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2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Microelectronics
Please indicate the subject:
(x) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
According to ________________, all objects radiate energy, no matter what their
temperature happens to be.
Choices:
a. Stefan – Boltzmann Law
b. Pascal’s Law
c. Huygens’ Principle
d. Boltzmann Law
ANSWER:
a. Stefan – Boltzmann Law
SOLUTION ( IF PROBLEM -SOLVING)
Reference: p.317 Contemporary College Physics
Jones / Childers
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QUESTION:
Who is called the father of modern science precisely because he initiated the comparison
between theory and experiment?
Choices:
a. Plato
b. Aristotle
c. Galileo
d. Socrates
ANSWER:
c. Galileo
SOLUTION ( IF PROBLEM -SOLVING)
Reference: p.46 Physics the Excitement of Discovery
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QUESTION:
How many million tons of hydrogen are converted into helium every second at the sun?
Choices:
a. 400 million tons
b. 500 million tons
c. 600 million tons
d. 700 million tons
ANSWER:
d. 700 million tons
SOLUTION ( IF PROBLEM -SOLVING)
Reference:
p. 439 Physics the Excitement of Discovery
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QUESTION:
What is the unit of radiation which takes into account its biological effects?
Choices:
a. millirem
b.millisem
c. siemens
d. hertz
ANSWER:
a. millirem
SOLUTION ( IF PROBLEM -SOLVING)
Reference: p.435 Physics the Excitement of Discovery
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QUESTION:
What is the expression of the magnitude and direction of the lattice distortion associated
with dislocation?
Choices:
a. Vector graph
b. Line vector
c. Vector Diagram
d. Burgers Vector
ANSWER:
d. Burgers Vector
SOLUTION ( IF PROBLEM -SOLVING)
Reference:
p.76 chapter 4, Material Science and Engineering (an introduction) 4th edition by William
B. Callister Jr.
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QUESTION:
It states that two images are just resoluable when the center of diffraction disk of one is
directly over the first minimum in the diffraction pattern of the other
Choices:
a. Relay criteria
b. Rayleigh criterion
c. Radio Criterion
d. None of the above
ANSWER:
b. Rayleigh criterion
SOLUTION ( IF PROBLEM -SOLVING)
Reference: p.718 chapter 37 General Physics by Douglas C. Giancoli
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QUESTION:
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 bondary?
Choices:
a. Stokes Theorem
b.Gradient Theorem
c.Vector Theorem
d. None of the above
ANSWER:
a. Stokes Theorem
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Vector Calculus Chapter 7 page 355 by Masden and Tromba
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QUESTION:
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/m 2. At
what distance from the siren is the intensity 0.010 W/m2?
Choices:
a. 74.0 m
ANSWER:
b. 75.0 m
b. 75.0 m
c. 76.0 m
SOLUTION ( IF PROBLEM -SOLVING)
r2  r1
I1
0.250W / m2
 (15.0m)
 75.0m
I2
0.010W / m2
Reference: University Physics with Modern Physics, 11th Edition
By Young and Freedman
Page 567
d. 77.0 m
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QUESTION:
In a sinusoidal sound wave of moderate loudness the maximum pressure
variations are of the order of 3.0 x 10-2 Pa above and below atmospheric pressure
pa (nominally 1.013 x 105 Pa at sea level). Find the corresponding maximum
displacement if the frequency is 1000 Hz. In air at normal atmospheric pressure
and density, the speed of sound is 344 m/s and the bulk modulus is 1.42 x 105 Pa.
Choices:
a. 1.2 x 10-8 m
ANSWER:
a. 1.2 x 10-8 m
b. 1.2 x 10-6 m
c. 1.3 x 10-7 m
d. 1.3 x 10-6 m
SOLUTION ( IF PROBLEM -SOLVING)
k

v

2 f (2 rad )(1000 Hz )

 18.3rad / m
v
344m / s
pmax
3.0 x10 2 Pa
A

 1.2 x10 8 m
5
Bk
(1.42 x10 Pa )(18.3rad / m)
Reference: University Physics with Modern Physics, 11th Edition
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Page 594
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QUESTION:
What is the speed of longitudinal waves in a lead rod?
Choices:
a. 1.1 x 103 m/s
b. 1.2 x 103 m/s
c. 1.3 x 103 m/s
d. 1.4 x 103 m/s
ANSWER:
b. 1.2 x 103 m/s
SOLUTION ( IF PROBLEM -SOLVING)
v
1.6 x1010 Pa

