To relieve the race condition that might be encountered between the opening of a stacked PB switch and a large motor-starter contactor, a jog function can be generated by the ____________ control of a relay, which through NO contacts offers ____________ control of the motor-starter solenoid coil.
A) 1-wire; 2-wire
B) 3-wire; 2-wire
C) 2-wire; 3-wire
D) 2-wire; 4-wire
Show Answer
Answer:B
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