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FEB-2012 PAPER 2

IIAT-CHENNAI

1. fires in flammable petroleum products or other flammable or combustibleliquids, greases, solvents, paints, etc is classified asa. class A fireb. class B firec. class C fire

2. Heat treatment of aluminum consists ofa. Solution heat treatmentb. Precipitation Heat Treatment

c. Annealingd. All of the above

. !f distance of cg from datum is 1"#$ and of leading edge of %AC is 1$ andlength of %AC is 1##$. 'ind %AC (a. 20%b. )#(c. *)(

&. !f the input of half +ave rectifier is 2 and transformer has a step do+n ratioof -1, +hat is the output rms value/a. &2.2

b. #

). 0emultipleer isa. utput is same as multipleerb. utput is opposite of multipleerc. As in b CC3 regulates in input and output

". 4hich of them is a ) la5er devicea. 0iacb. Triac

*. Convert octal code )*& to binar5

a. 011 101 111 100b. 1## 111 1#1 #11c. 111 1#1 #11 111

8. A metal +hich can be hammered, rolled, or pressed into various shapes+ithout crac6ing, brea6ing, or leaving some other detrimental effect, is said to bea. Malleableb. 0uctilit5

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7. %TCS regarding 8Austenite$ isa. The name given to steel +hen it is heated above the critical range, consists ofa solid solution of cementite in gamma iron.

1#. 0ata transfer in a9C is b5a. Series bus

b. Parallel busc. 0ata busd. A:!;C &27 bus

11. Speed of induction motor is increased +hena. ;umber of poles is increasedb. Nuber of !oles is reducedc.d. All of the above

12. %TCSa. turboprop engine requires length5 run+a5 than piston engine of same po+er

b. turbo

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18. 4e can get vastl5 superior product than iron !f carbon is added to iron, inpercentages ranging up toa. Approimatel5 #.) percent.b. A!!ro(iatel 1 !erce"t.c. !f ;ic6el .)#(, chromium 1.))( is present

17. 4hich resistor has the smallest possible si@ea. 4ire +ound resistorb. Carbon composition resistorc. *urface ou"t resister

2#. 4hile selecting a capacitor chec6 fora. oltageb. Si@ec. t5ped. Ho$ uch volta)e it ca" $ithsta"d

21. %etal tubings are si@ed b5

a. !nside diameter in increment of 191" inchb. !nside diameter in increment of 192 inchc. +utside diaeter i" i"cree"t of 1,1 i"chd. utside diameter in increment of 192 inch

22. Stringers, bul6head, s6in, rivet and etruded section are made froma. Cast aluminum allo5b. rou)ht alui"u alloc. Pure aluminum

2. T+o input bubbled A;0 gate isa. : gateb. A;0 gatec. ;A;0 gated. N+/ )ate

2&. Slots provided on the armature are not parallel but are staggered at an angle toprovidea. Safet5b. /educe the hui") "oisec. Stabilit5.d. ..

2). !n 1-B- steel 1-( is composed ofa. ;ic6elb. chroiuc. ..d. ..

2". ParcoB lubri@ing is a chemical treatment applicable toa. Aluminum and magnesium partsb. Iro" a"d steel !arts

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c. ..2*. 0amaged rivets can be removed b5a. rive !u"chb. Pric6 punchc. Hollo+ punchd. oth a and b

2-. alue of induced emf depends upona. ;umber of +ires moving through magnetic fieldb. Strength of magnetic fieldc. Speed of rotationd. All of the above

29. !f the pea6 value is 1## volts then at an angle of #D +hat is the instantaneousvaluea. 0 b. 1## c. 1)#

d. 2##

30 re"ches are ade of

aE Carbon steel bE Tungsten c4 Chroe va"adiu steel

31 The t!e of tor#ue $re"ch $hich has the abilit to !reset the tor#ue

aE 0eflecting beam bE rigid frame c4 icroeter setti") t!e

32 5ire e(ti")uisher !eriodic chec6list i"clude

a) remove all eternal dirt and dust

bE chec6 for proper +eight

c) no no@@le obstruction

d) all of the above

33 The dra) $hich is co"tributed b the lift

a4 i"duced dra)

bE parasite dragcE profile drag

37 I" strai)ht a"d level fli)ht

aE lift equals drag and drag is the resistance of the air to ob

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bE thrust equals +eight and thrust is derived from

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72 $hich bolt is used o"l i" te"sio" "ever i" te"sio"

a4 Clevis bE e5e bolt

73 A thread ru""i") le")th of the fabric

a) ar! bE+eft

77 Cable MTC*

a4 5re#ue"t ad&uste"t of the cable te"sio"

bE Fo+ mechanical efficienc5

cE High strong and high +eight

dE all7 $hat is a" alter"ator

a) Ac curre"t )e"erator bE dc generator cEac motor

7 I" lar)e a,c dc su!!l coes fro

a) batter5 onl5

b4 b4 batter =T/>

cE cE batter5 and generator

79 C/T C+'+>/

1. /ed? )ree"? blue

2. =ello+, red ,green

7: EICA*

1. E")i"e i"dicati") a"d cre$ alerti") sste

7

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0 ;o"e "ubers o" aircraft blue !ri"ts are usedto

1. 'ocate !arts? sectio"s a"d vie$s o" lar)e dra$i")

2. !ndicate different section of aircraft

. Focate parts in aircraft

1 hich t!e crac6 ca" be detected b M!I usi") either circular or

lo")itudi"al ethod@

1. 70

2. Fongitudinal

. Transever

2 hat Al-allo desi)"atio" i"dicate that the etal has received "o

harde"i") or te!eri") treate"t

1. 3003-5

2. )#)2BH"

