. t is the energy &ossesses y the system as a resu%t of its e%e#ation with res&ect

to the gra#itationa% acce%eration of the earth.

a. Potential .inetic c. omentum ".m&u%se

21. t states that if two o"ies are in therma% e3ui%irium with a thir" o"y; they area%so in therma% e3ui%irium with each other.

a. irst %aw of thermo"ynamics. Secon" %aw of thermo"ynamicsc. +hir" %aw of thermo"ynamicse. Ceroth law o) therodynaics

22. (etermine the mass of the air in a room whose "imensions are @*!,! cm at

10* 56a an" 2LC.

2'. Heat is transferre" to a heat engine from a furnace at a rate of 2$. f the rateof waste heat reRection to a neary ri#er is 4*$; "etermine the net &owerout&ut an" the therma% efficiency for this heat engine.a. 4.1- b. *.+4% c. '2.4- ". ,.1*-

s J W W W Q

W

K m K m

W x

T T Q

W

C mC m

W

T T hAQ

total

surr sradiation

f sconvection

/2.1432.1432.7766

2.77=

])27322()27433)[(2.1)(1067.5(95.0=

)(

66=

)2233)(2.1(5=

)(

4442

44

8

44

2

2

==+=

+−+−

−=

°−°

−=

−

εσ

kJ mka

kJ mkaW 122)

1

1)(

8.0

2.0ln()8.0)(110(

3

3 −=−

=

g K

m x xka

T !

V m

!

K kg m

ka

K kg m

ka

1.256)27327(287.0

)765(105

'

287.0R'

constantgas'

/

3

/air

3

3

=+

==

=

=

−

−

(51.09%)5109.0

92

4511

45

92

=−=−=

=

=

H

L

s

"J L

s

"J H

Q

Q

Q

Q

η



24. +he foo" com&artment of a refrigerator is maintaine" at 4LC y remo#ing heat

from it at a rate of '00 PBmin. f the re3uire" &ower in&ut to the refrigerator is'$; "etermine the coefficient of &erformance of the refrigerator.

a. ./7 . 2.'' c. '., ". 4. 12

2*. A *0 5g iron %oc5 at 0LC is "ro&&e" into an insu%ate" tan5 that contains 0.* m'

of %i3ui" water at 2*LC. (etermine the tem&erature when therma% e3ui%irium

reache". +he s&ecific heat of iron is 0.4*5PB5gDLC an" for water is 4.15PB5gDLC.

a. 20. LC b. *./D' c. '0.1LC ". '*.,LC

2,. A rigi" tan5 contains a hot f%ui" that is coo%e" whi%e eing stirre" y a &a""%ewhee%. nitia%%y; the interna% energy of the f%ui" is *05P. (uring the coo%ing&rocess; the f%ui" %oses **05P of heat; an" the &a""%e whee% "oes 2005P of wor5on the f%ui". (etermine the fina% energy of the f%ui". 8eg%ect the energy store" in

the &a""%e whee%.a. *++k@ . **0 5P c. ,005P ". ,*0 5P

2. +hree mo%es of an i"ea% gas are com&resse" s%ow%y an" isotherma%%y from a#o%ume of * to 1.* ft'; at a tem&erature of '20. How much wor5 is "one?a. D.125P b. B4./k@ c. D10.445P ". D11.*5P

2. A 4Din wa%% of fire ric5; 5 9tuB@ft2DhrDBin; has one surface at '00; the other at

0. in" the heat con"ucte" through the area of 2ft2 in 1 "ay.a. E /8+;tu . 1; ,*09tu c. 1*;*109tu ". 10;'09tu

67.1)in/60

1(

3

in/300==

kJ

kW

kW

kJ C#

C T

C T C kg

kJ mC T kg

kg mC kg

kg

°=

=°−°−

+°−°−

6.25

0)25)(18.4(001.0

5.0)80)(45.0(50

2

2

3

2 3

kJ $

kJ kJ $ kJ

W $ Q

500

550)850(200

2

2

=

+−=+∆=

kJ J K K mol

J mol V

V n!T W 61.99.96125

5.1ln)320)(317.8(3ln

1

2

−=−=−==

!t"680#22=

4

90300)24)(2)(9( 2

2 in %

in %

hr ft hr ft

&tu

L

T kAt Q

−−

−−=

∆

∆=



2. f 0 g of iron shot at 100C is "ro&&e" into 200 g of water at 20C containe" in an

iron #esse% of mass *0 g; fin" the resu%ting tem&erature.a. 20.1LC . 21.LC c. 22. 'LC d. 5./D'

'0. $hen a 2% of rass at 212L is "ro&&e" into *% of water at '*L; the resu%tingtem&erature is 41.2L. in" the s&ecific heat of rass in 9tuB%DL.a. 1.120 b. +.+4 c. 0.'21 ". 1.2''

'1. How much heat is necessary to raise the tem&erature of 0.0 5g of ethy% a%coho%

from 1*LC of its oi%ing &oint .'LC?a. 105ca% . 205ca% c. 3+kcal ". 405ca%

'2. +he weightD"ensity of air at '2 an" 2.2 in Hg &ressure is 0.01 %Bft'. $hat isits weightD"ensity; in %Bft'; at an a%titu"e where the &ressure is 1'.' in Hg an"the tem&erature is D40?a. +.+55 . 0.0** c. 0.0,, ". 0.

