Synchronous Motors – Page 8 – HI MCQ!

A 3-phase synchronous motor is running clockwise. If the direction of its field current is reversed?

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The torque angle, in a synchronous motor, is the angle between?

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In a 3-phase, 4-pole, 50 Hz synchronous motor, the frequency, pole number and load torque all are halved. The motor speed will be?

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A synchronous machine with low value of short-circuit ratio has?

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For power factor correction, synchronous motors operate at?

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The maximum torque which a synchronous motor will develop at rest for any angular position of the rotor, at rated stator supply voltage and frequency, is known as?

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In a synchronous motor, the forced vibrations will be maximum when driving?

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In a synchronous machine in case the axis of field flux is in line with the armature flux, then?

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The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as?

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The maximum value of torque that a synchronous motor can develop without losing its synchronism is known as?

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