Which of the following is used to check the rotating speeds of motors?

a. Insulation resistance tester
b. Tachometer
c. Spring tension scale
d. Stethoscope

b. Tachometer

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? Identify and state the historical significance of Jane Addams.

What will be an ideal response?

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Determine V? (see Fig. 10.62), using any method of your choice.

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Which type of unit can be used to heat two adjacent rooms at the same time?

A) Forced-air electric space heaters B) Cabinet-type electric space heaters C) Suspended-force fan-unit electric space heaters D) Gas wall furnaces

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The electron arrangement is in what type of specified shells around the nucleus?

A. Centrifugal B. Concentric C. Finite D. Conductor

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