CDC 3E151P: Trivia Quiz On Heating, Ventilation And Refrigeration!
Welcome to the CDC 3e151p trivia Quiz on heating, ventilation, and Refrigeration. This course teaches you how to store food and maintain heat in different situations, considering one would not know where they are posted or would end up. Take it up and get to see what your chances of survival are even batting camp. All the best in the exams!
- 1.What type of heat when added to a substance causes a measured temperature change without a change of state?
- A.
Latent
- B.
Specific
- C.
Sensible
- D.
Generic
- 2.In which two parts of a refrigeration system does a pressure change take place?
- A.
Condenser and evaporator
- B.
Compressor and evaporator
- C.
Condenser and metering device
- D.
Compressor and metering device
- 3.What is the line to inlet relationship of refrigerant vapor travel as it leaves the evaporator?
- A.
Suction to condenser
- B.
Suction to compressor
- C.
Discharge to condenser
- D.
Discharge to compressor
- 4.Which processes take place inside the condenser?
- A.
Desuperheating and compression
- B.
Desuperheating and condensing
- C.
Vaporization and desuperheating
- D.
Vaporization and condensing
- 5.The reciprocating refrigeration compressor is designed to remove
- A.
Vapor refrigerant from the condenser and decrease the pressure
- B.
Vapor refrigerant from the evaporator and increase the pressure
- C.
Liquid refrigerant from the condenser and increase the pressure
- D.
Liquid refrigerant from the evaporator and increase the pressure
- 6.Which component is installed at the inlet of the evaporator?
- A.
Metering device
- B.
Accumulator
- C.
Compressor
- D.
Condenser
- 7.In which major component does absorbed heat cause liquid refrigerant to boil?
- A.
Metering device
- B.
Compressor
- C.
Condenser
- D.
Evaporator
- 8.Which major component is considered to be the “heart” of the refrigeration system?
- A.
Metering device
- B.
Compressor
- C.
Evaporator
- D.
Condenser
- 9.Which refrigeration compressor is equipped with pistons and connecting rods?
- A.
Screw
- B.
Scroll
- C.
Centrifugal
- D.
Reciprocating
- 10.Which type piston can suction gas pass through?
- A.
Plug
- B.
Trunk
- C.
Plate
- D.
Forged
- 11.How does the rotary compressor compress the refrigerated vapor?
- A.
Rotating action
- B.
Squeezing action
- C.
Increasing the volume
- D.
Decreasing the pressure
- 12.What type of rotary compressor has the blade set into the cylinder?
- A.
Multiblade
- B.
Movable blade
- C.
Stationary blade
- D.
Eccentric roller blade
- 13.Which compressor type is used with refrigerants that have a large gas volume?
- A.
Recipricating
- B.
Centrifugal
- C.
Screw
- D.
Scroll
- 14.Which type of compressor uses an orbiting motion for compression?
- A.
Reciprocating
- B.
Rotary
- C.
Screw
- D.
Scroll
- 15.Heat that is picked up in the refrigeration system is rejected at the
- A.
Condenser
- B.
Evaporator
- C.
Compressor
- D.
Metering devices
- 16.The advantage of an air-cooled condenser is
- A.
Greater operating cost
- B.
Higher head pressure
- C.
Fans that can become noisy
- D.
Less maintenance
- 17.The disadvantage of water-cooled condensers is
- A.
Lower head pressure
- B.
High heat transfer.
- C.
Compactness
- D.
Higher cost
- 18.Which type of water-cooled condenser has removable heads that allow the tubes to be cleaned out with a revolving brush?
- A.
Tube-within-a-tube.
- B.
Shell-and-tube.
- C.
Shell-and-coil.
- D.
Double-tube.
- 19.The thermostatic expansion valve maintains a fully active evaporator by
- A.
Reducing heat load
- B.
Enhancing condensation.
- C.
Maintaining the proper amount of superheat.
- D.
Maintaining the proper amount of subcooling.
- 20.Complete vaporization in an evaporator occurs at point
- A.
C
- B.
G
- C.
S
- D.
V
- 21.What type of thermostatic expansion valve has a bulb that is charged with fluid that is different from the refrigerant in the system?
- A.
Gas
- B.
Cross
- C.
Liquid
- D.
Special
- 22.What type of thermostatic expansion valve has a charged sensing bulb that presents the danger of flood-back?
- A.
Gas
- B.
Cross
- C.
Liquid
- D.
Special
- 23.To create the required pressure drop, the capillary tube uses a designed
- A.
Reactance
- B.
Resistance
- C.
Flow increase
- D.
Pressure increase
- 24.How is the capillary tube in a system affected by the refrigerant charge?
- A.
The refrigerant charge is critical
- B.
The refrigerant pressure can fluctuate.
- C.
The system can take extra refrigerant.
- D.
The system can take a less amount of refrigerant.
- 25.The direct-expansion evaporator picks up or absorbs heat directly from the
- A.
Outside air
- B.
Conditioned space
- C.
Primary refrigerant
- D.
Secondary refrigerant
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