ACR-104 Unit 24

ACR-104 Unit 24

28 Qs

quiz-placeholder

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ACR-104 Unit 24

ACR-104 Unit 24

Assessment

Quiz

others

Medium

Created by

Timothy McIntyre

Used 4+ times

FREE Resource

28 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The following is a function of an expansion device: ____.
All of the above.
produce a reduction in the pressure on the liquid refrigerant
regulate the flow of refrigerant into the evaporator
lower the boiling point of the refrigerant far enough below the temperature of the load to get the needed heat transfer rate

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A thermostatic expansion valve meters refrigerant flow to the evaporator based on the ____.
evaporator suction line superheat
rate of liquid vaporization
external equalizer pressure
All of the above.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a thermostatic expansion valve's thermal bulb came loose from the suction line at the outlet of the evaporator, which of the following could result?
All of the above are correct.
The bulb pressure would increase and the thermostatic expansion valve would open.
The superheat in the evaporator would decrease.
The evaporating pressure and the compressor’s suction pressure would increase.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The TXV sensing bulb is mounted ____.
on the suction line between the evaporator and the compressor
on the liquid line between the condenser and the TXV
at the inlet to the condenser
on the compressor discharge line

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The cross liquid charge bulb at the TXV contains fluid that ____.
has different characteristics from the system fluid
has similar characteristics to the system fluid to prevent liquid refrigerant from entering the suction line
causes the valve to stay open during the off cycle
follows the system’s pressure-temperature relationship

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the load on the evaporator increases, the TXV ____.
increases the flow of refrigerant
decreases the flow of refrigerant
maintains constant head pressure
decreases the pressure drop across the evaporator

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If the thermal bulb assembly develops a leak, what will occur?
The bulb pressure will reduce and the valve will close.
All of the system's refrigerant will leak out.
The valve will open to allow more refrigerant to flow.
It will have no effect on system operation.

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