 1.2 x 103 m / s
3
3

11.3x10 kg / m
Y
Reference: University Physics with Modern Physics, 11th Edition
By Young and Freedman
Page 600
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QUESTION:
Compute the speed of sound waves in air at room temperature (T=20°C) and find
the range of wavelengths in air to which the human ear (which can hear
frequencies in the range of 20-20,000 Hz) is sensitive. The mean molar mass for
air (a mixture of principally nitrogen and oxygen) is 28.8 x 10-3 kg/mol and the ratio
of heat capacities is ɣ = 1.40.
Choices:
a. 341 m/s
ANSWER:
d. 344 m/s
b. 330 m/s
c. 335 m/s
d. 344 m/s
SOLUTION ( IF PROBLEM -SOLVING)
v
 RT
M

(1.40)(8.314 J / mol K )(293K )
 344m / s
28.8 x103 kg / mol
Reference: University Physics with Modern Physics, 11th Edition
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Page 601
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QUESTION:
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 decibels does the sound intensity level drop
when you move twice as far away from the bird?
Choices:
a. 4.0 dB
ANSWER:
d. -6.0 dB
b. -4.0 dB
c. 6.0 dB
d. -6.0 dB
SOLUTION ( IF PROBLEM -SOLVING)
 2  1  (10dB)(log
I2
I
 log 1 )  (10dB)[(log I 2  log I 0 )  (log I1  log I 0 )]
I0
I0
 (10dB ) log
I2
I1
 (10dB ) log
r12
r12

(10
dB
)
log
r2 2
(2r1 ) 2
 (10dB ) log
1
 6.0dB
4
Reference: University Physics with Modern Physics, 11th Edition
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Page 607
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QUESTION:
On a day when the speed of sound is 245 m/s, the fundamental frequency of a
stopped organ pipe is 220 Hz. a.) How long is this stopped pipe? b.) The second
overtone of this pipe has the same wavelength as the third harmonic of an open
pipe. How long is the open pipe?
Choices:
a. 0.470 m, 0.392 m
c. 0.392 m, 0.470 m
ANSWER:
c. 0.392 m, 0.470 m
b. 0.740 m, 0.932 m
d. 0.932 m, 0.740 m
SOLUTION ( IF PROBLEM -SOLVING)
Lstopped 
v
345m / s

 0.392m
4 f1 4(220 s 1 )
 345m / s 
1100 Hz  

 2L
open 

Lopen  0.470m
Reference: University Physics with Modern Physics, 11th Edition
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Page 613
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QUESTION:
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.
Choices:
a. 0.38
ANSWER:
c. 0.40
b. 0.39
c. 0.40
d. 0.41
SOLUTION ( IF PROBLEM -SOLVING)
va
v
 s
4 La 2 Ls
vs
 0.40
va
Reference: University Physics with Modern Physics, 11th Edition
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Page 616
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QUESTION:
If the siren is moving away from the listener with a speed of 45 m/s relative to the
air and the listener is moving toward the siren with a speed of 15 m/s relative to
the air, what frequency does the listener hear?
Choices:
a. 277 Hz
ANSWER:
a. 277 Hz
b. 272 Hz
c. 727 Hz
d. 722 Hz
SOLUTION ( IF PROBLEM -SOLVING)
fL 
v  vL
340m / s  15m / s
fS 
(300 Hz )  277 Hz
v  vS
340m / s  45m / s
Reference: University Physics with Modern Physics, 11th Edition
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Page 625
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QUESTION:
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?
Choices:
a. 19.5 s
ANSWER:
b. 20.5 s
b. 20.5 s
c. 21.5 s
d. 22.5 s
SOLUTION ( IF PROBLEM -SOLVING)
1
 34.8
1.75
vs  (1.75)(320m / s)  560m / s
  arcsin
tan  
t
8000m
vs t
8000m
 20.5s
(560m / s)(tan 34.8)
Reference: University Physics with Modern Physics, 11th Edition
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Page 629
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QUESTION:
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.
Choices:
a. 2.4 cm3
ANSWER:
d. 2.7 cm3
b. 2.5 cm3
c. 2.6 cm3
SOLUTION ( IF PROBLEM -SOLVING)
 glass  3 glass  3(0.40 x10 5 K 1 )  1.2 x10 5 K 1
Vglass   glassV0 T  (1.2 x105 K 1 )(200cm3 )(100C  20C )
 0.19cm3
Vmercury   mercuryV0 T  (18 x105 K 1 )(200cm3 )(100C  20C )
 2.9cm3
Vmercury  Vglass  2.9cm3  0.19cm3  2.7cm3
Reference: University Physics with Modern Physics, 11th Edition
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Page 650
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QUESTION:
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, 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.
Choices:
a. +8.6 x 106 Pa, +1.7 x 104 N
c. -8.6 x 106 Pa, +1.7 x 104 N
ANSWER:
d. -8.6 x 106 Pa, -1.7 x 104 N
b. +8.6 x 106 Pa, -1.7 x 104 N
d. -8.6 x 106 Pa, -1.7 x 104 N
SOLUTION ( IF PROBLEM -SOLVING)
F
 Y T  (0.70 x1011 Pa)(2.4 x105 K 1 )(5.1K )  8.6 x106 Pa
A
F
F  A    (20 x104 m 2 )(8.6 x106 Pa)  1.7 x104 N
 A
Reference: University Physics with Modern Physics, 11th Edition
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Page 652
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QUESTION:
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.
Choices:
a. 0.44 K/s
ANSWER:
c. 0.46 K/s
b. 0.45 K/s
c. 0.46 K/s
d. 0.47 K/s
SOLUTION ( IF PROBLEM -SOLVING)
Q
7.4 x103 J
T 

