Compressor capacity can be controlled by:
A) Voltage or current modulation. B) Discharge valve throttling.
C) Cylinder unloading or hot gas bypass. D) Blocking the discharge gas with a solenoid.
C
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Spool valves are sometimes used as a fluid pressure control device.
Answer the following statement true (T) or false (F)
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A dirty condenser coil can lead to ____.
A. increased efficiency B. reduced efficiency C. reduced head pressure D. increased subcooling
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According to NEMA definitions, which of the following is a type of open motor?
a. Nonventilated b. Explosion-proof c.Weather-protected d.Water-to-air-cooled
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A point of controversy between the preservationists and logging industry is over _____ habitat
a. wildlife c. zebra b. human d. insect
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