The two main types of fan drives are

A) Serpentine belt and chain drive B) Magnetic drive and hydrodrive
C) Planetary gear drive and worm gear drive D) Direct drive and belt drive


D

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____________________ forces one contactor to be de-energized before the other one can be energized.

Fill in the blank(s) with the appropriate word(s).

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One method of controlling the output is with small relays, in which the CPU controls the ____.

a. relay coil b. light-emitting diode c. resistor d. action of the timer

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What is the voltage drop across a 2-ohm resistor used in a 12-volt series circuit that is flowing 1.5 amps?

A. 3 volts B. 9 volts C. 12 volts D. 1.5 volts

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What is the most common and versatile diagnostic tool for the technician?

A. Ohmmeter B. Voltmeter C. Circuit fuses D. Digital multimeter

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