HVAC lvl 2 Compressors 03302 (25 Questions) Test with Verified Solutions
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HVAC lvl 2 Compressors 03302
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HVAC Lvl 2 Compressors 03302
HVAC lvl 2 Compressors 03302 (25 Questions) Test with Verified Solutions
Floodback happens when what enters the crankcase of the compressor?
A. Water
B. Liquid refrigerant
C. Vapor refrigerant
D. Acid - Answer-B. Liquid refrigerant
What component helps protect the compressor from f...
HVAC lvl 2 Compressors 03302 (25
Questions) Test with Verified
Solutions
Floodback happens when what enters the crankcase of the compressor?
A. Water
B. Liquid refrigerant
C. Vapor refrigerant
D. Acid - Answer-B. Liquid refrigerant
What component helps protect the compressor from floodback?
A. Oversized expansion valve.
B. Crankcase heater
C. Motor burn out switch.
D. Suction line. - Answer-B. Crankcase heater
What value is used when adjusting the CPR so that the compressor amp draw does not
exceed it?
A. MCC
B. TENV
C. ACR
D. RLA - Answer-D. RLA
Current imbalance between any two legs of a three phase motor should not exceed.
A. 2%
B. 4%
,C. 8%
D. 10% - Answer-D. 10%
During single phasing, what will the remaining two phases current increase to?
A. Half the normal running current
B. 1-1/2 times the normal running current
C. 4 times the normal running current
D. Twice the normal running current - Answer-B. 1-1/2 times the normal running current
The internal line break overload is often used in...
A. Single-phase hermetic compressor
B. Triple-phase hermetic compressor
C. Semi-hermetic compressor.
D. Open drive compressor - Answer-Single-phase hermetic compressor
High pressure and low pressure switches are usually wired...
A. In a delta configuration
B. In parallel with the contactor coil
C. To the evaporator coil
D. In series with the contactor coil - Answer-D. In series with the contactor coil
On which leg of a three-phase compressor should total compressor current be
measured?
A. Common
B. Neutral
C. Run
D. It doesn't matter - Answer-D. It doesn't matter
Which compressor type has the motor separated from the compressor?
, A. Open Drive
B. Scroll
C. Rotary
D. Welded hermetic - Answer-A. Open Drive
On which leg of a single-phase motor should total compressor current be measured?
A. Neutral
B. Start
C. Run
D. Common - Answer-D. Common
When is a technician most likely to see foaming in an oil-level site glass?
A. When the compressor shuts down
B. Just before the compressor starts
C. When the compressor starts
D. After several minutes of operating time - Answer-C. When the compressor starts
If a systems refrigerant lines are long...
A. The compressor may not be able to complete a pump-down cycle
B. The compressor cannot overcome the pressure drop
C. More time should be allowed between compressor starts
D. The system pressures will never equalize - Answer-A. The compressor may not be
able to complete a pump-down cycle
Refrigerant lines that are buried underground can cause...
A. Copper tubing to last only several years
B. The pressure to drop significantly
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