Which is the most expensive method of coupled shaft alignment initially?
A. dial indicator
B. reverse dial indicator
C. dial caliper
D. laser
Answer: D
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A bolt that requires a 1/2 inch wrench to rotate is usually what size when measured across the threads?
A) 7/16 inch B) 1/2 inch C) 3/8 inch D) 5/16 inch
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________ light can be used inside a duct system to kill mold, fungus, bacteria, and other living contaminants
A) Solar B) Incandescent C) Infrared D) Ultraviolet
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What type of device is used in a typical idle air control?
A) Pulsator-type actuator B) Solenoid C) DC motor D) Stepper motor
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The contacts of a current starting relay are:
A) Normally closed. B) Normally open. C) Modulating. D) Either normally open or normally closed depending upon the compressor.
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