Electrical Machines In case of IM the torque is inversely proportional to √slip. directly proportional to slip. inversely proportional to slip. directly proportional to slip2. inversely proportional to √slip. directly proportional to slip. inversely proportional to slip. directly proportional to slip2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Air core transformer as compared to iron core transformer, has more magnetic core loss. more copper loss. less magnetic core loss. no magnetic core loss. more magnetic core loss. more copper loss. less magnetic core loss. no magnetic core loss. 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 Woud be equal to 2If1. Cannot be predicted due to insufficient data. Would be equal to If1/2. Would be equal to If1. Woud be equal to 2If1. Cannot be predicted due to insufficient data. 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 eddy current losses. mechanical losses. ohmic losses. hysteresis losses. eddy current losses. mechanical losses. ohmic losses. hysteresis losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is more expensive for same KW output rating ? Synchronous motor. DC Shunt Motor Induction motor. AC single phase motor. Synchronous motor. DC Shunt Motor Induction motor. AC single phase motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A crusher is equipped with Reluctance motor. DC shunt motor. Synchronous motor. Slip ring induction motor. Reluctance motor. DC shunt motor. Synchronous motor. Slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
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