These materials are hard and brittle, insulative to electricity and heat, and

very resistant to high tempertatures and harsh environments

ceramics

These materials have a large number of non-localized electrons, as an effect are very good conductors of electricity and heat. They are strong yet deformable,

and extensively used in structural applications

metals

What is the most common defects in crystals

line defects

Among the elements in the periodic table, Which group of elements are the

most electronegativehalogens

In the periodic table, the elements are arranged in vertical columns called

groups and numbered in roman numerals. These elements are called

congeners

Topaz. Quartz. Talc. Corondum. In the Moh's scale, which of the following is

the hardest mineralcorondum

Oldest engineering materials known for its good malleability property

copper

Materials composed of more than one material type and are designed to display a combination of the best characteristics

of each component material

composites

An elemental solid having a different crystal structure, usually due to the

allotrope

prevailing temperature and pressure

What do you call those forces which hold molecules together in crystals

Van der Waal forces

This metal is alloyed with steel to give it corrosion resistance properties, resulting

in stainless steelchromium

In order to prevent corrosion of metals in galvanized iron, what element is added

to steelzinc

This element is used in modern, super strong permanent magnets because of

their high coercivitiesneodymium

A kind of solid which is characterized as consisting of ordered three-dimensional arrays of structure motif is classified as

__ solids

crystalline

The heat treatment done in materials that improve its strength and machinability hardens the material resulting in loss of

ductility is known as

normalizing

It is a form of alpha-beta brass with about 60% copper, 40% zinc and a trace

of iron that is altered as an alloymuntz

A notation system in crystallography for planes and directions in crystal (Bravais)

latticesmiller index

A crystal imperfection involving a vacancy of pairs of ions of opposite

schottky imperfections

charges

The deterioration of an engineered material due to interaction with diverse

environments which lead to the degradation of its material properties

corrosion

It is the point at which there is an appreciable elongation of the material

without any corresponding increases of load

yield point

This component measures the pulling or pushing action perpendicular to the

sectionaxial forces

In engineering materials, in order to improve the ductility of nickel, __ is

neededmanganese

The ratio of the elastic modulus of the material to the density of the material is

the __ modulusspecific

The type of bond that occurs as a result of the formation of an electric dipole within certain atoms or molecules is

called

secondary bond

What crystalline structure has a coordination number of 12

face-centered cubic

What crystalline structure has a packing factor of 0.52

simple cubic

What is the atomic packing factor for FCC closed packed crystal structure

0.74

It is the interchange of an atom from a normal lattice position to an adjacent

vacant latticevacant diffusion

What gives the average ratio of stress to strain of the material operating in the non-linear region of the stress-strain

diagram

secant modulus

What is the theoretical maximum value of the Poission's ratio of any given

material subjected to a uniform triaxial stress

1/2

Ordinary steel heated at high temperature of 1130 C that has 1.7

carbon as one of its constituentaustenite

Group of dielectric materials that exhibits spontaneous polarization in the

absence of an electric fieldferroelectric

What is the ferroelectric Curie temperature of Barium Titanate

120 Celsius

A type of steel that contains more than 0.83% carbon

hypereutectoid steel

Stainless steels are iron-based alloys containing at least 12% __

chromium

Aluminum is how many percent by weight of the earth's crust

8

What type of bond exists in diamond covalent

A method in determining the hardness of a material that uses very small diamond

indented into surface features using microscope on metallographic specimen

Vickers Pyramid Scale

Which of the following band gap energies will appear colored

betqween 1.8 to 3.1 eV

Materials that are utilized in transducer devices that convert electrical energy into mechanical strains or vice versa

piezoelectric

What do you call a form of stress assisted corrosion, wherein vapor

bubbles form nd then burst on a surface causing damage to the underlying

materla

Cavitation

The class of ceramic capacitors used in couplings, filtering or bypass

applicationsclass II

A type of matrix composite where the fiber may be continuous throughout the length of the component, or less than a

micrometer in length, and present at almost any volume fraction, from 5 to

75%

metal matrix

The property of materials capable of withstanding cyclic load is normally

expressed infatigue strength

Which of the following statement about titanium is not correct

titanium offers negligible resistance

A mistake in engineering materials that involves atom, ion lattice site or

interstitial position is reffered to as __

point defect

defect

The size of an electron is very small, the diameter is however believed to be about

