RETA Book 1 study Questions
Refrigerant absorbs the most heat when____
a. being superheated.
b. being subcooled.
c. changing from a liquid to a vapor.
d. changing from a vapor to a liquid. -Correct Answer ✔ ✔ c.
changing from a liquid to a vapor.
The latent heat of condensation of a substance is the same as
a. the latent heat of evaporation of the substance at the same
pressure.
b. the latent heat of freezing of the substance at the same pressure.
c. the specific heat of the substance.
,d. the heat required to sublimate the substance. -Correct Answer ✔
✔ a. the latent heat of evaporation of the substance at the same
pressure.
Saturated conditions are found ______
a. only in a condenser.
b. only in an evaporator.
c. only in the liquid lines.
d. in both an evaporator and a condenser. -Correct Answer ✔ ✔ d.
in both an evaporator and a condenser.
Flash gas is_____
a. only found in ammonia refrigeration systems.
b. formed in a high pressure receiver.
c. formed in a condenser.
,d. formed at the point of expansion. -Correct Answer ✔ ✔ d.
formed at the point of expansion.
What are the four necessary components of a mechanical
refrigeration
system?
a. Evaporator, condenser, receiver, compressor
b. King Valve, gauges, thermometers, amp meter
c. Expansion device, evaporator, compressor, condenser
d. Evaporator, condenser, King Valve, compressor -Correct Answer ✔
✔ c. Expansion device, evaporator, compressor, condenser
A conventional mechanical refrigeration system is considered
a. an expendable refrigerant system.
b. a closed loop system.
c. an open loop system.
, d. a multi-loop system. -Correct Answer ✔ ✔ b. a closed loop
system.
Superheat is found at which points of a typical system?
a. The compressor suction and the liquid line.
b. The compressor suction and high pressure receiver inlet.
c. The condenser outlet (CD) line.
d. The compressor suction and compressor discharge line. -Correct
Answer ✔ ✔ d. The compressor suction and compressor discharge
line.
Which of the following is NOT a true statement about heat of
compression?
a. It happens to all refrigerant vapors in mechanical refrigeration
systems.
Refrigerant absorbs the most heat when____
a. being superheated.
b. being subcooled.
c. changing from a liquid to a vapor.
d. changing from a vapor to a liquid. -Correct Answer ✔ ✔ c.
changing from a liquid to a vapor.
The latent heat of condensation of a substance is the same as
a. the latent heat of evaporation of the substance at the same
pressure.
b. the latent heat of freezing of the substance at the same pressure.
c. the specific heat of the substance.
,d. the heat required to sublimate the substance. -Correct Answer ✔
✔ a. the latent heat of evaporation of the substance at the same
pressure.
Saturated conditions are found ______
a. only in a condenser.
b. only in an evaporator.
c. only in the liquid lines.
d. in both an evaporator and a condenser. -Correct Answer ✔ ✔ d.
in both an evaporator and a condenser.
Flash gas is_____
a. only found in ammonia refrigeration systems.
b. formed in a high pressure receiver.
c. formed in a condenser.
,d. formed at the point of expansion. -Correct Answer ✔ ✔ d.
formed at the point of expansion.
What are the four necessary components of a mechanical
refrigeration
system?
a. Evaporator, condenser, receiver, compressor
b. King Valve, gauges, thermometers, amp meter
c. Expansion device, evaporator, compressor, condenser
d. Evaporator, condenser, King Valve, compressor -Correct Answer ✔
✔ c. Expansion device, evaporator, compressor, condenser
A conventional mechanical refrigeration system is considered
a. an expendable refrigerant system.
b. a closed loop system.
c. an open loop system.
, d. a multi-loop system. -Correct Answer ✔ ✔ b. a closed loop
system.
Superheat is found at which points of a typical system?
a. The compressor suction and the liquid line.
b. The compressor suction and high pressure receiver inlet.
c. The condenser outlet (CD) line.
d. The compressor suction and compressor discharge line. -Correct
Answer ✔ ✔ d. The compressor suction and compressor discharge
line.
Which of the following is NOT a true statement about heat of
compression?
a. It happens to all refrigerant vapors in mechanical refrigeration
systems.
