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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____ are formed from flat cold-rolled pieces of carbon steel.

A. Tensile structures B. Cable nets C. Light-gauge structural steel shapes D. Tensioned fabrics

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The _____ has the killdeer habit of bobbing its body up and down while holding its head still

a. spotted sandpiper b. least sandpiper c. western sandpiper d. greater sandpiper

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What action must the four-way reversing valve take to operate the heat pump system in the defrost mode?

What will be an ideal response?

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Correct track _________________ is necessary to maintain long track life with low operating costs.

Fill in the blank(s) with the appropriate word(s).

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