__ anstrom0.0001

A property of matter that is often used by chemist as an identification tag for a

substancedensity

In engineering materials, nickel silver, also known as German silver, is an alloy

ofcopper, nickel zinc

Which steel possesses the highest stiffness and compressive stress

cemented carbide

These are materials formed from repeating organic molecules

polymer

What are the substances having the same chemical formula but different structure

isomers

These are large molecule substances bonded to each other with weak bonding

forces and softens when heatedthermoplastics

The highest filled energy state at 0 K of an atom

fermi energy

It occurs when a member carries a load perpendicular to its long axis while being supported in a stable manner

bending stress

A type of corrosion that occurs when dissimilar metals exist at different

electrical potentials in the presence of an

galvanic corrosion

electrolyte

Corrosion that occurs in austinic stainless steels under tensile stress in the presence of oxygen, chloride ions, and

high temperature

chloride stress corrosion

This bond is similar to the molecular bond and occurs due to the ease with which hydrogen atoms are willing to

give up an electron to atoms of oxygen, fluorine, or nitrogen

hydrogen bond

Ferrite. Chromium. Nickel. Molybdenum. All of the following

materials possess high strength and low ductility and are BCC structure except

nickel

What are stresses included in vessels containing pressurized materials

pressure stresses

What is the ability of the material to resist deformation

toughness

A type of line defect consists of an extra row or plane of atomes in the crystal

structureedge dislocations

These materials have randomly oriented polycrystals - thus physical properties

are the same in all directionsisotropic

Which of the following is the smallest representation of an engineering material

unit cell

The amount of force required to cause a unit deformation (displacement) often

stiffness

called the spring constant is the

The thermal stress in a bar that is allowed to expand freely when heated to

higher temperature iszero

When applied normal and shear stresses are resolved in such a manner that the shear stresses vanish (go to zero), the

resulting normal stresses are called the

principal stresses

What is the material stress for brittle materials, in the calculation of allowable

stress from the formulaultimate strength

Full Annealing. Normalizing. Tempering. Quenching. In the

manufacture of steel, all of the following are processes to relieve internal stresses,

refine grain size, and soften material (i.e., improve machinability) except

quenching

All of the following are crystalline point defects except

screw dislocations

The quantity needed to close the circuit around a crystalline dislocation is called

Burger's vector

All of the following are typical crystalline defects except

mass defects

A ductile material is one that can be stretched, formed, or drawn to a

significant degree before fracture. A metal that exhibits a percent elongation

greater than __% is considered to be ductile

5

It refers to the arrangement of the grains in metal, with a grain having a particular

structuregrain structure

Is the property or ability of a metal to exist in two or more crystalline forms

depending upon temperature composition

polymorphism

A solid solution where the atoms of the solute element are small enough to fit

into the spaces between the parent material atoms

interstitial solid solution

A phase of uranium material where it posseses a lattice structure of BCC and

expands equally in all directionsgamma phase

The description or type of lattice structure formed in metals such as

Beryllium is the __ structurehexagonal closed pack

The weakly repulsive force experienced in most non-metals and organic

compounds (e.g. bismuth, paraffin, and silver) when exposed to a magnetic field

is

diamagnetism

The unit of toughness is Joules/m3

A linear polymer that has all of the side group on the same side of the chain

isotactic

The property of fluids by virtue of which they offer resistance to flow is known as

viscocity

What is the chief ore of tin cassiterite

What is the chief ore of zinc sphalerite

What is the mixture of two or more materials, at least one is a metal with

microstructure where secondary atoms are introduced as substitutional or

interstitial in a crystal lattice

alloy

What materials have permeability slightly greater than that of free space

paramagnetic

What is the process of forming continuous shapes by forcing a molten

polymer through a metal dieextrusion

Three-dimensional macroscopic effects are called

bulk defects

If the distorion disappears and the material remains distorted then this

material undergoes whatplastic strain

The property of a substance which remains constant if no heat enters or

leaves the system, while it does work or alters its volume, but which increases or

