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單項選擇題

Electric circuits are protected against overloads and short circuits by means of a/an （）.

A.circuit breaker
B.amplifier
C.diode
D.capacitor

單項選擇題

Ambient temperature is the （）.

A.amount of temperature rise with no load
B.temperature of the compartment where the motor is located
C.normal operating temperature, less the room temperature
D.amount of temperature developed by an operating motor

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While paralleling two AC generators using synchronizing lamps only, both lamps will go dark when the generators are （）.

你可能感興趣的試題

Electric circuits are protected against overloads and short circuits by means of a/an （）.

Ambient temperature is the （）.

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