''. t e!&%ains comustion as a resu%t of %oss of a sustance.

a. Phlogiston . >oasting c. >e"uction ". ission

C T

T T T

°=−+−=−

6.24

)20)(12.0(50)20)(1(200)100)(12.0(80

2

222

% l'

&tuC

% % % l'

&tul' % % C l'

QQ

QQ

(ater 'rass

gainlost

−=

−−

=−

=

=

091.0

)352.41)(1(5)2.41212)((2

kcal Q

C C g

cal kg Q

t mcQ

30

)153.78)(6.0(8.0

=

°−°−

=

∆=

32

21

21

21

044.0

233

73.13

273081.0

92.29

ft

l'

K x K x

T

T

mT

V

mT

V

=

=

=

=

ρ

ρ

ρ ρ



'4. +he #o%ume of a "efinite 3uantity of "ry gas is in#erse%y &ro&ortiona% to the

&ressure &ro#i"e" the tem&erature remains constant.

a. Char%es< 7aw b. ;oyle1s 6aw c. GayD7ussac<s 7aw ". (a%ton<s 7aw

'*. t is the entha%&y change associate" with the con"ensation of gaseous &ositi#ean" negati#e ion into a crysta%.

a >aou%t<s 7aw.

b. 6attice nergy c. Entha%&y )fSo%ution

". 6artition Coefficient

',. +his %aw states that at constant tem&erature the #o%ume of a sam&%e of gas #ariesin#erse%y with the &ressure.

a. A#oga"ro<s 7aw b. ;oyle1s 6aw c. Char%e<s 7aw ". GayD7ussac<s 7aw

'. A 4,,g sam&%e of $ater is Heate" from .*0<C to 4.,0<C. Ca%cu%ate the amountof Heat Asore" @in i%o Pou%es y the $ater.a. 1'0 P b. 4 =@ c . 12 P ". 1,0 P

3 mc∆t

@4,,[email protected] PBg VC@4.,0<C O .*0<C

12 P'. +his 7aw states that if a &rocess can e written as the sum of se#era% ste&wise

&rocesses; the Entha%&hy change the tota% &rocess e3ua%s the sum of theEntha%&hy changes of the =arious Ste&s.a. Gauss 7aw b. Hess 6aw c . 9oy%es 7aw ". 8ewton<s 7aw

'. IIIIIIIII states that a constant &ressure an" tem&erature; the #o%ume of a gasis "irect%y &ro&ortiona% to the numer of mo%es &resent.

a. 9oy%e<s 7aw . Char%e<s 7aw c. GayD7ussac<s 7aw d. -vogrado1s 6aw

40. IIIIIII states that the &artia% &ressure of a so%#ent o#er a so%ution is gi#en ythe #a&or &ressure of the &ure so%#ent times the mo%e fraction of the so%#ent inthe so%ution.

a. (a%ton<s %aw of&artia% &ressure

. "e 9rog%ie<shy&othesis

c. Aufau &rinci&%e d. 2aoult1s 6aw

41. +he &ro&erty of a sustance which remains constant if no heat enters or %ea#esthe system; whi%e it "oes wor5 or a%ters its #o%ume; ut which increases or"iminishes shou%" a sma%% amount of heat enter or %ea#e.a. interna% energy. systemc. entro"y". entha%&y



42. +he 3uantity of heat re3uire" to change the tem&erature of unit mass throughone "egree.a. +em&eratureb. S"eci)ic Heatc. +herma% E3ui%irium". Ca%orie

4'. Jf the tem&erature of a gi#en 3uantity of gas is he%" constant; the #o%ume of thegas #aries in#erse%y with the aso%ute &ressure "uring a change of stateKa. Genera% Gas 7aws. Pou%e<s 7awc. Char%es< 7aw". ;oyle1s 6aw

44. An interna%%y re#ersi%e &rocess of a sustance "uring which the &ressureremains constant.a.isometric .isotherma% c.a"iaatic d.isobaric

4*. +he energy store" in a sustance y #irtue of the acti#ity an" configuration of itsmo%ecu%es an" of the #iration of the atoms within the mo%ecu%es.a.&nternal nergy .Heat c. Entha%&y ".Entro&y

4,. J$hen two o"ies; iso%ate" from other en#ironment; are in therma% e3ui%iriumwith a thir" o"y; the two are in therma% e3ui%irium with each otherK is astatement of a. 1st 7aw of +hermo"ynamicsb. Ceroth 6awc. 2n" 7aw of +hermo"ynamics". a!we%%<s +heory of +herma% E3ui%irium

4. J8ot a%% energy recei#e" as heat y a heatDengine cyc%e can e con#erte" intomechanica% wor5; some are a%so reRecte"K is a statement of a. 1st 7aw of +hermo"ynamicsb. eroth 7awc. nd 6aw o) Therodynaicsd. 7aw of Conser#ation of Energy

4. +he comine" mass of car an" &assengers tra#e%%ing at 2 5mBhr is 1*005g. in"the 5inetic energy of this comine" mass.a.3++k@ .''05P c.'0*5P ". '105Pm#2 @1*005g@25mBhr2 @1000mB5m2

25 @2@15gDmB8Dsec2 @'000 secBhr2

'00;000 P or '00 5P4. A mass of *5g is 100m ao#e a gi#en "atum where %oca% g.* mBsec2. in" thegra#itationa% force in newton<s an" the &otentia% energy of the mass wB res&ect tothe "atum.

a.4.2* 8;42* P.*2.0* 8;*20* Pc.58.7* E587* @".4.* 8;4* P



6 mg z @*5g@.*mBsec2 @100m 4* P 5 @15gDmB8Dsec2

g mg *@.* 4.* 8 5 1

*0. A &ressure gage register *0 &sig in a region where the arometer is 14.2* &sia.

in" the aso%ute &ressure in 6a.a.4*' 56a .4'4 56a c.4'* 56a d.553 kPa

*1. (uring an isentro&ic &rocess of 1.', 5gBsec of air; the tem&erature increasesfrom 4.44L C to 11*.,LC. if C&1.00,258m for a nonDf%ow &rocess; what is WH? 5gXa.1*2.2 5gBs .1*2.2 PBs c.*. k@0s ".1*2.2 9tuBsWH mC&W+ 1.',[email protected],258mB5gX@'.*D2.* 1*2. 5PBs

