Why is a “Y” valve used on a high pressure oil system on a compressor rack?
a. To reduce the oil pressure from high discharge pressure to crankcase pressure.
b. To increase oil pressure from crankcase pressure to discharge pressure.
c. To distribute oil equally to all compressors on a compressor rack.
a. To reduce the oil pressure from high discharge pressure to crankcase pressure.
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What is the purpose of an ice thickness probe on a cubed-ice machine?
a. It initiates and terminates defrost. b. It maintains proper ice cube temperature. c. It controls the dimensions of the ice cube. d. It prevents premature breaking of ice cube sheets.
Sludge is produced when moisture, acid, and ____________________ are present in the system.
Fill in the blank(s) with the appropriate word(s).
A transistor is controlled by the polarity and current at ________
A) The collector B) The emitter C) The base D) Both A and B
____ is the word used to describe something that seems pleasing to us.
A. Synectic B. Technical C. Creative D. Aesthetic