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单选题 The frequency of the induced voltages is ______ the rotational speed and the number of poles in the synchronous machine
学科：船舶电子电气专业英语2
时间：2025-12-27 00:44:33
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题目1单选题
The frequency of the induced voltages is ______ the rotational speed and the number of poles in the synchronous machineA. proportional toB. changed toC. equal toD. proper to
题目2单选题
The frequency of an AC generator is controlled by the ______A. governorB. rheostatC. capacitorD. exciter
题目3单选题
In an alternating current electrical system, a low system power factor is a direct sign of _______A. wasted energyB. efficient operationC. a short in the exciter field windingsD. an excessive number of minor system grounds
题目4单选题
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题目5单选题
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题目6单选题
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题目7单选题
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题目8单选题
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题目9单选题
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题目10单选题
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