*2. +his 7aw States that J +he 3uantity of the sustance entering the system is e3ua%to the sustance %ea#ing the systemK

a.1st 7aw of +hermo"ynamics b.6aw o) 'onservation o) Mass c.8ewton<s 2n" 7aw of otion ".7aw of Conser#ation of Energy

*'. Jif the &ressure of a gi#en 3uantity of gas is he%" constant; the #o%ume of the gas#aries "irect%y with the aso%ute tem&eratureK

a. Genera% Gas 7aw. 9oy%e<s 7awc. 'harles1 6aw

". Pou%e<s 7aw

*4. JEnergy is neither create" nor "estroye"; ut is con#erte" from one form toanotherK

a. st 6aw o) Therodynaics . 8ewton<s 2n" 7aw of otionc. 2n" 7aw of +hermo"ynamics". 7aw of Conser#ation of ass

GEAS: Strength of ateria%s

1. t occurs when a cutting action is a&&%ie" as you wou%" see with scissors; tin sni&s; or

&unches.

a. ,irect shear . 9en"ing Stressc. +orsiona% Shear ". +orsiona% Stress

2. t occurs when a memer carries a %oa" &er&en"icu%ar to its %ong a!is whi%e eing

su&&orte" in a sta%e manner.a. (irect shear b. ;ending Stress



c. +orsiona% Shear ". +orsiona% Stress

'. t is the interna% resistance offere" y a unit area of the materia% from which a memer

from which a memer is ma"e to an e!terna%%y a&&%ie" %oa".

a. stress . strain c. moment ". tor3ue

4. A certain su&&ort stan" "esign to carry "ownwar" %oa"s. Com&ute the stress in the

s3uare shaft at the u&&er &art of the stan" for a %oa" of 2;000 %. +he %ine of action of

the a&&%ie" of the a&&%ie" %oa" is centere" on the a!is on the shaft; an" the %oa" is

a&&%ie" through a thic5 &%ate that "istriutes the force to the entire cross section of the

stan".

a. 10;000&si . 11;000&si c. E+++"si ". 1';000&si

*. +he &ro&ortiona% %imit is the #a%ue of stress on the stressDstrain "iagram cur#e at which

the cur#e first "e#iates from a straight %ine.a. Pro"ortional liit. E%astic %imitc. Yie%" &oint". +ensi%e &oint

,. t is the #a%ue of stress on the stressDstrain cur#e at which the materia% has "eforme"

&%astica%%y that is; it wi%% no %onger return to its origina% size an" sha&e after remo#ing the

%oa".

a. 6ro&ortiona% %imitb. lastic liitc. Yie%" &oint". +ensi%e &oint

. t is the #a%ue of stress on the stressDstrain cur#e at which there is a significant increase

in strain with %itt%e or no increase in stress.a. 6ro&ortiona% %imit. E%astic %imitc. ield "oint". +ensi%e &oint

. t is the highest #a%ue of a&&arent stress on the stressDstrain cur#e.

a. 6ro&ortiona% %imit. E%astic %imitc. Yie%" &ointd. Tensile "oint

. t is a measure of the stiffness of a materia% "etermine" y the s%o&e of the straightD%ine

&ortion of the stressDstrain cur#e.a. Modulus o) elasticity. o"u%us of rigi"ityc. Strain

)siin

l'

in

l'

A

% 000#12000#12

25.2

000#27

22

====σ



". Stress10. A "ucti%e materia% is one that can e stretche"; forme"; or "rawn to a significant "egree

efore fracture. A meta% that e!hiits a &ercent e%ongation greater than IIII - is

consi"ere" to e "ucti%e.a. 2 . ' c. 4 d. *

11. A ritt%e materia% is one that fai%s su""en%y un"er %oa" with %itt%e or no &%astic "eformation.

A meta% that e!hiits a &ercent e%ongation IIII *.0- is consi"ere" to e ritt%e.

a. e3ua%

. Greater than

c. 6ess than

". t "e&en"s on the room tem&erature

12. +he ratio of shearing stress to shearing strain is ca%%e":

a. o"u%us of e%asticityb. Modulus o) rigidityc. o"u%us of e%ongation". o"u%us of stressii%ity

1'. t is the ai%ity of a materia% to asore" a&&%ie" energy without fai%urea. (ucti%ity . 9ritt%eness c. Har"ness d. Toughness

14. t is the in"ication of the resistance of a materia% to in"entation y a &enetrator.a. (ucti%ity . 9ritt%eness c. Hardness ". +oughness

1*. t is a measure of &u%%ing an" &ushing force

a. -$ial )orce. Shear forcec. +or3ue". 9en"ing moments .

