Which of the following are primarily designed for use with inductive motor loads and to withstand the interrupt current of a locked rotor?
a. Lighting contactors
b. Definite-purpose contactors/motor starters
c. NEMA-rated contactors/motor starters
d. IEC-rated contactors/motor starters
c. NEMA-rated contactors/motor starters
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Which of the following would not be found in the general conditions section of specifications?
a. Permits and payment of fees b. Safety c. Supervision of construction d. Types and limits of insurance
A "de minimus" release is:
A) Less than 10 percent of the system charge. B) Less than 1 percent of the system charge. C) The quantity of refrigerant released in the course of making a good-faith attempt to recapture and recycle or safely dispose of refrigerant. D) The minimum amount of refrigerant release required by the EPA before they prosecute a case.
When should you use the hand valve to park a combination vehicle?
a. To park on a grade. b. Never. c. To park at loading docks.
The average DC voltage for a single-phase full-wave rectifier is ____ of the peak value.
a. .12 b. .524 c. .637 d. .9