The short radius on the inside of the duct ell is called the __________.
A. heel
B. cheek
C. throat
Answer: C
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A 150-hp, 460-volt synchronous motor is to be operated at 80% power factor. What will be the full-load current rating of the motor? Use the accompanying figure
a. 66
b. 81
c. 127
Explain the difference between a positive displacement compressor and a non-positive displacement compressor
What will be an ideal response?
The purpose of replaceable overload heaters in magnetic starters:
A) Match the overload trip point to a specific motor size. B) To prevent condensation by keeping the overload warm. C) Operate the magnetic starter in the event that the coil fails. D) Is to make them more convenient to change.
____ inductors, or inductors without core material, are used for up to 5 millihenries of inductance. They are wrapped on a ceramic or phenolic core.
A. Air-core B. Ferrite and powdered iron core C. Toroid-core D. Laminated iron-core