1,. t is the measure of the tota% resistance to s%i"ing.a. A!ia% forceb. Shear )orcec. +or3ue". 9en"ing moments

1. t is the measure of the resistance to twisting.a. A!ia% force. Shear force

c. Tor(ue". 9en"ing moments

1. A common ar sus&en"e" from certain su&&ort has a!ia% %oa" of 1058. f the ar has across section of 20mm2; fin" the stress e!&erience y the ar.a. '*06a . 4206a c. 4*6a d. *++MPa

"am x

* 500

1020

000#1026 ==

−σ



1. Assume that a 2*Dmm "iameter ri#et Roins the &%ates that are each 12* mm wi"e. +he

a%%owa%e stresses are 1'0 6a for earing in the &%ate materia% an" ,* 6a for

shearing of the ri#et. (etermine the minimum thic5ness of each &%ate.a. 106a . 206a c. '06a d. 5+MPa

20. A cy%in"er &ressure #esse% is faricate" from &%ates which ha#e a thic5ness of 20mm.

+he "iameter of the &ressure #esse% is 4*0 mm an" its %ength is '.*m. (etermine the

ma!imum interna% &ressure which can e a&&%ie" if the stress in the stee% is %imite" to1*06a.a. 1*.''6a b. /./7MPa c. 1.*'6a ". 1.'6a

"a

mm

mm "a

t

+t

67.16

)25(2

)450(150

2

=

=

=

ρ

ρ

ρ σ

21. +he wa%% thic5ness of a 'ftD"iameter s&herica% tan5 is 4B1 in. Ca%cu%ate the a%%owa%e

interna% &ressure if the stress is %imite" to 000 &si.a. 1**.4&si . 1,.2*&si c. 7/.57"si ". 1.'&si

22. A stee% ar 40mm in "iameter an" 'm %ong is surroun"e" y a she%% of cast iron ,mm

thic5. Com&ute the %oa" that wi%% com&ress the comine" ar a tota% of 0.* mm in the

%ength of 2m. or stee% E'00G6a; an" for cast iron; E1*0G6a.a. 1*158 b. /k c. 1158 ". 1158

k* V

mm

V "

d V

91.31

)25(65

2

4

2

4

==

=

=

π

π

τ

mmt

" mm

kat

d

t

dt

'

'

82.9

130)25(

91.31

=

=

=

=

σ

σ

"a

mmmmmmmm

k*k*

A

89.39

]8258125[

91.31

=×−×

=

=

σ

σ

σ

$si47.176

)17/4(4

)124(9000

4

=

×=

=

)

in

in )

t

)+σ

k*

,mmmm,mm

A-

m m

A-

L

57.160

150])40()52[(300)40(

)3(1095.0

)2(108.0

22

4

2

4

3

3

=

−+=×

=×

=

−

−

π π

δ



2'. A stee% ro" '.*m %ong is secure" etween two wa%%s. f the %oa" on the ro" is zero at

'0LC; com&ute the stress when the tem&erature "ro&s to D'0LC. +he cross sectiona%

area of the ro" is 1200mm2; Z 11.umB@mLC; an" E200G6a.a. 1106a . 1206a c. 1'06a d. 5+MPa

A-

LT L

A-

L

T L

=∆

=

∆=

α

δ

α δ

24. A stee% shaft 'ft %ong that has a "iameter of *in is suRecte" to a tor3ue of 145i&Dft.

(etermine the ma!imum shearing stress. G12!10, &si.

a. +.57D . 0.*'L c. 0.,L ". 0.1L

°=°

== 47.0180

1012

)123)(12(146

32

)5( 4

π

θ π

x

x

xk

J,

TL

2*. $hat is the minimum "iameter of a so%i" stee% shaft that wi%% not twist through more than

4L in a ,m %ength when suRecte" to a tor3ue of 1'58Dm? $hat ma! shearing stress is

"e#e%o&e"? G* G6aa. +7./ . 11'.'mm c. 121.mm ". 12,.4mm

mmd x

k x

J,

TL

d

57.1071085

)6(13

180

49

32

)( 4

=

=°

°

=

π

π

θ

2,. (etermine the e%ongation in a he%ica% stee% s&ring com&ose" of 20 turns of 20Dmm

"iameter wire on a mean ra"ius of 0 mm when the s&ring is su&&orting a %oa" of 2.*58.

se G' G6a.a. 1,0mm . 1,*mm c. 10mm d. 7*

mmmm,a

mmk 175

)20(83

)20()90)(5.2(644

3

==δ

2. A ho%e is to e &unche" out of &%ate ha#ing a shearing strength of 40 5si. +he

com&ressi#e stress in the &unch is %imite" to *0 5si. Com&ute the ma!imum thic5ness of

&%ate from which a ho%e 2.* inches in "iameter can e &unche"a. 0.*00 in b. +.78 in c. 0.102 in ". 0.204 in

t 2.*@*0 B 4@40 0.1 inches

2. A ho%e is to e &unche" out of &%ate ha#ing a shearing strength of 40 5si. +he

com&ressi#e stress in the &unch is %imite" to *0 5si. f the &%ate is 0.2* inches thic5;

"etermine the "iameter of the sma%%est ho%e that can e &unche".a. +.8++ in . 0.1 in c. 0.4'* in ". 0.,00 in

"a

,T-

- T

4.140

)200)(3030)(7.11(

=+=∆=

=∆

σ

µ α σ

σ α



( [email protected]*@40 B *0 0.00 inches

2. A %arge &i&e; ca%%e" a &enstoc5 in hy"rau%ic wor5; is 1.* m in "iameter. t is com&ose" of

woo"en sta#es oun" together y stee% hoo&s; each '00 s3. i%%imetre in crossDsectiona%

area; an" is use" to con"uct water from a reser#oir to &ower a house. f the ma!imum

tensi%e stress &ermitte" in the hoo&s is 1'0 6a; what is the ma!imum s&acing etween

hoo&s un"er a hea" of water of '0 m?a. 1.mm . .1 mm c. 77 ". 1. mm

@[email protected]@'0@1.*7 2@'00!10[D,@1'0!10[,

7 1 mm

'0. At what angu%ar #e%ocity wi%% the stress in a rotating stee% ring e3ua% to 1*0 6a if its

mean ra"ius is 220 mm? +he "ensity of the stee% is .* gBm['.a. 1. ra"Bs . 1* ra"Bs c. 1'.2 ra"Bs d. /8 rad0s