mc (23x106 kg )(705 J / kg  K )
dT dQ / dt
7.4 x103 J / s


 0.46 K / s
dt
mc
(23x106 kg )(705 J / kg  K )
Reference: University Physics with Modern Physics, 11th Edition
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Page 655
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QUESTION:
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.)
Choices:
a. 63.0 °C
ANSWER:
d. 66 °C
b. 64.0 °C
c. 65.0 °C
d. 66.0 °C
SOLUTION ( IF PROBLEM -SOLVING)
Qcoffee  mcoffee cwater Tcoffee  (0.300kg )(4190 J / kg  K )(T  70.0C )
Qalu min um  malu min um calu min um Talu min um  (0.120kg )(910 J / kg  K )(T  20.0C )
Qcoffee  Qalu min um  0
(0.300kg )(4190 J / kg  K )(T  70.0C )  (0.120kg )(910 J / kg  K )(T  20.0C )  0
Solution of this equation gives T=66.0 °C
Reference: University Physics with Modern Physics, 11th Edition
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Page 661
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QUESTION:
A physics student wants to cool 0.25 kg of Diet Omni-Cola (mostly water), initially
at 25°C, by adding ice initially at -20°C. How much ice should she add so that the
final temperature will be 0°C with all the ice melted if the heat capacity of the
container may be neglected?
Choices:
a. 69 g
ANSWER:
a. 69 g
b. 70 g
c. 71 g
d. 72 g
SOLUTION ( IF PROBLEM -SOLVING)
QOmni  mOmni cwater TOmni  (0.25kg )(4190 J / kg  K )(0C  25C )  26, 000 J
Q1  mice cice Tice  mice (2.1x103 J / kg  K )[0C  (20C )]  mice (4.2 x10 4 J / kg )
Q2  mice L f  mice (3.34 x105 J / kg )
QOmni  Q1  Q2  0
26, 000 J  mice (42, 000 J / kg )  mice (334, 000 J / kg )  0
Solving for mice, we get mice = 0.069 kg = 69 g
Reference: University Physics with Modern Physics, 11th Edition
By Young and Freedman
Page 661 to 662
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QUESTION:
A Styrofoam box used to keep drinks cold at a picnic has total wall area (including
the lid) of 0.80 m2 and wall thickness 2.0 cm. It is filled with ice, water, and cans of
Omni-Cola at 0°C. What is the rate of heat flow into the box if the temperature of
the outside wall is 30°C?
Choices:
a. 1.01 x 106 J
ANSWER:
d. 1.04 x 106 J
b. 1.02 x 106 J
c. 1.03 x 106 J
d. 1.04 x 106 J
SOLUTION ( IF PROBLEM -SOLVING)
TH  TC
30C  0C
 (0.010W / m  K )(0.80m2 )
 12W  12 J / s
L
0.020m
Q  Ht  (12 J / s)(86, 400s)  1.04 x106 J
H  kA
Reference: University Physics with Modern Physics, 11th Edition
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Page 666
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QUESTION:
A thin square steel plate, 10 cm on a side, is heated in a black-smith’s forge to a
temperature of 800°C. If the emissivity is 0.60, what is the total rate of radiation of
energy?
Choices:
a. 800 W
ANSWER:
b. 900 W
b. 900 W
c. 1000 W
SOLUTION ( IF PROBLEM -SOLVING)
H  Ae T 4
 (0.020m2 )(0.60)(5.67 x108W / m 2 K 4 )(1073K ) 4
 900W
d. 1100 W
Reference: University Physics with Modern Physics, 11th Edition
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Page 669
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QUESTION:
The condition called standard temperature and pressure (STP) for a gas is
defined to be a temperature of 0°C = 273.15 K and a pressure of 1 atm = 1.013 x
105 Pa. If you want to keep a mole of an ideal gas in your room at STP, how big a
container do you need?
Choices:
a. 21.4 L
ANSWER:
b. 22.4 L
b. 22.4 L
c. 23.4 L
d. 24.4 L
SOLUTION ( IF PROBLEM -SOLVING)
V
nRT (1mol )(8.314 J / mol K )(273.15K )

