Evaporative emission control systems operate on low pressure measured in inches of water (inches of H2O). One psi (pound per square inch) is equal to how many inches of water?

A) 1
B) 28
C) 18
D) 10


Answer: B) 28

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When used for short circuit protection of motor branch circuits, which of the following must be adjustable and used in conjunction with combination motor starters?

a. Motor short circuit protectors b. Multi-motor branch circuits c. Instantaneous trip circuit breakers d. Circuit interrupters

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?Portable welders often have _____ or ______ plug outlets.

A. ?110-volt or 220-volt B. ?110-volt or 120-volt C. ?12-volt DC or 24-volt DC D. ?12-volt AC or 24-volt AC

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What part should be replaced when servicing a wheel bearing on a non-drive wheel?

A) The bearing cup B) The cotter key C) The grease seal D) Both the grease seal and the cotter key

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To rectify is to convert dc to pulsating ac

Indicate whether the statement is true or false

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