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8 Cards in this Set
- Front
- Back
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Which of the following pipe joints should be used for high pressure 1 1/4 inch or smaller piping? 1) Glued 2) Screwed 3) Soldered 4) Flared 5) Welded |
Screwed |
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Emergency discharge is used to counter which of the following problems? 1) Toxic refrigerant leaks 2) Dangerously low system pressures 3) All of the above 4) Combustion of flammable refrigerants 5) Dangerously high system pressures |
Dangerously high system pressures |
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As per current code, all refrigeration systems containing more than 2.72 kg of refrigerant shall have stop valves installed at the following locations except the: 1) Outlet of each condensing unit 2) Discharge of each compressor 3) Suction of each compressor 4) Inlet of each liquid receiver 5) Inlet of each condensing unit |
Inlet of each liquid receiver |
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As per current code, refrigerant emergency discharge to atmosphere shall not be less than a radius of _____ from any window ventilation opening or exit in any building. 1) 7.6 m 2) 4 m 3) 10 m 4) 6.5 m 5) 4.6 m |
7.6 m |
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A pressure relief device on a refrigeration system shall have sufficient capacity to prevent the pressure in the pressure vessel from rising more than _____ above the setting of the pressure relief device. 1) 10% 2) 20% 3) 50% 4) 25% 5) 15% |
10% |
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A simple trap located in the suction line before the compressor that collects liquid, where it evaporates and returns to the compressor as a gas is called: 1) An accumulator 2) An oil separator 3) A stop valve 4) A distributor 5) A strainer-drier |
An accumulator |
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As per current code a pressure gauge, when permanently installed on the high side of a refrigeration system, shall be constructed for at least _____ times the design pressure. 1) 1.1 2) 1 3) 1.2 4) 1.5 5) 2 |
1.2 |
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Which of the following statements about refrigeration pressure gages is true? 1) Dials on refrigeration pressure gages do not indicate saturation temperature 2) They indicate pressures and corresponding temperatures in a system 3) Only one pressure gage is required for each system 4) Permanently installed pressure gages shall be constructed for at least 1.5 times the design pressure 5) Pressure gage will not work if the system is equipped with pulsation dampeners |
They indicate pressures and corresponding temperatures in a system |