diminishes should a small amount of heat enter or leave

entropy

A homogenous mixture can be separated by all of the following methods except

filtration

The amount of energy needed to change a given mass of ice to water at constant

temperature is called the heat offusion

Chemical action may involve all of the

following except separation of the molecules in a mixture

The properties of solution include all of the following except that

dissolved particles will settle out upon stirring

It the delta H of a reaction is a negative quantity, the reaction is definitely

exothermic

The bromide ion is colorless

Which of the following is a compound water

The most active non-metallic element is Fluorine

When chlorine water and carbon tetrachloride are mixed with an

unknown, a violet layer is produced. The unknown is

Iodide

The two main parts of atom are the nucleus and energy levels

The lowest principal quantum number that an electron can have is

2

The sublevel that has only one orbital is identified by the letter

s

An orbital may never be occupied by 3 electrons

The number of orbitals in the second principal energy level, n=2, of an atom is

4

Oxygen. Citric Acid. Sodium Chlorate. Hydrochloric Acid. Which of the

Hydrochloric Acid

following is a binary compound

An example of a ternary compound is Potassium Chlorate

Name the element whose atom shows the greatest affinity for an additional

electronF

Name the most active non-metal in period 3

Cl

Which of the following elements is most likely to form covalent compounds

C

An atom which has the greatest ability to attract electron is

oxygen

What is the charge of a hydrogen atom 0

What is the most probably oxidation number for silicon in a compound

+4

Where in the periodic series do you find strong base formers

Left

The most abundant element in the earth's crust is

oxygen

The order of decreasing activity of halogens

F, Cl, Br, I

A light-sensitive substance used on photographic films has the formula

AgBr

The charring action of sulphuric acid is

due to its being a dehydrating agent

In a graphic representation of energy contents of reactants and resulting

products, which would have a higher energy content in an exothermic reaction

the reactants

The process of separating components of a mixture by making use of the

difference in their boiling points is calledfractional distillation

According to the activity chart of metals, which metal would react most

vigorously in a dilute acid solutionMagnesium

Graham's Law refers to Gaseous Diffusion

When a gas is collected over water, the pressure is corrected by

Subtracting the vapour pressure of water at that temperature

Distillation of water cannot remove volatile liquids like alcohol

The ratio in water of hydrogen to oxygen by mass is

1:8

Decomposing water by an electric current will give it a ratio of hydrogen to

oxygen by volume equal to2:1

If 10 g of ice melts at 0 deg Celsius, the total quantity of heat absorbed is

800 cal

The abnormally high boiling point of water in comparison to similar compounds is due primarly to

hydrogen bonding

A metallic oxide placed in water would most likely yield

base

A solution can be both saturated and diluted

A foam is an example of a gas dispersed in a liquid

When another crystal was added to a water solution of the same substance, the crystal seemed to remain unchanged. Its

particles where

exchanging places with others in the solution

A 10% solution of NaCl means that in 100g of solution there is

10 g NaCl

A synthesis reaction will occur spontaneously if the heat formation of

the product islarge and negative

Whenever you have equal volumes of gases at the same temperature and

pressure, the volume mustcontain equal number of particles

It is the transfer of energy from the more energetic particles of substance to the

adjacent less energetic ones as a result of interactions between the particles

conduction

It indicates that the rate of heat conduction in a direction is proportional

to the temperature gradient in that direction

Fourier's Law of Heat Conduction

Which of the following is the best conductor of heat

diamond

It is the mode of energy transfer between

a solid surface and the adjacent liquid or gas that is in motion, and it involves the combined effect conduction and fluid

motion

convection

In second law of thermodynamics, which of the following states that no heat

engine can have a thermal efficiency of 100% on as far as power plant operates, the working fluid must exchange heat with the environment as well as the

furnace

Kelvin-Plank

In second law of thermodynamics, which of the following states that no device can

transfer heat from cooler body to a warmer one without leaving an effect on

the surroundings

Clausius Statement

It is defined as the amount of light output in lumens per W of electricity

consumedlight efficacy

Which of the following processes are involved in carnot cycle

two adiabatic; two isothermal

States that the thermal efficiencies of all reversible heat engines operating

between the same two reservoirs are the same, and that no heat engine is more

efficient than a reversible one operating between the same two reservoirs

Carnot principle

For a metal atom to replace another kind of metallic ion in a solution, the metal

atom must be

higher on the electromotive chart than the metal in solution

One reason for a double-displacement reaction go to completion is that

a product is soluble

A salt derived from a strong base and a weak acid will undergo hydrolysis and

give a solution that will bebasic

The propery of being able to add enthalpies is based on the

First law of thermodynamics

Which of the following does not affect the rate of reaction

speed of the reactants

The addition of a catalyst to a reaction changes the activation energy

An increase in concentrationis related to the number of collisions

directly

At the beginning of a reaction, the reaction rate for the reactants is

largest, then decreasing

The concentrations in an expression of the equilibrium constant are given in

mol/L

The pH concentration of a solution that has a hydrogen ion concentration of 1 x

10^-4 mol/L is4

The pH concentration that has a hydroxide ion concentration of 1 x 10^-4

molL is

A small value of Keq + the equilibrium constant, indicates that

The concentration of the un-ionized molecules must be relatively large compared to the ion concentrations

