How deep should the condensate drain trap be?
A) 1 inch deep B) 6 inches deep C) 4 inches deep D) 12 inches deep
[Ques. 2] What specification designates a gauge with an accuracy of 3 for the first third of the scale, 2 for the middle third, and 3 for the final third of their scale?
A) 3-2-2 B) 2-3-2 C) 2-3 D) 3-2-3
[Ques. 3] The purpose of the trap in a condensate drain is to:
A) Ensure that some water is always standing in the evaporator drain pan.
B) Offset the negative pressure on the drain, which can prevent the water from draining.
C) Provide a place for coil slime to collect so that is can be easily cleaned out.
D) Keep snakes and insects from crawling up the drain into the coil.
[Ques. 4] The function of the compressor in the refrigeration cycle is to:
A) Lower the pressure and temperature of the refrigerant.
B) Regulate the refrigerant flow.
C) Filter the refrigerant.
D) Raise the pressure and temperature of the refrigerant.
[Ques. 5] Bourdon tubes work by:
A) Straightening on a rise in pressure and curling on a fall in pressure.
B) Twisting to the right on a rise in pressure and twisting to the left on a fall in pressure.
C) Vibrating at higher frequencies for higher pressures and lower frequencies for lower pressures.
D) Curling on a rise in pressure and straightening on a fall in pressure.
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