\ @1B0.22@1*0!10[, B *0[@1B2 ,2 ra"Bs

'1. A &i&e carry steam at '.* 6a has an outsi"e "iameter of 4*0 mm an" a wa%% thic5ness

of 10 mm. A gas5et is inserte" etween the f%ange at one en" of the &i&e an" a f%at &%ate

use to ca& the en". How many 40DmmD"iameter o%ts must e use" to ho%" the ca& on if

the a%%owa%e stress in the o%ts is 0 6a; of which ** 6a is the initia% stress?a. 14 . 1* c. 1, d. 7

8 @'.*!10[,@0.4* O 2!0.01[2 B ]@0.04[2@O**!10[,^ 1,.1 roun" u&

8 1

'2. A &i&e carry steam at '.* 6a has an outsi"e "iameter of 4*0 mm an" a wa%% thic5nessof 10 mm. A gas5et is inserte" etween the f%ange at one en" of the &i&e an" a f%at &%ate

use to ca& the en". $hat circumferentia% stress is "e#e%o&e" in the &i&e?a. 7*.3 MPa . '.,* 6a c. .* 6a ". '.' 6a

U @'.*@4*0 O 2!10 B ]2@10^ *.' 6a

''. t is the ma!imum safe stress that a materia% can carrya. working stress . %timate stress c. ru&ture strength ". Yie%" strength

'4. t is the &oint at which there is an a&&recia%e e%ongation of the materia% without any

corres&on"ing increase of %oa".

a. E%astic %imit b. ield "oint c. %timate stress ". 6oint of ru&ture

'*. +his com&onent measures the &u%%ing @or &ushing action &er&en"icu%ar to the sectiona. +or3ue . 9en"ing moment c. -$ial )orces ". Shearing force

',. A stee% ro" ha#ing a crossDsectiona% area of '00 s3. eters an" a %ength of 1*0 m is

sus&en"e" #ertica%%y from one en". t su&&orts a tensi%e %oa" of 20 58 at the %ower en". f



the unit mass of stee% is *0 5gBm[' an" E 200!10[' 8Bm[2; fin" the tota%

e%ongation of the ro".a. *5.3 . 40 mm c. 4'.' mm ". '* mm

_ ]@*0@.@1*0[2 B 2@200`10[^ F ]@20000@1*0@1000[2 B '00@200`10[^

_ *4.' mm

'. $hat is the theoretica% ma!imum #a%ue of 6oisson<s ratio of any gi#en materia% suRecte"

to a uniform tria!ia% stress.a. 0 . 1 c. 1B' d. 0

'. A stee% ar *0 mm in "iameter an" 2 m %ong is surroun"e" y a she%% of cast iron * mm

thic5. Com&ute the %oa" that wi%% com&ress the comine" ar a tota% of 0. mm in the

%ength of 2m. or stee% E 200 G6a; an" for cast iron E 100 G6aa. 21 58 . 240 58 c. 4 k ". 420 58

6 ]@[email protected]*[2@200!10[@0.000B2^ F

]@[email protected],[2 D0.0*[2@100!10[@0.000B2^

6 12 58

'. A so%i" stee% shaft * m %ong is stresse" to 0 6a when twiste" through 4 "egrees.

sing G ' G6a; com&ute the shaft "iameter.a. 104 mm b. 38 c. 14 mm ". 1,0 mm

r @0@* B ]@4@B10@'000^ , mm

" 2@, 1' mm

40. A so%i" stee% shaft is not to twist through more than ' "egrees in a , m %ength when

suRecte" to a tor3ue of 12 58.m. $hat ma!imum shearing stress is "e#e%o&e"? se

G'G6a.a. 5.3 MPa . 4'.4 6a c. '4.' 6a ". 1., 6a

@B4"[4 @12000@, B ]@'@B10@'!10[^

" 114 mm

b 1,@12000 B ]@.114['^

b 41.' 6a

41. $hat is the minimum "iameter of a so%i" stee% shaft that wi%% not twist through more than

' "egrees in a , m %ength when suRecte" to a tor3ue of 12 58.m? se G'G6a.a. 5 . 11, mm c. 11 mm ". 120 mm

@B4"[4 @12000@, B ]@'@B10@'!10[^

" 114 mm



42. A stee% ro" 2.* m %ong is secure" etween two wa%%s. f the %oa" on the ro" is zero at 20

"egree Ce%sius; com&ute the stress when the tem&erature "ro&s to D20 "egrees Ce%sius.

+he crossDsectiona% are if the ro" is 1200 s3. mm; coefficient of %inear e!&ansion 11.

umB@mD"eg.C; an" E 200 G6a. Assume that the wa%%s are rigi".a. ,.' 6a . ,.' 6a c. 43./ MPa ". ,.' 6a

U @200!10[@11.!10[D,@20 D D20 '.,!10[, 6a

U '., 6a

4'. (etermine the ma!imum shearing stress in a he%ica% stee% s&ring com&ose" of 20 turns

of 20 mmD"iamter wire on a mean ra"ius of 0 mm when tha s&ring is su&&orting a %oa"

of 2 58. se G ' G6a.a. 110., 6a . 112.' 6a c. +./ MPa ". 1'4., 6a

m 0B10

b ]1,@[email protected] B @0.02['^!]4@D1^B]4@D4^ F @0.,1*Bd

b 120., 6a

44. (etermine the e%ongation in a he%ica% stee% s&ring com&ose" of 20 turns of 20 mmD

"iamter wire on a mean ra"ius of 0 mm when tha s&ring is su&&orting a %oa" of 2 58.

se G ' G6a.a. . mm . . mm c. 48.7 ". . mm

_ ,4@[email protected]['@20 B ]@'!10[@0.02[4^

_ . mm

4*. +hese are com&onents of the tota% resistance to s%i"ing the &ortion to one si"e of the

e!&%oratory section &ast the other.a. +or3ue . 9en"ing moment c. A!ia% forces d. Shear )orces

