NATE A C Exam -1 Questions and Complete Solutions Graded A+
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Course
Nate commercial
Institution
Nate Commercial
Low airflow over a residential split system air conditioning evaporator can cause
A: Liquid flood-back to the compressor
B: A decrease in compression ratio
C: An increase in suction line superheat
D: Oil logging in the evaporator - Answer: A: Liquid flood-back to the compressor
...
NATE A C Exam #1
Questions and
Complete Solutions
Graded A+
Denning [Date] [Course title]
,Low airflow over a residential split system air conditioning evaporator can cause
A: Liquid flood-back to the compressor
B: A decrease in compression ratio
C: An increase in suction line superheat
D: Oil logging in the evaporator - Answer: A: Liquid flood-back to the compressor
Which of the following is the correct sequence of work?
A: Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge the
system.
B: Recover refrigerant, evacuate the system, replace filter core, recharge the system.
C: Attach gauge manifold, evacuate the system, replace filter core, recover refrigerant, recharge the
system.
D: Attach gauge manifold, recharge the system, evacuate the system, replace filter core. - Answer: A:
Attach gauge manifold, recover refrigerant, replace filter core, evacuate the system, recharge the
system.
As the pressure on a liquid is increased, the vaporization temperature of the liquid
A: Decreases
B: Increases
, C: Remains unchanged
D: Varies - Answer: B: Increases
An oil separator must be mounted
A: Level
B: Below the compressor crankcase
C: Above the compressor crankcase
D: In the suction line - Answer: A: Level
Which of the following metering devices controls evaporator pressure?
A: Thermostatic expansion valve
B: Fixed orifice
C: Low side float
D: None of these - Answer: D: None of these
An automatic expansion valve controls evaporator pressure.
The purpose of the external equalizer on a thermostatic expansion valve is
A: To equalize evaporator pressure drop with respect to the TEV
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