p
1.013x105 Pa
 0.0224m3  22.4 L
Reference: University Physics with Modern Physics, 11th Edition
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Page 688
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PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
College Physics
Please indicate the subject:
(x) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
Five gas molecules chosen at random are found to have speeds of 500, 600, 700,
800, and 900 m/s. Find the rms speed.
Choices:
a. 711 m/s
ANSWER:
d. 714 m/s
b. 712 m/s
c. 713 m/s
d. 714 m/s
SOLUTION ( IF PROBLEM -SOLVING)
(500m / s)2  (600m / s) 2  (700m / s) 2  (800m / s) 2  (900m / s) 2 
(v )av 
5
2
 5.10 x105 m2 / s 2
The square root of this is vrms:
vrms = 714 m/s
Reference: University Physics with Modern Physics, 11th Edition
By Young and Freedman
Page 699
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QUESTION:
A rocket is in outer space, far from any planet, when the rocket engine is turned
on. In the first second of firing, the rocket ejects 1/120 of its mass with a relative
speed of 2400 m/s. What is the rocket’s initial acceleration?
Choices:
a. 17 m/s2
ANSWER:
d. 20 m/s2
b. 18 m/s2
c. 19 m/s2
d. 20 m/s2
SOLUTION ( IF PROBLEM -SOLVING)
m /120
m
dm
 0
 0
dt
1s
120 s
v dm
2400m / s  m0 
2
a   ex