4,. $ho first &ostu%ate" that stress is &ro&ortiona% to strain in 1,?a. +homas Young b. 2obert Hooke c. An"rew 6yte% ". Char%es Augustus

GEAS: Engineering Economy1. An in#estor has an o&tion to &urchase a tract of %an" that wi%% e worth 620;000 in

se#en years. f the #a%ue of the %an" increases at - each year; how much shou%"

the in#estor e wi%%ing to &ay now for this &ro&erty?a. 6;'41 b. P+E45 c. 611;*21 ". 612;01*

10#940.68=&#9%#7)20#000(/=

n)i%#&(/&#=

1

1n

i %

+=



2. Su&&ose that you ma5e 12 e3ua% annua% "e&osits of 62;000 each into a an5

account &aying - interest &er year. +he first "e&osit wi%% e ma"e one year from

to"ay. How much money can e with"rawn from this an5 account imme"iate%y after

the 12th "e&osit?a. 6'*;42 . 6',;21 c. 37E4*5 ". 6';**

'. $hat is the effecti#e rate of interest if 61000 is in#este" at a nomina% rate of 1*-

com&oun"e" 3uarter%y?a. *.8/% . 1,.,- c. 1.,- ". 1.,-

4. A man &urchase" a house for 642*;000. n the first month that he owne" the house;

he s&ent 6*;000 on re&airs an" remo"e%ing. mme"iate%y after the house was

remo"e%e"; he was offere" 6*4*;000 to se%% the house. After some consi"eration; he

"eci"e" to 5ee& the house an" ha#e it rente" for 64;*00 &er month starting two

months after the &urchase. He co%%ecte" rent for 1* months an" then so%" the house

for 6,00;000. if the interest rate was 1.*- &er month; how much e!tra money "i" he

ma5e or %ose y not se%%ing the house imme"iate%y after it was remo"e%e"?a. 6';000 .64;000 c. P*E+++ ". 6,;000

*. )n the "ay his gran"son was orn; a man "e&osite" to a trust com&any a sufficient

amount of money so that the oy cou%" recei#e fi#e annua% &ayments of 620;000

each for his co%%ege tuition fees; starting with his 1th irth"ay. nterest at the rate of

12 &er annum was to e &ai" on a%% amounts on "e&osit. +here was a%so a &ro#ision

that the gran"son cou%" e%ect to with"raw no annua% &ayments an" recei#e a sing%e

%um& amount on his 2*th irth"ay. +he gran"son chose this o&tion. How much "i" the

gran"father "e&osit?a. 6;*00 b. P+E*++ c. 611;*00 ". 612;*00

,. A man ought an e3ui&ment costing 6'0;000 &aya%e in 12 3uarter%y &ayments;

each insta%%ment &aya%e at the eginning of each &erio". +he rate of interest is 24-

com&oun"e" 3uarter%y. $hat is the amount of each &aymenta. 61;00 . 62;00 c. P3E7++ ". 64;00

37#954.258%#12)2000(&/'#=

i

1)1(

=

−+=

ni A %

%86.1514

15.01

4

=−

+=

eff i

5#015= )15%#5.1#/(000#600)15%#5.1#/(500#4000#545 % A Ans −−=

500#10=

)17%#12#/)(5%#12#/(000#20

% A =

96.685#3

)112%#8#/1(000#30

A

A A

=

−+=



. A te%ecommunication com&any &urchase" an e3ui&ment for 6*';000 an" &ai"

61;*00 for freight an" "e%i#ery charges to the Ro site. +he e3ui&ment has a norma%

%ife of 10 years with a tra"eDin #a%ue of 6*;000 against the &urchase of a new

e3ui&ment at the en" of the %ife. (etermine the annua% "e&reciation cost y thesin5ing fun" metho". Assume interest at ,.*- com&oun"e" annua%%y.a. 62;*4' b. P3.E//8 c. 64;21* ". 6*;*,

. A &%ant ought a machine for 6200;000 an" use" it for 10 years; the %ife s&an of the

e3ui&ment. $hat is the oo5 #a%ue of the machine after * years of use? Assume a

scra& #a%ue of 620;000. se "ou%e "ec%ining a%ance metho".a. 64';,4 . 6*;42* c. P/*E*3/ ". 60;2'

GEAS: Engineering anagement1. t is a metho" of managing a%% the acti#ities that affect the 3ua%ity of goo"s or ser#ices in

or"er to &re#ent fau%ts.a. 9uality -ssurance . Nua%ity Circ%ec. Nua%ity Contro% ". Nua%ity Stan"ar"

2. +his ty&e of usiness organization can e set u& without any forma%ity. t e!ist when

there are a numer of &eo&%e in#o%#e" who are &art owners of the usiness.a. Association . Cor&orationc. Partnershi" ". So%e 6ro&rietorshi&

'. tems &urchase" from a #en"or cost 6h& 20 each; an" the forecast for ne!t year<s

"eman" is 1;000 units. f it costs 6h& * e#ery time an or"er is &%ace" for more units an"

the storage cost is 6h& 4 &er unit &er year; what 3uantity shou%" e or"er each time?a. 20 . '0 c. 40 d. *+

N √@2(SBH √@@2@1000@*B4 *0 units$here( (eman"S )r"ering costH Storage costBho%"ing cost

4. +his &rocess can e use" to measure achie#ement in +ota% Nua%ity anagement @+N

system. A%so it &ro#i"es the essentia% contro% an" measure fee"ac5 %oo& necessary for

3ua%ity im&ro#ementa. ;encharking . Continuous m&ro#ementc. Nua%ity chain ". Nua%ity circ%e

