單項選擇題Which of the listed items will stop a motor due to a reduction in voltage and restart it when the voltage is restored to normal?（）

A.Low voltage protection circuit
B.Non-renewable link fuse
C.Renewable link fuse
D.Low voltage release circuit


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1.單項選擇題Which of the following statements concerning a simple parallel resistance circuit is correct?（）

A.The voltage drop across each resistor is the same
B.The total current flow equals the reciprocal of the sum of the individual currents
C.The total resistance equals the sum of the individual resistances
D.The total voltage equals the sum of the individual voltages across each resistance

2.單項選擇題A ground in an electrical circuit outside the engine room （）.

A.cannot be detected tinder normal conditions
B.is of no consequence to engineering personnel
C.is indicated at the branch circuit breaker panel
D.is indicated by the ground detecting lamps on the main switchboard