HVAC 3

HVAC 3

University

25 Qs

quiz-placeholder

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HVAC 3

HVAC 3

Assessment

Quiz

Life Skills

University

Hard

Created by

Seth Figler

Used 25+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A noisy compressor is being discussed. Technician A says that the air conditioning system could be low on lubricating oil. Technician B says that the system could be overcharged. Which technician is correct?

Technician A only

Technician B only

Both Technicians A and B

Neither Technician A nor B

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Both pressure gauge needles are oscillating rapidly. Which component is the most likely cause?

The compressor (reed valves)

The orifice tube (clogged)

The expansion valve (stuck closed)

The drier (desiccant bag is saturated with moisture)

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A service technician is replacing a water (coolant) pump. Technician A says that the used coolant should be properly disposed of or kept for recycling. Technician B says that the used coolant should be reused to refill the cooling system after the repair is completed. Which technician is correct?

Technician A only

Technician B only

Both Technicians A and B

Neither Technicians A nor B

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A customer complained of lack of heat from the heater. A check of the cooling system shows that the upper radiator hose is not getting hot. Technician A says that the thermostat may be defective (stuck open). Technician B says that the cause could be a defective (always engaged) thermostat cooling fan. Which technician is correct?

Technician A only

Technician B only

Both Technicians A and B

Neither Technicians A nor B

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A lack of heat from the heater is being discussed. Which is the most likely cause?

A partially clogged radiator

Hoses reversed to the heater core

A partially clogged heater core

A defective water pump

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The temperature gauge approaches the red part of the temperature gauge (260°F. or 127°C.) if driven at slow speeds but does not overheat if driven at highway speeds. What is the most likely cause?

Low coolant level

Incorrect antifreeze/water mixture

Defective water (coolant) pump

Inoperative cooling fan

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A "pop" is heard from the radio speakers occasionally when the defroster of air conditioning is selected. Technician A says that the compressor clutch clamping diode may be blown. Technician B says that the air conditioning compressor clutch may have a poor electrical ground. Which technician is correct?

Technician A only

Technician B only

Both Technicians A and B

Neither Technician A nor B

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