When electrical energy is applied to a device that can convert it to another form of energy, such as an electric motor converting it to mechanical energy, it performs ____.

a. transfer
b. kinetic energy
c. energy
d. work


d. work

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For testing samples taken from truck mixers, the concrete discharge rate should be regulated by _____.

a. the size of the discharge gate opening b. fluidity of the mix c. the capacity of the sampling container d. the rate of drum rotation

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When the stop button is pressed, the dynamic braking contacts connect the dynamic braking resistor directly across the ____________________.

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

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Which of the following systems is most suitable where a pond or lake is located fairly close to the building?

A) Air-to-air system with outdoor unit located near the water B) Air-to-water system using the pond as a buffer tank C) Water-to-air open loop system using the pond water D) Water-to-air closed loop system with loop sunk in pond

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?What type of tubing coil is typically used with horizontal earth loop installations?

A. ?slinky B. ?u-tube C. ?submersible  D. ?manifold

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