In the Haber process for making ammonia, an increase in pressure favors

the forward reaction

A change in which of these conditions will change the K of an equilibrium

temperature

H2SO4 is a strong acid because it is an organic acid

According to the Bronsted Theory, an acid is

a proton donor

A buffer solution __ resists changes in pH

The point at which a titration is complete is called the

endpoint

The first and simplest alkane is Methane

Pierre and Marie Curie discovered Radium

Which of the following when dissolved in water and placed in the conductivity apparatus will cause the light to glow

table salt

The lead in a lead pencil is Graphite and clay

A decolorizer used in sugar refining is bone black

An important ore of iron is Hematite

The emission of beta particle results in a new element with the atomic number

increased by 1

A process where heat is releaseed to the surroundings

exothermic process

The total energy of the system. It contains the translational, rotational, vibrational, electronic, and nuclear

energies and the energies due to intermolecular interactions. Its absolute value is unknown; its change is defined by the first law of thermodynamics. It is

a state function and an extensive quantity

Internal Energy

A property that is determined by the state of the system. The change in the state function is path independent and defined by the properties in the initial

and final state only

state function

The law states that the quantity of the substance entering and leaving the

system is equal to the substance leaving the system

law of conservation of mass

States that if system A is in thermal equilibrium with system B, and system B is in thermal equilibrium with system

C, then system C is also in thermal equilibrium with system A

Zeroth law of thermodynamics

Energy is neither created nor destroyed, but is converted from one form to

anotherfirst law of thermodynamics

A process in which the system is always infinitesimally close to equilibrium.

Such a process can never be observed, it is only of theoretical interest

Reversible process

States that the change in entalphy of a reaction is the sum of the enthalpies of

reactions from which the reaction can be built

Hess' Law

States that in isolated systems the entropy increases in spontaneous process

2nd law of thermodynamics

It is impossible to convert heat completely into work

2nd law of thermodynamics

States that every substance has finit positive entropy except the entropy of

pure, perfect crystalline structure which is 0 at 0 K

3rd law of thermodynamics

Defined as A = U - TS, where U is internal energy, T is the thermodynamic

temperature and S is the entropyHelmholtz Energy

In a closed system at constant volume and temperature its energy decreases

during a spontaneous processHelmholtz Energy

In a closed system at constant pressure and temperature its energy decreases

during a spontaneous processGibbs Energy

The number of intensive variables that can be changed independently in the

system without disturbing the number of phases in equilibrium

degrees of freedom

A solution in which both the solvent and the solute obey Raoult's Law for any

compositionIdeal solution

It states that the vapour pressure in a solution is the sum of the vapour pressure of the pure component

multiplied by the mole fraction of that component

Raoult's law

The principle that the amount of gas dissolved under equilibrium in a volume

of liquid is in direct proportion to the pressure of the gas that contact the liquid

surface

Henry's Law

Is a compound which in its liquid form behaves as an electrically conduction

mediumElectrolyte

Properties independent of the nature of the compounds and depend on the

numbers of the solute particles onlyColligative properties

Movement of the solvent through a semipermeable membrane from a dilute

solution to a more concentrated oneOsmosis

The dissolution of a substance in two immiscible liquids

Partition

States that if an external stress is applied to a system at equilibrium, the system adjusts in such a way to decrease the

effect of the stress

Le Chatalier's principle

It is a constant of proportionality between the reaction rate and the

concentration of reactantsrate constant

Sum of all powers appearing in the empirical law

Reaction order

The sequence of elementary steps describing the time evolution of the

systemreaction mechanism

Reactions taking place at the same time parallel reaction

Which of the following equation of state has two constants

Vander Waals Equation

How many constants are there in Benedict Webb Rubin

8

How many constants are there in Strobridge Equation of state

16

A reaction step where the first chain carriers are formed

initiation step

A reaction in which the number of chain carriers increases

Branching step

A reaction in which the number of chain carriers is constant but the product is

consumedRetardation Step

A reaction in which the number of chain carriers decreases

termination step

Date of approval of RA 9292 April 17, 2004

There are __ Articles and __ sections in the RA 9292

8, 43

Any person who shall violate any provision of RA 9292 or any rules,

regulations, the Code of Ethics, and the Code of Technical Standards of Practice

is stated in section

35

The chairperson of the PRC shall include

in the Commission's program the implementation of RA 9292, the funding of which shall be included in the Annual

General Appropriations Act

Sec 40

The statement of policy of RA 9292 is __ of its implementing rules and

regulationsRule 1

What is otherwise known as the Electronic Commerce Act of the

PhilippinesRA 8792

It is a method of managing all the activities that affect the quality of goods

or services in order to prevent faultsQuality Assurance

This process can be used to measure achievement in Total Quality

Management system. Also it provides the essential control and measure

feedback loop necessary for quality improvement

Benchmarking

To aid the engineer manager about the needs of his peers, __ states that

employees have five basic needs which are as follows: physiological, security, social, esteem and self-actualization

