Refrigeration Control Circuits Quiz Pt1

Refrigeration Control Circuits Quiz Pt1

12th Grade

19 Qs

quiz-placeholder

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Refrigeration Control Circuits Quiz Pt1

Refrigeration Control Circuits Quiz Pt1

Assessment

Quiz

Physics

12th Grade

Easy

Created by

Andgel Thomas

Used 6+ times

FREE Resource

19 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of a thermostat in a refrigeration system?

To control the flow of refrigerant in the system

To prevent the compressor from starting too soon after shutting off

To maintain stable temperature conditions in a space

To regulate the flow of electricity in the control circuit

Answer explanation

The purpose of a thermostat in a refrigeration system is to maintain stable temperature conditions in a space.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of thermostat uses mechanical gear to operate a switch for starting or stopping cooling equipment?

Electromechanical thermostat

Thermo disk thermostat

Constant cut in thermostat

Electronic thermostat

Answer explanation

The correct answer is the Electromechanical thermostat, which uses mechanical gear to operate a switch for starting or stopping cooling equipment.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the controller differential in a thermostat?

To minimize the overshoot and undershoot of temperature variations

To maintain the space temperature at an acceptable value

To initiate a corrective action when the control point is above the setpoint

To prevent the compressor from starting too soon after shutting off

Answer explanation

The purpose of the controller differential in a thermostat is to minimize the overshoot and undershoot of temperature variations.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of thermostat uses semiconductors to change their resistance?

Electronic thermostat

Thermo disk thermostat

Electromechanical thermostat

Constant cut in thermostat

Answer explanation

The correct type of thermostat that uses semiconductors to change their resistance is the electronic thermostat.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of a pressure control in HVAC/R?

To maintain stable temperature conditions in a space

To rely on changes in pressure to operate an internal switch

To control the flow of refrigerant in the system

To regulate the flow of electricity in the control circuit

Answer explanation

The function of a pressure control in HVAC/R is to rely on changes in pressure to operate an internal switch, allowing it to regulate the system based on pressure variations.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of a relay in a refrigeration circuit?

To maintain stable temperature conditions in a space

To regulate the flow of electricity in the control circuit

To control the flow of refrigerant in the system

To initiate a corrective action when the control point is above the setpoint

Answer explanation

The purpose of a relay in a refrigeration circuit is to regulate the flow of electricity in the control circuit.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of a defrost time clock in a refrigeration system?

To initiate a defrost cycle to control heaters that melt frost and ice from the evaporator

To maintain the space temperature at an acceptable value

To regulate the flow of electricity in the control circuit

To prevent the compressor from starting too soon after shutting off

Answer explanation

The function of a defrost time clock in a refrigeration system is to initiate a defrost cycle to control heaters that melt frost and ice from the evaporator.

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