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單項選擇題

Aboard ship, a grounded field coil in an AC motor can be determined by using a （）.

A.portable growler
B.galvanometer
C.visual inspection
D.megohmmeter

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單項選擇題

A generator is prevented from becoming motorized by the use of a/an （）.

A.over-speed trip
B.reverse power relay
C.back pressure trip
D.governor controls

單項選擇題

Which of the electrical properties listed will always be the same for each component in a parallel circuit?（）

A.Impedance
B.Current
C.Resistance
D.Voltage