__________ are the most often used type of overcurrent protection device used in residential wiring.

a. Circuit breakers
b. Edison-base fuses
c. Plug fuses
d. Cartridge fuses


a. Circuit breakers

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Water normally freezes at ____°F.

a. 28 b. 30 c. 32 d. 34

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The engineering manager at FXO Plastics wants to complete an alternative evaluation study. She asked the finance manager for the corporate MARR. The finance manager gave her some data on the project and stated that all projects must clear their average (pooled) cost by at least 4%. Use the data to deter­mine the minimum before-tax MARR.

What will be an ideal response?

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What is the phase (in units of radians) for the ac signal: 2 sin (5t + 1) V?

A. ?/90 B. 1 C. 2 D. 90/? E. ?/180

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Most homes built before the 1930s ____.

A. had little or no insulation and leaked badly B. were over-insulated and never leaked C. were unable to "breathe" D. could not dry out easily if they got wet

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