Maslow's Needs Hierarchy Theory

What style of leadership should the engineer manager use when his unit is

manned by professionalsfree rein leadership

When is the effectivity date of the implementing rules and regulations of

RA 9292October 2, 2007

When there is an unexplained decline in

revenues and profits in the company, it is a sign that the engineer manager has __

inadequate control

What is the keystone of professional conduct

integrity

A type of bond where in the security is in sum's form of recognized commercial papers of a well established subsidiary

collateral bond

The ratio of quick assets to current liabilitie is known as the

acid-test ratio

The ratio of net income before taxes to the net sales is the

profit margin

What do you call the value of the stock as stated on the stock certificate

par value

The interest rate being referred to in economics is __ if the compounding of

the interest is annualeffective rate

The rate of an investment ratio as defined in economics is the ratio of the

net income to __owner's equity

The present worth of all depreciations over the economic life of the item is __

capital recovery

What do you call a market situation where there are many sellers and few

buyersoligopsony

A market situation where a unique product or service is available from a

single vendor and that vendor can

monopoly

prevent the entry of all others into the market

In handling unsolcited or unwanted commercial and promotional advertisements and surveys,

complainants who are not satisfied with the action of the Public Telecom Entities

or Content Providers may bring the matter to the NTC in writing within __ from receipt of the alleged text spam

3 months

This type of business organization can be set up without any formality. It exists

when there are a number of people involved who are part owners of the

business

Partnership

What is the mimimum fine for persons who violate a provision of RA 9292

Php 100,000

If an EE is to appear as an expert witness in court arbitration hearings, the

minimum fee chargeable to the client will not be less than __ attendance or

appearance

Php 1,000

The basic law providing for the regulations of radio station

communications in the Philippines and other purposes

RA 3846

Which of the following is not true for the qualifications of Board Members of

Electronics Engineering

Be a citizen and a resident of the Philippines for 5 consecutive years prior

to his appointment

As provided in ACT 3846, the construction of a radio station shall

begin only when

The NTC has already issued a Permit to construct

As provided in RA 7925, a VAS provider needs to secure a franchise if

it puts up its own network

In accordance with Radio Laws and Regulations, a base station in the Land Mobile Service must maintain entry in

its logbook, for a period of __ if emergency signal is received

2 years

It is the process of attracting potential employees to the company so that the selection process can be carried out

Recruitment

It is the name given to any activity undertaken by the organization with the express purpose of gaining information

about potential customer

Market Research

In accordance with the Philippine Electronic Code the maximum

accumulated permissible dose (MPD) of radiation associated with a radio

transmitter for a human being who is 54 years old is __ rems

180

Department Order No. 88 at the DPWTC also require the supervision of an ECE in

the operation and maintenance of any radio communications system composed

of __ more of any type of land radio stations

6

The maximum fine for any violation of RA 3846, an act of providing for the

regulation of radio and communications2 years

When was the IRR of RA 9292 approved by the PRC

August 31, 2007

The minimum carrier output power of transmitters that require supervision of

an Electronics Engineer is1 kW

In class B FM transmitter, the antenna height must be at least __ above the

average terrain500 ft

In NTC 03-11-02005, it states that any person or entity intending to register as

VoIP service provider has to post a performance bond of how much

5 Million

What is defined as a legally binding agreement or promise to exchange good

or servicescontract

What refers to a fundamental obligation under the contract which goes to the root

of the contractcondition

What refers to a statement or oath, often religious in nature, agreed by an

individual in ceremoniescreed

What is defined as a non-performance that results in the injured party receiving

something substantially less than or different from what the contract is

intended

Material Breach

What unit is used to measure the accumulative effects of radiation that can cause generic and somatic effects

Roentgens

What refers to the process of producing, forming or fabricating electronic

equipment and/or related components,

manufacturing

parts, devices and accessories

The promulgation of the syllabi/table of specification for the subjects in the board

licensure examination for electronics technician (ECT) was done in the city of

Manila on __

February 9, 2011

The promulgation of the syllabi/table of specification for the subject in the board

licensure examination for electronics technician (ECT) is also known as the Board of Electronics Engineering __

Board Resolution No. 1 Series of 2011

To qualify for the Electronics Technician examination, he/she must be a graduate of an Associate, Technician,

