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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Which of the following dog breeds is not used as a guide dog for the blind?
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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