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Unit 25 Quiz

Authored by Devell Young

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University

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Unit 25 Quiz
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30 questions

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1.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Which is not a basic component of the compression refrigeration cycle?

Compressor

Condenser

Evaporator

Suction filter

2.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

The two forces that control the EPR valve are the ________.

suction line pressure and the evaporator pressure

evaporator pressure and the valve’s spring pressure

liquid line pressure and the suction line pressure

valve’s spring pressure and the liquid line pressure

3.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

The purpose of the crankcase pressure-regulating valve is to ________.

maintain constant pressure in the crankcase

maintain constant pressure in the evaporator

prevent a compressor from going into a vacuum

prevent a compressor overload condition

4.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Refrigerant relief valves come in two different types, ________.

spring-loaded and electronic

mechanical and one-type

spring-loaded and one-time

electronic and mechanical

5.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

A ________ has a magnetic coil, can be normally open or normally closed, and is frequently used to control fluid flow (liquid or vapor).

evaporator pressure regulator

crankcase pressure regulator

solenoid valve

variable frequency drive

6.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

Pressure switches are used to start and stop electrical current flow to refrigeration components.

True

False

7.

MULTIPLE CHOICE QUESTION

10 mins • 1 pt

A control that can be used as either a low-charge protection or to control space temperature is a ______.

a. low ambient control

b. low-pressure switch

c. thermostat

d. high-pressure switch

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