Trade or Vocational course in electronics or, subject to the evaluation

of the Board, such equivalent and/or related formal or non-formal course or

program from any school, college, university, or training insitution

recognized by the government or the State where it is established after

completing a resident course or program of not less than __

2 years

What costs represents money which has been spent or capital which has been

invested and which cannot be recovered due to certain reasons

sunk costs

NTC memorandum Circular requires Class B-1 to have a transmitter power of 500W and an effective radiated power

not lower than __ watts

1000

In Metro Manila, commercial load shall not exceed __ minutes for one hour

15

program

It is the value which is usually determined by a disintersted third party in order to establish a price that is fair to

both seller and buyer

fair value

The __ of a property is what the property is worth to the owner as an operating

unitutility value OR use value

It is used when products are made singly or in small batches. It happens when a

small number of products are processed at each storage before going on to the

next stage

job production

It involves a voluntary association of people, called members, who operate an enterprise collectively. The aim of this organization is not to make profit but to

give support to their members

Cooperative

__ depreciation is due to the lessening in the demand for the function which the

property was designed to renderfunctional

A provision placed in a contract which indicates the possible adjustment of

material and labor costs is calledescalatory clause

A mode of extinguishing obligations when a creditor abandons his right to

collect isforfeiture

The sum of direct labor cost incurred in the factory and the direct cost of material

are known as __ costsprime

What refers to a principal function of lower management which is to instill in

the workforce a comitment and enthusiasm for pursuing the goals of the

organization

motivating

What government agency was designated as the chairman of the Electronic Commerce Promotion

Council

DTI

RA 9292, Section 17 states that the result of the board examination shall be

released within __ days after the examination

15

It is the rational way to ensure that our limited time is always used effectively

time management

According to the code of professional ethics and conduct, each and every

engineer shall recognize and respect the supreme authority of the __ as expressed

in its laws and implemented by its agencies

state

In continuing Profession Education, how many points will be given to the resource speaker of a recognized

seminar/convention

5 CU per hour

In continuing Profession Education, how many additional points will be given upon completing a Master's degree

30 CU

How many CPE points will be given for a Master's Degree

1 CU per academic unit

In Continuing Profession Education, how many points will be given to a

panelist/reactor/ of a recognized program3 CU per hour

Which of the following is a chemical property of a slice of chocolate cake?

dietary calories

Which of the following is an extensive property of a bubble of air?

radius

Which of the following is an intensive property?

density

Which of the following is a physical property?

temperature

The specific volume of a substance is the volume per gram of substance. Specific

volume is an example of?a physical, intensive property

How many million tons of hydrogen are converted into helium every second at

the sun?700 million

What is the expression of the magnitude and direction of the lattice distortion

associated with dislocation?Burgers Vector

What theorem relates the line integral of a vector field around a simple closed curve C is in IR3 to an integral over surface S for w/c C is the boundary?

Stokes Theorem

A tornado warning siren on top of a tall pole radiates sound waves uniformly in

all directions. At a distance of 15.0 m the intensity of the sound is 0.250 W/m2. At

what distance from the siren is the

75

intensity 0.010 W/m2?

What is the speed of longitudinal waves in a lead rod?

1.2 x 103 m/s

Consider an idealized model with a bird (treated as a point source) emitting

constant sound power, with intensity inversely proportional to the square of

the distance from the bird. By how many

-6.0 dB

A stopped organ pipe is sounded near a guitar, causing one of the strings to

vibrate with large amplitude. We vary the tension of the string until we find the maximum amplitude. The string is 80% as long as the stopped pipe. If both the

pipe and the string vibrate at their fundamental frequency, calculate the

ratio of the wave speed on the string to the speed of sound in air.

0.40

The Concorde is flying at March 1.75 at an altitude of 8000m, where the speed of

sound is 320 m/s. How long after the plane passes directly overhead will you

hear the sonic boom?

20.5 sec

A glass flask with volume 200 cm3 is filled to the brim with mercury at 20°C. How much mercury overflows when the

temperature of the system is raised to 100°C? The coefficient of linear

expansion of the glass is 0.40 x 10-5 K-1

2.7 cm3

An aluminium cylinder 10 cm long, with a cross-sectional area of 20 cm2, is to be used as a spacer between two steel walls.

At 17.2°C it just slips in between the walls. When it warms to 22.3°C,

-8.6 x 106 Pa, -1.7 x 104 N

calculate the stress in the cylinder and the total force it exerts on each wall, assuming that the walls are perfectly rigid and a constant distance apart.

You are designing an electronic circuit element made of 23 mg of silicon. The

electric current through it adds energy at the rate of 7.4 mW = 7.4 x 10-3 J/s. If your design doesn’t allow any heat

transfer out of the element, at what rate does its temperature increase? The

specific heat of silicon is 705 J/kg-K.

0.46 K/s

A geologist working in the field drinks her morning coffee out of an aluminium cup. The cup has a mass of 0.120 kg and is initially at 20.0 °C when she pours in

3.00 kg of coffee initially at 70.0 °C. What is the final temperature after the

coffee and the cup attain thermal equilibrium? (Assume that coffee has the

same specific heat as water and that there is no heat exchange with the

surroundings.)

