A three-phase synchronous motor has three stator windings that are _____
a. 45° apart
b. 90° apart
c. 120° apart
d. 180° apart
c
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Which of the following will shorten the life of a filament in an incandescent lamp?
a. Operating at cooler temperatures b. Operating at warmer temperatures c. Frequently turning it on and off d. The use of a photosensor
The maximum value of a short circuit current from line-to-neutral (grounded) _____.
a. is 120V b. is 240V c. will vary depending on the distance from the source to the fault d. is the maximum capacity of the system
The supratidal and intertidal areas are below the water level
Indicate whether the statement is true or false
In a switch-mode power supply the role of the inductor is
A) to produce a constant load current B) surge protection C) to function as a low-pass filter D) to function as a high-pass filter