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Refrigeration RT/RC Prep Quiz
Topics: All categories in the pool
1: When liquid receivers are used, the liquid refrigerant shall not exceed _______percent of the volume at 90F.
2: Dew point is
3: What is used to check very low pressure?
4: What section governs pressure vessels?
5: A 24 volt transformer with a 240 volt primary can handle how many amps?
6: one BTU equals
7: Where can 50/50 solder be used on?
8: A single pole-double throw switch uses how many wires?(excluding the ground)
9: An electrical circuit has a 208V power supply and draws 47 amps total, What would be the wattage of the circuit
10: Can ammonia be used on domestic system?
11: What is Absolute Zero?
12: Refrigeration devices shall be equipped with a ____ to protect against unexpected pressure due to a malfunction or fire?
13: Which of the following are considered inorganic refrigerants?
14: Which occupancy can ammonia be used in?
15: R-11 has the greatest corrosive effect on
16: The actual expansion curve of compression follows most nearly which one of the following curves?
17: The 4 basic methods of determining whether the proper amount of refrigerant is being introduced into the system are
- sight glass, weight, pressure, and dipstick
- sight glass, weight, paper method, and frost line.
- sight glass, weight, pressure, and frost line
- Buss-eye, weight, pressure, and frost line
18: In an air conditioning system, the unit of total heat energy content in an air/vapor mixture is
19: What must be done to refrigerant pipes before being buried ?(8.10.4)
20: If a purge unit fails on a low pressure chiller, what are the symptoms?
21: A pressure relief should be located at least _______ from windows and doors.
22: If the power element of an expansion valve should lose its charge the valve would
23: Heat is a form of
24: Halogen refrigerants are corrosive to which type of metal?
25: What will occur if the strong solution in an absorption chiller becomes too strong?