66.0 °C

In the Iron-Iron carbide diagram, the alloys containing solid phase with more

that 2% carbon are known as?cast iron

__ is use to nullify the effect harmful effect of sulphur in steel and is added

during deoxidation?Manganese

The intermetallic compound iron carbide is called?

cementite

__ raises the elastic limit and ultimate strength of the steel without reducing the

ductility?silicon

__ the combination of operation involving the heating of metal/alloy in solid state and cooling it to obtain the

desired properties?

heat treatment

The transformation product of austenite at low temperature is known as?

martensite

Any steel heated to a particular temperature above the critical

temperature results in the formation of?martensite

The principal source of information in the actual process of autenite under non-

equilibrium condition as a?TTT Diagram

__ involves heating to a predetermined temperature, holding at that temperature

and then cooling at a very slow rate?Annealing

The total electrical resistivity of a metal is equal to the sum of temperature-, impurity-, and cold work-dependent

contributions?

Matthiessen’s rule

A single quantum of vibrational or elastic energy?

phonon

The time-dependent permanent deformation that occurs under stress; for

most materials it is important only at elevated temperatures?

creep

In Engineering Economy, what do you call the method of repaying a debt, the principal and interest included, usually

by a series of equal payments at periodic

depreciation

intervals of time?

A type of bond where in the security is in sum’s form of recognized commercial papers of a well established subsidiary?

collateral bond

The ratio of quick assets to current liabilities is known as the?

acid test ratio

In handling unsolicited or unwanted commercial and promotional

advertisement and surveys, complainants who are not satisfied with the action of the Public Telecom Entities or Content Providers may bring the matter to the

NTC in writing within _____ from receipt of the alleged text spam?

3 months

In accordance with the International Telecommunications Union, the

Philippines as well as Japan, belong to what region as far as frequency

allocation and wage is concerned?

region 3

What is the minimum fine for persons who violate a provision of R.A. 9292?

P 100,000

The electronic designer will furnish how many sets of drawings, classifications

and other contract documents?5

In accordance with the Philippine Electronic Code the maximum

accumulated permissible dose (MPD) of radiation associated with a radio

transmitter for human being who is 54 years old is _________ rems?

180

It refers to the process of producing,

forming or fabricating electronic equipment and/or related components,

parts, devices and accessories?manufacturing

What law regulates the operation of CATV systems in the country?

E.O. 205

Find the amount at the end of two years and seven months if P1000 is invested at 8% compounded quarterly using simple

interest for anytime less than a year interest period?

P 1226.34

A steel tape 100m long is 2mm too short. The effective dimension of the

steel tape is 40mm, 20mm thickness, and 20mm width. How much tensile pull

should be applied at the edge of the steel tape to have 100m distance? The modulus of elasticity for steel is

200000MPa?

3200 N

What is the most common defects in crystals?

Line defects

Oldest engineering material known for its good malleability property?

Copper

A kind of solid which is characterized as consisting of ordered three dimensional arrays of structure motif, is classified as

__ solids.

crystalline

What crystalline structure has a packing factor of 0.52?

Body centric cubic

What gives the average ratio of stress to strain of the material operating in the non-linear region of the stress-strain

secant modulus

diagram?

A tank 8 m in diameter, 12 m high is completely filled with water. Determine

the minimum thickness of the tank plating if the stress is limited to 40 MPa?

11.72mm

Aluminum is how many % by weight of the earth’s crust?

8%

What do you call a form of stress assisted corrosion, wherein vapor

bubbles form and then burst on a surface causing damage to the underlying

material?

cavitation

What are stresses induced in vessels containing pressurized materials?

pressure stresses

The most active non-metallic element is? fluorine

When chlorine water and carbon tetrachloride are mixed with an

unknown, a violet layer is produced. The unknown is a(n)?

iodide

Name the element of the first 20 whose atom gives up an electron the most

readily?K

When a gas is collected over water, the pressure is corrected by?

Subtracting the vapour pressure of water at that temperature*

At 5 atm pressure and 70 degs C, how many moles are present in 1.5L of

O2 gas?0.267

Graham’s Law refers to? Gaseous diffusion

Enthalpy is an expression for the? Heat content

A process where heat is released to the surroundings.

Exothermic process

In a closed system at constant volume and temperature its energy decreases

during a spontaneous process?Helmholtz Energy

In a closed system at constant pressure and temperature its energy decreases

during a spontaneous processGibbs Energy

It states that the vapour pressure in a solution is the sum of the vapour pressure of the pure component

multiplied by the mole fraction of that component.

Raoults Law

The principle that the amount of gas dissolved under equilibrium in a volume

of liquid is in direct proportion to the pressure of the gas that contact the liquid

surface

Henrys Law

Sum of all powers appearing in the empirical law?

