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Colomboy87 Colomboy87
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6 years ago
A thermostatic expansion valve system operating with a refrigerant undercharge will have:
 
  A) A low system subcooling. B) A low superheat.
  C) A high system subcooling. D) Higher-than-normal compressor amp draw.


[Ques. 2] This test instrument reads current in an electrical circuit.
 
  A) Oscilloscope B) Voltmeter C) Ohmmeter D) Ammeter


[Ques. 3] What type of fuses should be used with air-conditioning systems?
 
  A) One-time fuses B) Slow blow fuses
  C) Copper tubing cut to the size of a fuse D) Rapid blow fuses


[Ques. 4] Before checking a system's operating superheat, the technician should first check:
 
  A) The compressor contactor. B) The condenser subcooling.
  C) The evaporator airflow. D) The outdoor wet-bulb temperature.


[Ques. 5] How is the minimum circuit ampacity for an air-conditioning condensing unit calculated?
 
  A) (Compressor amps + fan amps)  1.25 B) (Compressor amps  1.25 ) + fan amps
  C) By the compressor locked rotor amps (LRA) D) Compressor amps + fan amps
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test1234test1234
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6 years ago
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Colomboy87 Author
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#2
6 years ago
Thank you very much!!!
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