When installing voice, video, and data wiring in a house, Articles __________, __________, and 830 of the NEC® contain some requirements that must be followed.
a. 100; 300
b. 430; 440
c. 680, 690
d. 800; 820
d. 800; 820
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Although the ____ compound motor gives a more constant speed at all loads, the motor is somewhat unstable.
A. armature B. shunt C. cumulative D. differential
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The overload relays in machines associated with continuous processing typically activate a(n) _____.
a. alarm circuit b. transformer circuit c. motor circuit d. shut-off circuit
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Identify and explain the formula used to express the frequency of an ac generator.
What will be an ideal response?
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One type of alternating current motor that can use variable voltage for speed control is the ____________________ or AC series motor.
Fill in the blank(s) with the appropriate word(s).
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