668#310%#5.6#/

000#5500#54

000#5

500#54500#1000#53

A %

d

C

C

L

#

=−=

==+=

536#65)1(00#200 5

102

5 C =−=



*. t is the &rocess of attracting &otentia% em&%oyees to the com&any so that the se%ection

&rocess can e carrie" out.

a. A"#ertising . 9enchmar5ing

c. Se%ection d. 2ecruiteent

,. +wo &ro"ucts; ` an" Y; oth re3uire &rocessing time on machines an" . achine has

200 hours a#ai%a%e; an" machine has 400 hours a#ai%a%e. 6ro"uct ` re3uires one

hour on machine an" four hours on machine . 6ro"uct Y re3uires one hour on

machine an" one hour on machine . Each unit of &ro"uct ` yie%"s 6h6 10 &rofit an"

each units of Y yie%"s 6h6 * &rofit. $hat is the 7inear 6rogramming o"e% for this

&ro%em.a. a! 6rofit 6h6 *` F 6h6 *Y

SuRect to: ` F Y 200

` F Y 400` ; Y 0b. Ma$ Pro)it G PhP + IPhP *

SubJect toK I L ++5 I L 5++ E +

c. a! 6rofit 6h6 *` F 6h6 10YSuRect to: ` F Y 200

4` F Y 400` ; Y 0

". a! 6rofit 6h6 10` F 6h6 *YSuRect to: ` F Y 200

` F Y 400` ; Y 0

7et ` numer of units of &ro"uct ` to e &ro"uce".

Y numer of units of &ro"uct Y to e &ro"uce".

a! 6rofit 6h6 10` F6h6 *YSuRect to: ` F Y 200 Ca&acity of achine

4` F Y 400 Ca&acity of achine ` ; Y 0 8onnegati#ity Constraints

. A &roRect has een "efine" to contain the fo%%owing %ist of acti#ities; a%ong with their

re3uire" times for com&%etion

Acti#ity +ime @"ays mme"iate 6re"ecessors A * D9 , DC ' A



( AE 2 9;C 11 9;CG 1 (H 12 E;(

$hat is the com&%etion time of the who%e &roRect?a. 1 "ays . 22"ays c. * days ". ' "ays

. Here are the month%y "ata for the &ast months. rom these "ata; what are the

forecasts for the fo%%owing 4 months using %inear regression?

6erio" Actua%1 '002 *40

' *4 *0* 41,, ,0 111 ,0

a. th2*; 10thD 10.''; 11th O *.,,; 12th O 1;01b. thDD00; 10thD ,; 11th D 10'4; 12th O 1;101

1

2

3

4

5 6

!

'

(

)

&

*

+

1

8

5

6

3,

2

11

12

0

0

5

5

13

13

13

13

8

11



c. 4thBB447E +thB +/7./7E th > 38.33E th > +4d. thDD102; 10thD 1;104; 11th O 1;11; 12th O 1;2*

y a F !$herey the "e&en"ent #aria%e

a the interce&t the s%o&e of the %ine! the in"e&en"ent #aria%e

- ./0a = ∑

∑−

−=

22 xn x

y xn xy'

a ',1 0., e3uation : y ',1 F 0.,!

. t is the name gi#en to any acti#ity un"erta5en y the organization with the e!&ress

&ur&ose of gaining information aout &otentia% customer a. ar5et Ana%ysis . ar5et nte%%igencec. Market 2esearch ". ar5et System

10. t is use" when &ro"uct are ma"e sing%y or in sma%% atches. t ha&&ens when a sma%%

numer of &ro"ucts are &rocesse" at each storage efore going on to the ne!t stage.a. 9atch 6ro"uction . %ow 6ro"uctionc. @ob Production ". 6ro"uction (esign

11. t in#o%#es a #o%untary association of &eo&%e; ca%%e" memers; who o&erate an enter&rise

co%%ecti#e%y. +he aim of this organization is not to ma5e &rofit ut to gi#e su&&ort to their

memers.a. Association b. 'oo"erativesc. 6ri#ate Com&anies ". 6u%ic Com&anies

12. t is the rationa% way to ensure that our %imite" time is a%ways use" effecti#e%y.a. anagement Commitment . anagement >es&onsii%ityc. Tie Manageent ". +ime Conf%ict

GEAS: 7aws; Contracts an" Ethics

1. (ate of a&&ro#a% of >A 22a. A&ri% 14; 2004 . A&ri% 14; 200 c. -"ril 7E ++5 ". 8one of these

2. +here are IIIIIIIIII Artic%es an" IIIIIIIIII sections in the >A 22.a. ;42 b. 8E 53 c. ; 4' ". ;42

'. Any &erson who sha%% #io%ate any &ro#ision of >A 22 or any ru%es; regu%ations; theCo"e of Ethics an" the Co"e of +echnica% Stan"ar"s of 6ractice is state" in section

IIIIIIIII.

a. 3* . ', c. ' ". '

4. +his act is was conso%i"ation of House 9i%% 8o. *224 an" Senate 9i%% 8o. 2,'.a. 2- 44 . >A *'4 c. >A ,*41 ". 8one of these



*. +he chair&erson of the 6>C sha%% inc%u"e in the Commission<s &rogram the

im&%ementation of >A 22; the fun"ing of wBc sha%% e inc%u"e" in the Annua% Genera%

A&&ro&riation Act.a. Sec ' b. Sec 5+ c. Sec 41 ". Sec 42

,. Accor"ing to section 4'; >A 22 sha%% ta5e effect IIIIIIIIII fo%%owing its fu%%

&u%ication in the IIIIIIIIII or any news&a&er of genera% circu%ation.a. 1* "ays; 7aw Gazetteb. * daysE #))icial aNette c. 1* "ays; internet". '0 "ays; internet

