Only ____-phase motors are suitable for use with VFDs.

a. one
b. two
c. three
d. four


c. three

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Gasparilla, Florida is overrun with an estimated population of more than 13,000 ____, which are the offspring of three pets released in 1970

a. spiny-tailed iguanas b. African tarantulas c. macaws d. yellow anacondas

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Raising the end of the electrode too high or moving it too far ahead of the molten weld pool can cause ____.

A. the weld pool to harden B. burn-through C. all of the shielding gas to be blown away from the molten weld pool D. slag and metal to be deposited ahead of the weld bead

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Most large engines are cooled by a system that circulates liquid coolant through the engine

Indicate whether the statement is true or false

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An alternator is likely to have about how much mass?

A) 3 kilograms B) 13 kilograms C) 130 grams D) 13 grams

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