1. A silver bar 0.125 meter long is subjected to a temperature change from 200C to 100C. What will be the length of the bar after the temperature?
A. 0.124764 meter (MY ANSWER)
B. 0.00023635 meter
C. 0.00002363 meter
D. 0.0000189 meter
2. When the molecules in a body move with increased speed, it's possible that the body will change from a
A. gas to a liquid
B. gas to a solid
C. liquid to a solid
D. liquid to a gas (MY ANSWER)
3. If the absolute temperature of a gas is 600 K, the temperature in degrees Celsius is
A. 273 C
B. 327 C (MY ANSWER)
C. 705 C
D. 873 C
4. The main purpose of the turbine in the turboject engine is to
A. drive the compressor (MY ANSWER)
B. compress the air
C. increase the velocity of the exhaust gases
D. reduce the temperature of the exhaust gas
5. 20 cubic inches of a gas with an absolute pressure of 5 psi is compressed until its pressure reaches 10 psi. What is the new volume of the gas? (Assume that there's no change in temperature)
A. 5 cubic inches
B. 10 cubic inches (MY ANSWER)
C. 40 cubic inches
D. 100 cubic inches
6. Unlike other kinds of liquids, volatile liquids
A. ignite readily at a relatively low temperature
B. flow rapidly at a relatively low temperature
C. evaporate rapidly at a relatively low temperature (MY ANSWER)
D. freeze readily at a relatively high temperature
7. A temperature of 273 K is the temperature at which water
A. boils
B. lacks any moving molecules
C. evaporates
D. freezes (MY ANSWER)
8. Which of the following takes place in the combustion chamber of a gas turbine engine?
A. Fuel oil is store with sufficient pressure
B. Fuel oil is mixed with a proper portion of compressed air
C. A mixture of fuel oil and compressed air is ignited (MY ANSWER)
D. Gases are cooled to a desired temperature
9. How much heat energy is required to raise the temperature of 5 kilograms of coal from 20 C to 220 C?
A. 314 J
B. 6,573 J
C. 1,314,718 J (MY ANSWER)
D. 4,187,000 J
10. One degree Celsius indicates the same temperature change as
A. one degree Fahrenheit
B. one kelvin (MY ANSWER)
C. 5/9 degree Fahrenheit
D. 9/5 kelvin
11. A quantity of a gas has an absolute pressure of 400 kPa and an absolute temperature of 100 degrees kelvin. When the temperature of the gas is raised to 235 degrees kelvin, what is the new pressure of the gas? (Assume that there's no change in volume)
A. 1.702 kPa
B. 3.636 kPa
C. 510 kPa
D. 854.46 kPa (MY ANSWER)
12. A temperature of 20 C is equivalent to approximately
A. -6 F
B. 32 F
C. 68 F (MY ANSWER)
D. 136 F
13. If the absolute pressure of a gas is 550.280 kPa, its gage pressure is
A. 101.325 kPa
B. 277.280 kPa
C. 448.955 kPa (MY ANSWER)
D. 651.605 kPa
14. Which one of the following substances is a liquid fuel used in rocket engines?
A. Liquid Oxygen (MY ANSWER)
B. Ammonia
C. Potassium perchlorate
D. Codium nitrate
15. The density of water is the greatest at a temperature of
A. 0 K
B. 4 K
C. 273 K
D. 277 K (MY ANSWER)
16. In a gasoline engine, the area in the cylinder head where the air-and-fuel mixture is burned is called the
A. piston
B. cylinder
C. combustion chamber (MY ANSWER)
D. intake value
17. How much heat is required to convert 0.3 kilogram of ice at 0 C to water at the same temperature?
A. 100,375 J (MY ANSWER)
B. 167,292 J
C. 334,584 J
D. 450,759 J
18. Which of the following cools the air in a household refrigerator?
A. Reduction of the air temperature due to condensation of the gaseous refrigerant
B. The transfer of heat from the air to the compressor due to expansion of a gaseous refrigerant
C. The transfer of heat to the evaporator due to compression of the liquid refrigerant
D. Absorption of the heat from the air due to evaporation of the liquid refrigerant (MY ANSWER)
19. Which one of the following temperatures is equal to 5 C?
A. 0 K
B. 41 K
C. 278 K (MY ANSWER)
D. 465 K
20. Liquid alcohol will change to vapor when its temperature reaches the
A. boiling point (MY ANSWER)
B. fusing point
C. freezing point
D. melting point
21. A temperature of 200 F is equivalent to approximately
A. 37.8C
B. 93.3C (MY ANSWER)
C. 232C
D. 840C
22. A quantity of gas has a volume of 0.20 cubic meter and an absoloute temperature of 333 degrees kelvin. When the temperature of the gas is raised to 533 degrees kelvin, what is the new volume of the gas? (Assume that there's no change in pressure)
A. 0.0006 m3
B. 0.2146 m3
C. 0.2333 m3
D. 0.3198 m3 (MY ANSWER)
23. Which of the following statements correctly describes the position of the intake and exhaust values during most of the power stage in a four-cycle gas engine?
A. The intake valve is closed and the exhaust valve is open
B. The intake valve is open and the exhaust valve is closed
C. Both the intake valve and the exhaust valve are closed (MY ANSWER)
D. Both the intake valve and the exhaust valve are open
24. What is the length of an aluminum rod at 65 C if its length at 15 C is 1.2 meters?
A. 0.001386 meter
B. 0.00180 meter
C. 1.201386 meters (MY ANSWER)
D. 1.214855 meters
25. Heat from burning fuel warms the walls of the firebox section of the furnace in
A. a hot-air heating system (MY ANSWER)
B. an evaporation system
C. a compressor compartment
D. a hot-water heating system
Please check my answers!
1.
A
Correct
2.
D
Correct
3.
B
Correct
4.
B
A
PAGES 92,93
5.
C
B
PAGES 35,36
6.
C
Correct
7.
D
Correct
8.
C
D
PAGE 88
9.
C
Correct
10.
B
Correct
11.
D
Correct
12.
C
Correct
13.
C
Correct
14.
A
B
PAGE 93
15.
D
Correct
16.
C
Correct
17.
A
Correct
18.
D
Correct
19.
C
Correct
20.
A
Correct
21.
B
Correct
22.
D
Correct
23.
C
Correct
24.
C
Correct
25.
A
Correct
i know this was a while ago but for anyone else that needs answer here you go i got a 84