When an electric arc occurs in air, gas molecules in the air ____.

A. become polarized
B. become ionized
C. form dimers
D. start a chain reaction


Answer: B

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Explain why the specifications are important to electricians.

What will be an ideal response?

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A. German Shepherd B. Labrador C. Retrievers D. Irish Setter

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End mills cut on their primary clearance

Indicate whether the statement is true or false

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When the coil of S contactor energizes, all S contacts ____.

A. retract B. change position C. de-energize D. remain in position

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