If two AC generators are operated in parallel, the load is distributed evenly by（）

A、a rheostat

B、a balancing coil

C、changing field excitation

D、adjusting the governor settings

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更多“If two AC generators are operated in parallel, the load is distributed evenly by（）”相关的问题

第1题

[单选题] If two AC generators are to be operated in parallel, the load is distributed evenly by（）

A、means of rheostat the governor settings B、a balance coil excitation C、adjusting the governor settings D、changing excitation

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第2题

[单选题] Most often （） is attached to the engine-propeller shaft for efficient electric power generation.

A、a variable-speed AC generator B、a fixed-speed AC generator C、an air blower D、a DC generator

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第3题

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

A、A.running at the same speed B、B.grounded C、C.of the same polarity D、D.in phase

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第4题

[单选题] When paralleling two AC generators, the frequency of the machine coming on-line, immediately prior to closing its breaker, should be （）

A、slightly less than the oncoming generator frequency B、the same as the bus frequency C、slightly greater than the bus frequency D、the same as the bus voltage

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第5题

[单选题] The division of the kilowatt load between two AC generators operating in parallel is controlled by the settings and characteristics of the （）.

A、voltage regulators B、field rheostats C、reverse power relays D、prime mover governors

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第6题

[单选题] Current changing in direction and rising and falling in value is （）.

A、AC B、DC C、generator D、fresh water generator

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第7题

[单选题] Which is a function of the voltage regulators used with AC generators?（）

A、To cut out generators when they are no longer required B、To cut in additional generators automatically as required C、To divide the KW load equally between generators operating in parallel D、To divide reactive current between generators operating in parallel

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第8题

[单选题] If two A.C.generators are to be operated in parallel, the load is distributed evenly by（）

A、means of rheostat the governor settings B、a balance coil excitation C、adjusting the governor settings D、changing excitation

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第9题

[单选题] A constant output voltage from an AC generator is maintained by the （）.

A、prime mover governor B、exciter generator C、voltage regulator D、reverse power relay

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