The minimum length allowed for driven ground rods under normal conditions is _____.

a. 4'
b. 8'
c. 10'
d. 16'


b. 8'

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As the rotor reaches approximately ____% of synchronous speed, the auxiliary start winding is no longer necessary.

a. 25 b. 50 c. 75 d. 95

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The direct production of an ____ from heat is sometimes referred to as the Seebeck effect.

a. electromagnetic force b. electromotive force c. electroconductive force d. electronic force

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The number of steps to the landing for a short-L stairway is _____

a. two b. two to four c. three d. three to five

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What are the three methods by which a defrost cycle can be terminated?

What will be an ideal response?

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