  20m / s
m0 dt
m0
 120 s 
Reference: University Physics with Modern Physics, 11th Edition
By Young and Freedman
Page 313
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( ) Electronics System & Technologies
QUESTION:
A discus thrower moves the discus in a circle of radius 80.0 cm. At a certain
instant, the thrower is spinning at an angular speed of 10.0 rad/s and the angular
speed is increasing at 50.0 rad/s2. At this instant, find the tangential and
centripetal components of the acceleration of the discus and the magnitude of the
acceleration.
Choices:
a. 89.1 m/s2
ANSWER:
d. 89.4 m/s2
b. 89.2 m/s2
c. 89.3 m/s2
d. 89.4 m/s2
SOLUTION ( IF PROBLEM -SOLVING)
atan  r  (0.800m)(50.0rad / s 2 )  40.0m / s 2
arad   2 r  (10.0rad / s)2 (0.800m)  80.0m / s 2
a  atan 2  arad 2  89.4m / s 2
Reference: University Physics with Modern Physics, 11th Edition
By Young and Freedman
Page 337
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Material Science
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Question:
Cast Irons that contains 4.3% C is known as ____.
Choices:
a.
iron
Eutectic cast iron
d. Eutectiod cast iron
b. Eutectiod cast iron
ANSWER:
A. Eutectic cast iron
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy,
R. Srinivasan
Page 72
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Question:
At temperature above ________, iron is liquid form
Choices:
a.
1395 deg C
768 deg C
b. 910 deg C
ANSWER:
c. 1540 deg C
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy,
R. Srinivasan
Page 67
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c. 1540 deg C
d.
Address
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Question:
In the Iron-Iron carbide diagram, the alloys containing solid phase with more that 2% carbon are
known as ______
Choices:
b.
steel
b. Cast iron
c. alpha-ferrite
graphite
ANSWER:
B. cast iron
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 68
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d.
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Question:
______ is use to nullify the effect harmful effect of sulphur in steel and is added during
deoxidation
Choices:
a.
Magnesium
d. Phosphorus
b. Sodium
ANSWER:
b.
manganese
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 79
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Question:
The intermetallic compound iron carbide is called ________
c.
Manganese
Choices:
a.
Austenite
b. Cementite
c. ferrite
ANSWER:
B. cementite
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 70
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Question:
Steels which contain less than 0.8%C are known as __________
Choices:
a.
Hypoeutectiod Steel c. Hypereutectiod Steel
d. pearlite
b.
Hypereutectic Steel d. Hypoeutectic Steel
ANSWER:
A. Hypoeutectiod Steel
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 72
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Question:
Cast iron that contains more than 4.3%C is known as ________
Choices:
a.
b.
Hypoeutectiod Cast Iron
Hypereutectic Cast
ANSWER:
c.
Hypereutectiod Cast Iron
SOLUTION (if problem solving)
c. Hypereutectiod Cast Iron
d. Hypoeutectic Cast Iron
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 72
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Question:
_____ raises the elastic limit and ultimate strength of the steel without reducing the ductility
a.
b.
Phosphorus
Manganese
c. Sulfur
d. Silicon
ANSWER:
D. silicon
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 80
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Question:
_____ the combination of operation involving the heating of metal/alloy in solid state an cooling
it to obtain the desired properties
a. Heat treatment
b. Annealing
c. Normalising
d. Hardening
ANSWER:
A.
Heat Treatment
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 85
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Question:
The transformation product of austenite at low temperature is known as _______
a. Pearlite
b. Martensite
c. Bainite
d. Cementite
ANSWER:
B.
Martensite
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 90
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Question:
Any steel heated to a particular temperature above the critical temperature results in the
formation of ______
a. Cementite
b. Martensite
c. Austenite
d. Bainite
ANSWER:
C.
Austentite
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 86
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Question:
The principal source of information in the actual process of autenite under non-equilibrium
condition as a ______
a. TTT Diagram
b. TTL Diagram
c. TTC Diagram
d. CCT Diagram
ANSWER:
A.
TTT Diagram
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 89
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Question:
______ involves heating to a predetermined temperature, holding at that temperature and then
cooling at a very slow rate.
a. Heat treatment
b. Annealing
c. Normalising
d. Hardening
ANSWER:
B.
Annealing
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 98
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Question:
_____ is the process of rapid cooling of steel from the austenitising temperature
a. Hardening
b. Annealing
c. Quenching
d. Normalising
ANSWER:
C.
Quenching
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 107
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Question:
The purpose of _____ is to refine the grain structure and decrease the residual stress to improve
the machinability.
a. Hardening
b. Annealing
c. Quenching
d. Normalising
ANSWER:
D.
Normalising
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 104