. "#"1B#

3 hat tas6s are co!leted !rior to $ei)hi") a" a,c to deteri"e its

e!t $t@

1. :emove all items ecept those on a9c equipment list, drain fuel and

h5draulic fluid2. :emove all items on a9c equipment list, drain fuel, compute oil andh5draulic fluid lot3. /eove all ites e(ce!t those o" a,c e#ui!e"t list? drai" fuela"d fill hdraulic reservoir7 ;ero fuel $t. is

aE 0r5 +t. plus the +t. of full cre+, passengers and cargo basic operating +t.+ithout cre+, fuel and cargob4 Ma(iu !erissible $t. of a loaded a,c !asse")ers? cre$ a"dcar)o4 $ithout fuel

The core aterial of alclad 2027 T7 is

a) Heat treated Al. allo i"ter"all a"d the surface aterial iscoerciall !ure Al.bE Commerciall5 pure Al. and the surface material is head treated Al. allo5 Stain hardened Al. allo5 and the surface is pure Al

hich "uber re!rese"ts the ver"ier scale uraduatio" of a ,

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1. .####1

2. .##1

. .0001

9 hich too is )e"erall used to calibrate a . or chec6 itsaccurac

1. au)e bloc6

2. 0T!

. %achinist scale

: irchof curre"t la$ a!!licable o"l for

1. Closed loop 2.Du"ctio" "et$or6 . pen c6t

< 5retti") corrosio" is ostl li6el to occur

1. he" t$o surfaces fit ti)htl to)ether but ca" ove relative to o"ea"other

2. 4hen t+o distance metals are in contact

. 4hen t+o surfaces fit loosel5 together but can move relative to one another

0 *!illed ercur o" alui"iu

1. >r)e"tl i"creases susce!tibilit to hdro)e" ibrutee"t2. %a5 cause impaired corrosion resistance if left in proposed contact

. Causes rapid end severe corrosion that is ver5 difficult to control d4all

1 irectio" of si")le !hase otor ca" be reversed b

1. 3sing reversible s+itch

2. Changing the connection of both +inding

. Cha")i") the co""ectio" of stati") $i"di")

2 5lu( is used for

1. :educe oidation

2. :emove the oides

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7. All

3 + ri") color code i"dicates

1. Si@e

2. Shape

. a!our a"d fluid co!atibilit5

7. hich cable has hi)h resista"ce to fati)ue@

1. >alvani@ed

2. Stainless steel

. Carbon steel

") 4hich bra@ing method is used for precious b5 locali@ed parts1. !nduction

2. Torch bra@ing

E /esista"ce braFi")

&. 'urnace bra@ing

he" all others !araeters are reai"s u"cha")ed

1. 'ess the as!ect ratio? ore the i"duce dra)

2. %ore the aspect ratio less the induce drag

. Higher the angle of attac6, higher the induce drag

&. Higher the angle of attac6, less the induce drag

9 I" ortho)ra!hic !ro&ectio"

1. Gight vei+s are common

2. T+o vines are common

. +"e vie$? t$o vie$ a"d three vie$s are coo"

: the ai" !ur!ose of usi") core i" tra"sforers to

1. :educe reactance

2. :educe copper loss

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3. decrease the relucta"ce of coo" a)etic circuit

&. :educe iron loss

< Te!eri") is used for

1. :educe hardness and ductilit5

2. 2. !ncreases hardness and ductilit5 .

3. /educes hard"ess a"d brittle"ess

*# 8oi"t i" atos!here at $hich te! reai" co"te"t

1. Stratosphere

2. Tro!o!ause. Troposphere

&. !onosphere

91 Co"vert 129 octal to bi"ar for

a4 111111142

92 :0: icro!rocessor

a4 irect re)ister

93 :0: icro!rocessor

97 aterials such as a)"esiu a"d eure6a $he" te!erature i"creases

its resiste"ce

aE !ts resistance increases linearl5 +ith temperature

bE !ts resistance decreases +ith temperature

cE !ncreases

d4 5airl co"sta"t over co"siderable ra")e of te!erature

94 I" star co""ectio"

!F I!PbE FP c4 I'GI8 0E.

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94 e"eral !ur!ose solders

a4Ti"? lead a"d a"tio" bE Tine ,lead and silver

99 uri") refueli") a,c

aE Place cho6es

b4 ee! the choc6 little for$ard

cE Jeep the choc6e on main landing gear

dE ;ever 6eep choc6e and par6ing brea6 should be on

9: sta"dard atos!heric co"ditio"s

aE

b4 2

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cE ;on magnetic and an ecellent conductor

d4 A+TA

:2bolt $ith asteris6 si)" o" its head

a4sta"dard steel bolt

:3ATA cha!ter -1

a4structure

: ari"c 72< se"ds data i"

AE C0

bE inar5

c4 A" o"e of the la")ua)e above

: $hich is "ot associated $ith dischar)e of 'A batter

A4 *.) i"creases

bE oltage decreases

cE oth

:94 hat ha!!e" $he" 'A batter te! i"creases@

::4 Mar6 the $ro") statee"t re)ardi") !arallel resistor c6t

A4 iffere"t resistor has their i"dividual volta)e dro!

E 0ifferent resistor has their individual current drop

cE Po+er is additive

:< $he" curre"t flo$" b,$ t$o co"ductor i" sae directio"

aE 'ield strength decreases and it attract each other

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