Electrical Machines The breakdown torque of a synchronous motor varies as 1/V applied voltage V 1/V² V² 1/V applied voltage V 1/V² V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A Shunt generator running at 1000 rpm has generated emf of 100 V. If the speed increases to 1200 rpm, the generated emf will be nearly 175 V 120 V 140 V 240 V 175 V 120 V 140 V 240 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC motors has got maximum relieving property? Series. Shunt. Differentical compound. Cummulative compound. Series. Shunt. Differentical compound. Cummulative compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ IM in order to eliminate cogging the number of stator slots must be an integral multiple of number of rotor slots. equal to number of rotor slots. unequal to number of rotor slots and skewed in shape. either (B) or (C). an integral multiple of number of rotor slots. equal to number of rotor slots. unequal to number of rotor slots and skewed in shape. either (B) or (C). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-φ alternator has negligible stator resistance. A short circuit test is conducted on this alternator. At a particular speed, a field current of If1 is required to drive the rated armature current. If the speed of the alternator is reduced to half, the field current required to maintain rated armature current Cannot be predicted due to insufficient data. Woud be equal to 2If1. Would be equal to If1/2. Would be equal to If1. Cannot be predicted due to insufficient data. Woud be equal to 2If1. Would be equal to If1/2. Would be equal to If1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The shaft torque of a dc motor is less than the electromagnetic torque because of ohmic losses. mechanical losses. eddy current losses. hysteresis losses. ohmic losses. mechanical losses. eddy current losses. hysteresis losses. ANSWER DOWNLOAD EXAMIANS APP
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