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Question:
To eliminate/reduce residual stresses, steel is subjected to ________ annealing
a. Recrystallization
c. Stress relief
b.
Spherodising d. Full
ANSWER:
c.
Stress Relief
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 102
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Question:
The purpose of ____ annealing is to improve ductility, remove internal stress, enhance magnetic and
electrical properties and refine grain structure
a. Recrystallization
b. Spherodising
c. Stress relief
d. Full
ANSWER:
D.Full
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 99
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Question:
The first stage in the heat removal during quenching is ____
a.
b.
c.
d.
Vapour blanket stage
Vapour transport stage
Liquid cooling stage
Vapour cooling stage
ANSWER:
A. Vapour blanket stage
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 108
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Question:
Hardening is always followed by _____ in order relieve the residual stresses an improve the
ductility and toughness of the hardened steel
a. Heat treatment
b. Annealing
c. Tempering
d. Hardening
ANSWER:
c.Tempering
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 106
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Question:
___ is the process by which the carbon content of the steel is increased
a. Carbonitriding
b. Carburising
c. Cyaniding
d. Nitriding
ANSWER:
b.Carburising
SOLUTION (if problem solving)
References: Engineering Materials and Metallurgy, 2nd Edition
R. Srinivasan
Page 122
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Area of Specialization
Electronics
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(X) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
The condition of equilibrium of a body will remain unchanged if a force acting at a
given point of the rigid body is replaced by a force of the same magnitude and
same direction, but acting at a different point but having the same line of action is
known as __________.
Choices:
a. Torque
c. Moment
ANSWER:
b. Transmissibility
d. Moment Arm
b. Transmissibility
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Classical Mechanics by: Herbert Goldstein, et al (July 2000)
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(X) General Engineering and Applied Science
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QUESTION:
The law that states, “If the resultant force acting on a particle is zero, the particle
will remain at rest (if originally at rest) or will move with constant speed in a
straight line (if originally in motion),” is ____________.
Choices:
a. Newton’s First Law
b. Newton’s Second Law
c. Newton’s Third Law
d. Newton’s Law of Gravitation
ANSWER:
a. Newton’s First Law
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Vector Mechanics for Engineers (3rd Edition)
by: Ferdinand Beer, et al (2001)
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QUESTION:
A force of 500 N forms angles of 600, 450, and 1200, respectively with the x, y and
z axes. Obtained the scalar component of F.
Choices:
a.
b.
c.
d.
F = (205 N) i + (345 N) j + (250 N) k
F = (250 N) i + (354 N) j – (250 N) k
F = (250 N) i + (354 N) j + (250 N) k
F = (205 N) i + (345 N) j – (250 N) k
ANSWER:
b. F = (250 N) i + (354 N) j – (250 N) k
SOLUTION ( IF PROBLEM -SOLVING)
Fx = (500 N) cos 600 = 250 N
Fy = (500 N) cos 450 = 354N
Fz = (500 N) cos 1200 = - 250 N
Therefore; F = (250 N) i + (354 N) j – (250 N) k
Reference: Vector Mechanics for Engineers (3rd Edition)
by: Ferdinand Beer, et al (2001)
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QUESTION:
Which of the following support or connection has two unknowns?
Choices:
a. Roller Support
b. Rocker Support
c. Short Link
d. Hinge Support
ANSWER:
d. Hinge Support
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Vector Mechanics for Engineers (3rd Edition)
by: Ferdinand Beer, et al (2001)
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TEST QUESTIONS
QUESTION:
The unit of spring constant k is
Choices:
a. N/m
b. N – m
c. N – m2
d. kg – m
ANSWER: a. N/m
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Vector Mechanics for Engineers (3rd Edition)
by: Ferdinand Beer, et al (2001)
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Electronics
Please indicate the subject:
(X) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
The stability of equilibrium defined by dV/dA =0 and d2V/dA2 > 0 is called
Choices:
a.
b.
c.
d.
Stable Equilibrium
Marginally Unstable Equilibrium
Unstable Equilibrium
Neutral Equilibrium
ANSWER: a. Stable Equilibrium
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Vector Mechanics for Engineers (3rd Edition)
by: Ferdinand Beer, et al (2001)
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(X) General Engineering and Applied Science
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QUESTION:
What type of unit is a slug?
Choices:
a. Unit of Length
b. Unit of Force
c. Unit of Mass
d. Unit of Time
ANSWER: c. Unit of Mass
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Vector Mechanics for Engineers (3rd Edition)
by: Ferdinand Beer, et al (2001)
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(X) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
Choices:
ANSWER:
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Vector Mechanics for Engineers (3rd Edition)
by: Ferdinand Beer, et al (2001)
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Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
The phenomenon whereby a force is brought to bear on a moving electron or hole
by a magnetic field that is applied perpendicular to the direction of motion. The
