The function of the defrost timer is to disconnect the compressor from the circuit and connect a resistive heater located near the ____ at regular intervals.

a. evaporator
b. condenser
c. dryer
d. compressor


a. evaporator

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Volume meters record natural gas volume so that the utility can charge the user for the fuel used. The usual basis of the charge is the _________, the amount of gas that delivers 100,000 BTU.

a. therm b. watt c. kilowatt d. gallon

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The welding current required to make a resistance weld must be at a very high voltage but low amperage.

Answer the following statement true (T) or false (F)

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Another name for the HAZCOM standard is the “_______________.”

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

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The ability of a device to store electrical energy in an electrostatic field is

a. inductance c. semiconductor b. dielectric d. capacitance

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