A dc series motor is coupled to a load whose torque is proportional to speed. It is fed by a single phase ac supply through a full converter. When speed is 500 rpm, firing angle is 45°. It is desired to raise the speed. It will be necessary to-A-decrease the firing angleB-increase the firing angleC-either decrease or increase the firing angle depending on the required speedD-decrease the load torque-A-decrease the firing angle

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A dc series motor is coupled to a load whose torque is proportional to speed. It is fed by a single phase ac supply through a full converter. When speed is 500 rpm, firing angle is 45&deg;. It is desired to raise the speed. It will be necessary to-A-decrease the firing angleB-increase the firing angleC-either decrease or increase the firing angle depending on the required speedD-decrease the load torque-A-decrease the firing angle

APTITUDE CRACK · Accepted Answer

The correct option is  A decrease the firing angle No answer description is available.

Power Electronics

Q1: A dc series motor is coupled to a load whose torque is proportional to speed. It is fed by a single phase ac supply through a full converter. When speed is 500 rpm, firing angle is 45°. It is desired to raise the speed. It will be necessary to

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Q1: A dc series motor is coupled to a load whose torque is proportional to speed. It is fed by a single phase ac supply through a full converter. When speed is 500 rpm, firing angle is 45°. It is desired to raise the speed. It will be necessary to

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