Practice Quiz Questions

Question 1

The _________ is on the “high side” of the system; the _________ is on the “low side”

Answer 1

Condenser; evaporator

Question 2

The main purpose of the sight glass in a vapor compression refrigeration system is to:

Answer 2

Check for vapor bubbles in the liquid line

Question 3

In which type of system is compressor surging a serious concern?

Answer 3

Centrifugal chiller

Question 4

Heat energy moves within a liquid by:

Answer 4

Convection

Question 5

Just before the expansion valve (on the high side of the system) the refrigerant would be:

Answer 5

High Pressure Liquid

Question 6

What would happen to the refrigerant inside the evaporator if there were no heat source?

Answer 6

Refrigerant liquid would remain a liquid

Question 7

A flooded evaporator will use a _________ to prevent ________ from reaching the compressor.

Answer 7

Surge tank; liquid

Question 8

Heat energy moves within a vacuum by:

Answer 8

Radiation

Question 9

An “indirect vented” refrigeration system means that:
(think brine circuit)

Answer 9

The brine circuit is vented to atmosphere

Question 10

Sensible heat is defined as:

Answer 10

Heat added or removed which causes a change of temperature

Question 11

The water solenoid for a water-cooled condenser will open and supply water to the condenser on a ________ rise.

Answer 11

Pressure rise

Question 12

In an Absorption refrigeration system, what is the refrigerant used?

Answer 12

Water

Question 13

The air/water cooled removes heat from the refrigerant:

Answer 13

Condenser

Question 14

The purpose of an evaporator is to:

Answer 14

Absorb heat into the refrigerant

Question 15

In Alberta, standards for refrigeration are enforced by:

Answer 15

The Alberta Boiler Safety Association

Question 16

The latent heat of vaporization is the amount of heat that must be supplied (without a change in temperature) to change states from:

Answer 16

Liquid to vapor

Question 17

In the condenser a refrigerant is changed from a high pressure ______ to a high pressure _______

Answer 17

Changed from a high pressure gas to a high pressure liquid

Question 18

What may be used to prevent liquid refrigerant from entering the compressor?
hint
(Located between evaporator and the compressor)

Answer 18

Low pressure receiver
Located between the evaporator and the compressor

Question 19

Which of the following systems has liquid refrigerant in the flow returning from the evaporator?

Answer 19

Liquid overfeed