Question 1
0 Kelvin is equal to:
- 0 °F.
- 0 °C.
- -273,16 °C.
- +273,16 °C.
Basic Refrigeration Theory
CBT 22 questions
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Question 2
During automatic operation of a refrigeration system the starting and stopping of the compressor is usually achieved by which of the following?- Low pressure cut out.
- Thermostatic switch.
- Temperature in the cold room.
- Manual on/off switch.
Question 3
From the following options select those, which may cause the refrigeration system high pressure cut out to operate and stop the compressor?- Loss of condenser coolant.
- Oil carry over.
- Ice on the evaporator coils.
- Overcharge of refrigerant.
Question 4
If a running system regularly requires change of refrigerant, what should be done?- Find the leak and rectify the problem before the system is charged.
- Charge the system, modern refrigerants and cheap and do not harm the environment.
- Change the system, find the leak and rectify the problem.
- Replace the lost refrigerant with nitrogen.
Question 5
Put in the correct words. According to the second law of thermodynamics heat can only transfer naturally from a region of high temperature to a region of ____ unless mechanical work is done on the system.- High pressure.
- Low temperature.
- Equal temperature.
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About this CBT test
Basic Refrigeration Theory is a CBT test with 22 questions and verified answers. Common topics include: refrigeration system, expansion valve, refrigerant, temperature, operation, room, automatic, compressor.
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