Gears are rugged and durable and can transmit power with up to _____ efficiency with long service life.
A. 80%
B. 90%
C. 98%
D. 100%
E. none of the above
Answer: C
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What is the accumulation of deposits on the surfaces of processing equipment?
A. Scale B. Erosion C. Corrosion D. Fouling
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A metal mesh sling should be discarded if abrasion has caused a _____ percent reduction of wire diameter.
a. 5 b. 10 c. 25 d. 30
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In a closed-loop system, the plastic water pipes that are buried in the Earth are called ____.
A. ground loops B. thermal loops C. water loops D. both a and c
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An Open circuit system differs from a Closed circuit system mainly by:
a. Having the pump send its output to a directional control valve b. Having the pump send its output to tank c. Having the pump output send its output directly to an actuator d. Having a relief valve on the pump
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