force direction is perpendicular to both the magnetic field and the particle motion
directions.
Choices:
a. Skin Effect
ANSWER:
c. Hall Effect
b.
Tesla Effect
c.
Hall Effect
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Material Science and Engineering 7th ed. Callister, page 692
d. Weber Effect
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QUESTION:
The total electrical resistivity of a metal is equal to the sum of temperature-,
impurity-, and cold work-dependent contributions.
Choices:
a. Fick’s Law
ANSWER:
b.
Matthiessen’s rule c.
b. Matthiessen’s rule
SOLUTION ( IF PROBLEM -SOLVING)
Bragg’s law
d. Burger’s Rule
Reference: Title of the book, author and page
Material Science and Engineering 7th ed. Callister, page 675
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IECEP Manila
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
The capacity of a material to absorb energy when it is elastically deformed.
Choices:
a. Frenkel
ANSWER:
d. Resilience
b.
Ductile
c.
Plastic
d. Resilience
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Material Science and Engineering 7th ed. Callister, page 149
Endorsed by:
School Representative
IECEP-Manila Form 1 S.2011
IECEP Manila
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
A single quantum of vibrational or elastic energy.
Choices:
a. phonon
ANSWER:
a. phonon
b.
Photon
c.
quarks
d. leptons
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Material Science and Engineering 7th ed. Callister, page 724
Endorsed by:
School Representative
IECEP Manila
IECEP-Manila Form 1 S.2011 TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
The time-dependent permanent deformation that occurs under stress; for most
materials it is important only at elevated temperatures.
Choices:
a. Creep
ANSWER:
c. Creep
b. Frenkel defect
c.
Plastic deformation
d. Point defect
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Material Science and Engineering 7th ed. Callister, page 238
Endorsed by:
School Representative
IECEP Manila
IECEP-Manila Form 1 S.2011 TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
In mechanical vibration, what do you call the maximum displacement of the
body from its equilibrium position
.
Choices:
a. Wave
b. Oscillation
ANSWER:
c. Amplitude
c.
Amplitude
d. Distance
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Engineering Mechanics, Ferdinand L. Singer, pp 464
Endorsed by:
School Representative
IECEP-Manila Form 1 S.2011
IECEP Manila
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
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
intervals of time.
.
Choices:
a. Amortization
b. Depreciation
ANSWER:
a. Amortization
c.
Annuity
d. Deflation
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Engineering Economy, Matias Arreola, pp.139
Endorsed by:
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IECEP Manila
IECEP-Manila Form 1 S.2011 TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
Which among the crystal system has the least symmetry due to its unequal
unit cell dimensions and angles?
Choices:
a. Biclinic
b. Quadclinic c.
ANSWER:
a. Triclinic
Monoclinic
d. Triclinic
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Fundamentals of Materials Science and Engineering, William D. Callister, Jr.,
pp49
Endorsed by:
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IECEP Manila
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
In Physics, what should be the speed at which an object must travel so that
its mass will increase by 10%
Choices:
a. 0.203c
b. 1.119c c. 0.416c
ANSWER:
c. V = 0.416c or 1.24x108 m/s
d. 0.025c
SOLUTION ( IF PROBLEM -SOLVING)
Relativistic Mass
m = mo/sqrt(1-(V/c)2)
1.1mo = mo/sqrt(1-(V/c)2)
1.12 = 1/(1-(V2/c2))
V=0.416c
Reference: Title of the book, author and page
Engineering Mechanics, Ferdinand L. Singer, pp 464
Endorsed by:
School Representative
IECEP Manila
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
In mechanical vibration, what do you call the maximum displacement of the
body from its equilibrium position
.
Choices:
a. Wave
b. Oscillation
ANSWER:
c. Amplitude
c.
Amplitude
d. Distance
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Engineering Mechanics, Ferdinand L. Singer, pp 464
Endorsed by:
School Representative
IECEP Manila
IECEP-Manila Form 1 S.2011 TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
Name of School
Address
Signature over Printed
Name , Position
Area of Specialization
Electronics Engineeering
Please indicate the subject:
(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
It is a time-dependent elastic behavior of materials.
.
Choices:
a. Anelastic
b. Inelastic
ANSWER:
a. Anelastic
c.
Plastic
d. Non-elastic
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Engineering Mechanics, Ferdinand L. Singer, pp 157
Endorsed by:
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IECEP Manila
IECEP-Manila Form 1 S.2011
TEST QUESTIONS
1. Please Use One Page per Question.
2. Fill-out all needed information.
3. Submissions with incomplete data will not be considered.
PROFILE OF CONTRIBUTOR
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Name , Position
Area of Specialization
Electronics Engineeering
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(x ) General Engineering and Applied Science
( ) Electronics System & Technologies
QUESTION:
It is a device used to measure amount of elongation.
Choices:
a. Tachometer
b. Extensometer
c. Elongonometer
d. Longatometer
ANSWER:
b. Anelastic
SOLUTION ( IF PROBLEM -SOLVING)
Reference: Title of the book, author and page
Engineering Mechanics, Ferdinand L. Singer, pp 149
Endorsed by:
School Representative
IECEP Manila