Which of the following motors provides constant speed from no-load conditions to full-load conditions?

a. Series DC
b. Squirrel cage induction
c. Synchronous
d. Shunt DC


c. Synchronous

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What is the difference between primary roof drains and secondary roof drains?

What will be an ideal response?

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____________________ supplies water directly to the root zone of the plant

Fill in the blank(s) with correct word

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Barometric dampers are operated by:

A) A small gear motor. B) A pair of large magnetic solenoids. C) A damper motor, pulley, and belt. D) The air pressure difference across the damper.

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All visible edges and contours behind the cutting plane should be shown

Indicate whether the statement is true or false

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