Permanent magnet motors have _____ efficiency than conventional field-wound motors.
A. higher
B. lower
Answer: A
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____ can be used to blow off parts, to apply paint with a spray gun, to power hand tools, or to power an air jack for lifting vehicles.
A. Pressure switches B. Blowby C. Compressed air D. Sludge
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The refrigeration cycle is made possible by the ________ difference, which is maintained by the compressor and metering device
A) temperature B) vapor C) entropy D) pressure
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A plumber is leveling a short run of pipe in a confined area. A precise measurement is not required. The best
tool choice is a _____. a. torpedo level b. spirit level c. transit level d. line level
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In order to make accurate measurements of reference voltages, the voltmeter must have an input impedance of at least:
A. 100 ? B. 1 M? C. 10 M? D. 100 M?
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