Chapter 11 Engineering Fundamentals:
An Introduction to Engineering
1. Temperature is a fundamental dimension.
a. True
b. False
2. Which of the following material properties varies with temperature?
a. density
b. viscosity
c. electrical resistance
d. all of the above
Analysis:
3. The physical quantity that provides a measure of molecular activity and the internal energy of
an object is
a. density.
b. temperature.
c. viscosity.
d. specific weight.
Analysis:
4. The physical quantity that quantifies or provides a measure of how active molecules are on a
microscopic level is
a. density.
b. temperature.
Engineering Fundamentals, 5th ed. Chapter 11
Saeed Moaveni
c. viscosity.
d. specific weight.
5. Temperature is a macroscopic measurement of a microscopic phenomenon.
a. True
b. False
6. Thermometers use varying physical properties to measure temperature. Which of the
following variable physical properties are utilized in thermometers?
a. density
b. electrical resistance
c. color
d. all of the above
Analysis:
7. A temperature-measuring device that consists of two dissimilar metals is known as a
a. Thermocouple.
b. Thermistor.
c. Thermojunction.
d. RTD.
Engineering Fundamentals, 5th ed. Chapter 11
Saeed Moaveni
Analysis:
8. A temperature-measuring device composed of a semiconductor material is known as a
a. Thermocouple.
b. Thermistor.
c. Thermojunction.
d. RTD.
Analysis:
9. Convert
F374
to Celsius.
________ °C
10. Convert
C37
to Fahrenheit.
________ °F
11. Convert
F374
to Kelvins.
________°C
12. Convert
C37
to Kelvins.
________ K
13. Which of the following temperature scales is known as an absolute scale?
a. Fahrenheit
b. Celsius
c. Centigrade
d. Kelvin
Analysis:
14. Which of the following temperature scales is known as a relative scale?
a. Fahrenheit
b. Rankine
c. Kelvin
d. None of the above
Analysis:
15. What does P stand for in the following equation?
mRTPV
a. Pounds
b. Pressure
c. Power
d. Permeability
16. What does V stand for in the following equation?
mRTPV
a. Volume
b. Velocity
c. Voltage
d. Viscosity
Analysis:
17. What does T stand for in the following equation?
mRTPV
a. Time
b. Period
c. Torque
d. Temperature
Analysis:
18. When using the ideal gas law,
mRTPV
, what system of units should you use when
entering temperature values?
a. Fahrenheit
b. Celsius
Engineering Fundamentals, 5th ed. Chapter 11
Saeed Moaveni
c. Kelvin
d. any of the above
Analysis:
19. The temperature in this room is
F72
. The temperature outside the building is
F20
. What
is the temperature difference in Kelvins?
a.
K52
b.
K11
c.
K20
d.
K29
Analysis:
20. The temperature in this room is
F72
. The temperature outside the building is
F20
. What
is the temperature difference in degrees Celsius?
a.
C52
b.
c.
C20
d.
C29
Analysis:
21. A
1
temperature difference in Celsius is equal to a
1
temperature difference in Fahrenheit.
a. True
b. False
22. A
1
temperature difference in Celsius is equal to a
1
temperature difference in Kelvin.
a. True
b. False
23. Which of the following is NOT a mode of heat transfer?
a. transposition
b. convection
c. radiation
d. conduction
Analysis:
24. On its own, heat flows from hot objects to cold objects.
a. True
b. False
25. On its own, temperature flows from hot objects to cold objects.
a. True
b. False
26. What does Btu stand for?
a. British temperature unit
b. British thermal unit
c. Binomial theorem utility
d. Binary temperature unit
Analysis:
27. The amount of heat required to raise the temperature of
m
lb1
of water by
F1
is known as a
a. Btu.
b. calorie.
c. Calorie.
d. Joule.
Analysis:
28. The amount of heat required to raise the temperature of
g1
of water by
C1
is known as a
a. Btu.
b. calorie.
c. Calorie.
d. Joule.
Analysis:
29. What is the SI unit of energy?
a. calorie
b. Watt
c. Btu
d. Joule
Analysis:
30. The mode of heat transfer that occurs when a temperature difference exists in a medium is
known as
a. conduction.
b. convection.
c. radiation.
d. none of the above.
Analysis:
31. The mode of heat transfer that occurs when a fluid in motion comes into contact with a solid
surface whose temperature differs from the moving fluid is known as
a. conduction.
b. convection.
c. radiation.
d. none of the above.
Analysis:
Engineering Fundamentals, 5th ed. Chapter 11
Saeed Moaveni
32. The mode of heat transfer that occurs through electromagnetic waves is known as
a. conduction.
b. convection.
c. radiation.
d. none of the above.
Analysis:
33. When you touch a hot stove with your finger you get burned by the heat transferred to your
finger. What mode of heat transfer is responsible for this?
a. conduction.
b. convection.
c. radiation.
d. none of the above.
Analysis:
34. Before taking a bite of a piece of hot pizza you blow on it to cool it off by transferring heat
out of the pizza. What mode of heat transfer is responsible for this?
a. conduction
b. convection
c. radiation
Engineering Fundamentals, 5th ed. Chapter 11
Saeed Moaveni
d. none of the above
Analysis:
35. If you stay out too long at the beach you may get a sunburn as a result of too much heat being
transferred to your skin. What mode of heat transfer is responsible for this?
a. conduction
b. convection
c. radiation
d. none of the above
Analysis:
36. The physical measurement that is intended to account for the combined effect of wind speed
and air temperature is known as
a. dew point.
b. ambient conditions.
c. wind chill index.
b. relative temperature.
Analysis:
37. A unit commonly used to express the metabolic rate for an average person under sedentary
conditions is called
a.
avg
metab
b.
avg
mr
c.
met
d.
msed
Analysis:
38. A unit that is generally used to express the insulating value of clothing is called
a.
clo
.
b.
ciu
.
c.
insc
.
d.
clo
.
Analysis:
39. In general, as the temperature of a material is increased, the material’s length will
a. increase.
b. decrease.
c. remain the same.
Analysis:
40. In general, as the temperature of a material is increased, the material’s volume will
a. increase.
b. decrease.
c. remain the same.
Analysis:
41. The physical quantity that provides a quantitative way to show how much thermal energy is
required to raise the temperature of an object by a certain amount is
a. thermal conductivity.
b. specific heat.
c. specific weight.
d. density.
Analysis:
42. The term that is used to quantify the amount of energy that is released when a unit mass or a
unit volume of fuel is burned is known as
a. heating value.
b. specific heat.
c. specific mass.
d. specific volume.
Analysis:
43. The energy released by fuel when the combustion by-products include water in liquid form is
known as the
a. higher heating value.
b. lower heating value.
c. all of the above
d. none of the above
44. The energy released by fuel when the combustion by-products include water in vapor form is
known as the
a. higher heating value.
b. lower heating value.
c. all of the above
d. none of the above
Analysis:
45. A simple procedure commonly used to estimate monthly and annual energy consumptions to
heat a building is
a. degree days.
b. heating days.
c. temperature days.
d. energy days.