Reaction order

A reaction step that represents the reaction at the molecular level

Elementary step

Assumes that the concentration of a reaction intermediates is constant during

the main part of the reaction.Steady-state approximation

A reaction in which the number of chain carriers decreases

Termination step

Mr. Mangalindan would like to earn 7% of his income after payment of his taxes due. If the income of his investment will be taxed 42%, what is the minimum rate

of return, before payment, must his investment has to attain his goal?

12%

How much heat must be supplied to a pan of 500 g to increase the temperature from 20°C to 100°C if the pan is made up of aluminum? Specific heat capacity

of aluminum is 0.22 cal/g-°C.

8800 cal

A heat engine operates with a supplied heat of 65 kcal and exhausts 40 kcal.

How much work is done by the engine?104600 J

A charge A of +250 statcoulomb is placed in between 2 charges B of +50

statcoulomb and C of -300 statcoulomb. A is 5 cm from B and 10 cm from C.

What is the force on A?

1250 N

The amount of force required to cause a unit deformation (displacement) often

called the spring constant is the?stiffness

What is the material stress for brittle materials, in thecalculation of allowable

stress from the formula?ultimate strength

Determine the maximum torque that can be applied to a hollow circular steel shaft of 100-mm outside diameter and 70-mm

inside diameter without exceeding a shearing stress of 60 MPa or a twist of

5,403 N-m

0.5 deg/m. Use G=83 GPa.

A simple beam having a span of 6 m has a weight of 20kN/m. It carries a

concentrated load of 20kN at the left end and 40 kN at 2m from the right end of the beam. If it is supported at 2m from

the left end and at the right end, compute the reaction at the right end of the beam.

40 kN

A type of line defect consist of an extra row or plane of atoms in the crystal

structure?edge dislocations

Nuclear physicists commonly use particle accelerators to?

fabricate elements that don’t occur naturally

High levels of UV radiation, either short term or long term, are known or believed

to cause all the following except?ozone depletion

A diverging lens? can collimate converging rays of light

If a spaceship is slowing down, that is, losing speed in the forward direction, the

perceived force inside the ship is directed

toward the front

Defined as 1/π candle per square centimetre?

Lambert

Who developed a wave equation, the solution of which described the wave

amplitude of the matter waves as well as the allowed energy values the particle

can have?

Erwin Schrodinger

These are highly penetrating

electromagnetic radiation, not deflected by magnetic or electric fields, and

produce little ionization?gamma particles

How many molecules are present in 2.5 liters of gas at STP?

6.7 x 1022 molecules

Under which of the following conditions does the behavior of a real gas resemble

that of an ideal gas?

only at low densities when the molecules are relatively far apart

Consider two water drops at a temperature T. These drops are not

allowed to exchange energy with their environment. These two drops collide

and combine. How does the temperature of these drops change when they

combine?

increase

Which of the following quantities has the greatest Influence on the overall

efficiency of a conventional (Rankine cycle) electric generating station burning

fossil fuels?

steam temperature at the steam turbine inlet

The modulus of elasticity for a material refers to?

the ratio of stress over strain

What property of a metal describes the onset of plastic deformation in a tensile

test?yield strength

Which of the following is not a stage in color changing process in alchemy?

Kuntosis

Which of the following is the common name for battery acid

Sulfuric Acid

The element that was discovered between calcium and titanium

Scandium

The shorthand name for molybdenum is? Mo

500 years ago, Rajah Salayog deposited P0.01 with an interest rate of 5% per annum. Now the bank discovered that you are the only left in the clan and entitled to receive the money. How

much is it?

Php 393,618,232.3

It is a financial summary showing the relationship among assets, liabilities, and

ownership in the corporation on a specific date?

balance sheet

The promulgation of the syllabi/table of specification for the subjects in the board

licensure examination for electronics technician (ECT) was done in the city of

Manila on?

February 9, 2011

The promulgation of the syllabi/table of specification for the subjects in the board

licensure examination for electronics technician (ECT) is also known as the Board of Electronics Engineering __ ?

Board Resolution No. 1 Series of 2011

To qualify for the Electronics Technician examination, he/she must be a graduate of an Associate, Technician,

Trade or Vocational course in electronics or, subject to the evaluation

of the Board, such equivalent and/or related formal or non-formal course or

program from any school, college. university or training institution

recognized by the government or the State where it is established after

2 years

completing a resident course or program of not less than?

According to the syllabi for the Electronics Technician licensure

examination, which of the following is not classified under technical subjects?

Philippine Electrical Code

In Continuing Profession Education, how many additional points will be given upon completing a Master’s

degree?

30 CU

In Continuing Profession Education, how many points will be given to the

resource speaker of a recognized seminar/convention?

5 CU per hour

In Continuing Profession Education, sole authorship of book monograph with

more than 100 page will merit the author40 CU