The NEC requires that all _____________________ that may require servicing with the power on carry an arc flash label if there is a potential hazard.

A. non-dwelling equipment
B. panelboards
C. motor controllers
D. machinery


Answer: A

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Worker's Compensation and Employer's Liability ____ is required by state regulations; contributions are collected to provide a fund from which workers who are injured while working or as a result of working are compensated.

A. Bond B. Insurance C. Pledge D. Security

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The extra charge a customer may pay for a remanufactured engine until the old engine is returned is called a ____________________.

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

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In most cases, the refrigerant leaving the evaporator must be ____________________ percent vapor.

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

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Transformer open circuit (OC) and short circuit (SC) tests allow us to calculate certain equivalent circuit values. Which parameters are calculated from the OC test and which are from the SC test?

A. The OC test gives the resistances and the SC test gives the reactances B. The OC test gives the series impedance and the SC test gives the shunt admittance C. The OC test gives the shunt admittance and the SC test gives the series impedance D. The OC test gives the voltages and the SC test gives currents

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