. $ho among the fo%%owing &ersons was not a signatory of the 22?a. >A878 (>7)8. P)SE (E =E8ECA P>c. )SCA> G. YA9ESd. @S!S P. -C-2#

. Section 40 of >A 22.a. -""ro"riations . >e&ea%ing c%ause c. Effecti#ity ". Se&arai%ity c%ause

. $hich of the fo%%owing is not true for the 3ua%ifications of 9oar" emers of E%ectronics

Engineering?a. ;e a citiNen and a resident o) the Phili""ines )or * consecutive yrs "rior to his

a""ointent. emer of goo" stan"ing of the A6)c. ust not ha#e een con#icte" of an offense in#o%#ing mora% tur&itu"e". 9e of goo" mora% character an" integrity

10. A%% recor"s of the 9oar"; inc%u"ing a&&%ications for the e!amination; a"ministrati#e cases

in#o%#ing 6ECE; ECE an" EC+s sha%% e 5e&t ya. 9ECE . ECE6 c. P2' ". A6)

11. +he memers of the 9oar" sha%% ho%" office for a term of IIIIIIIIII from "ate of

a&&ointment or unti% their successors sha%% ha#e een a&&ointe" an" 3ua%ifie" an" may

e reDa&&ointe" once for another term.a. two years . at %east ' years c. 3 years ". * years

12. Section states that the 9oar" is #este" with the authority to: A"o&t an officia%

IIIIIIIIII of the 9oar".

a. %ogo . icon c. A#atar d. Seal

1'. +he com&ensation an" a%%owances of the 9oar" is com&ara%e to that eing recei#e" y

the Chairman an" memers of e!isting regu%atory oar"s un"er the Commission as

&ro#i"e" for in the IIIIIIIIII.a. Ci#i% Ser#ice. (e&t of 9u"get ngt

c. >A 12



d. en -""ro"riations -ct

14. Each memer of the 9oar" sha%% ta5e theBa IIIIIIIIII &rior to the assum&tion of

office.

a. &ane% inter#iew from the A&&ointment committee. oar" e!amc. "ro"er oath

". none of these

1*. How much or what fine is re3uire" for any &erson who sha%% #io%ate any &ro#ision or any

ru%es; regu%ations; the Co"e of Ethics an" the Co"e of +echnica% Stan"ar"s of 6ractice

&romu%gate" un"er >A 22?a. 8ot %ess than 6h&100;000.00 nor more than 6h& 1 or y im&risonment of not %ess

than , months nor more than , year. 6h&100;000.00 to 6h& 1 or , yrs im&risonment or oth; in the "iscretion of the court

c. ot less than Ph"++E+++.++ nor ore than Ph" M or by i"risonent o) not

less than / onths nor ore than / yearsE or bothE in the discretion o) the court

". none of these

1,. +he 9oar" an" the IIIIIIIIII sha%% correct an" rate the %icensure e!amination &a&ersa. 'oission . A6) c. ECE6 ". none of these

1. Accor"ing to section 2DStatement of 6o%icy; the state sha%% therefore "e#e%o& an" nurture

com&etent; #irtuous; &ro"ucti#e; an" IIIIIIIIII 6ECE; ECE; an" EC+sa. Go"Dfearing . re%igious c. #ersati%e d. wellBrounded

1. A can"i"ate for E%ectronics Engineer or E%ectronics +echnician who otains a &assing

rating in the maRority of the suRects ut otains a rating in the other suRectBs e%ow

IIIIIIIII &ercent ut not %ower than IIIIIIIIII &ercent; sha%% e a%%owe" to ta5e one

remo#a% e!aminations on the suRectBs where heBshe fai%e" to otain the &assing rating.a. 0; *0 b. 7+E /+ c. *0; 0 ". ,0; 0

1. $ithin IIIIIIIIII years after the effecti#ity of >A 22; the 9oar" sha%% issue

Certificate of >egistration an" 6rofessiona% "entification Car"s without e!amination to

a%% a&&%icants for registration as E%ectronics +echnicians who com&%y to a%% the

re3uirements state" in section 20.a. ' @three b. * O)ive c. @se#en ". none of these

20. $ith reference to &ro 22; a%% sumitta%sB"ocuments sha%% e accom&anie" y a

certification from IIIIIIIIII registere" 6ECEs #ouching for the integrity; technica%

ca&ai%ity an" goo" mora% character of the a&&%icant.a. at least 3 . ' c. * ". none of these

21. As &ro#i"e" in AC+ '4,; the construction of a ra"io station sha%% egin on%y when a. A &ersonne% of 8+C has con#eye" through te%e&hone that the a&&%ication has a%rea"y

een a&&ro#e".. the firm a&&%ying for the construction &ermit has sumitte" to the 8+C its a&&%ication

for the same.



c. the technica% "ocuments has a%rea"y een signe" an" sea%e" y the 6ECE.

d. The T' has already issued a Perit to construct.

22. As &ro#i"e" in >A2*; a =AS &ro#i"er nee"s to secure a franchise if a. it is offere" y a te%ecommunications entity whose &rocee"s of uti%ity o&erations are

not crossDsusi"ize".. it "oes not "iscriminate other ser#ice &ro#i"ers against rates.c. it is offere" y a te%ecommunications entity that uses a se&arate oo5 of accounts for

=AS.d. it "uts u" its own network.

2'. Accor"ing to the co"e of ethics; if you are em&%oye" in a com&any an" you wish to

engage in a usiness which may com&ete with your com&any; the most ethica% thing to

"o is toa. in)or your e"loyer about it. ha#e someo"y run the usiness instea" of youc. try to fin" new c%ients

". 5ee& your &rices %ower than your com&any<s

geas reviewer

Documents