Electrical Machines A 8 pole, 50 Hz single phase induction motor is running at 690 rpm. Its slip with respect to forward field is -0.08 1.92 -1.92 0.08 -0.08 1.92 -1.92 0.08 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Short circuit test is performed on a transformer with a certain impressed voltage at rated frequency. If the short circuit test is now performed with the same magnitude of impressed voltage, but at frequency higher than the rated frequency then The magnitude will both increase. The magnetude of current will increase, but power factor will decrease. The magnitude of circuit as well as the power factor will decrease. The magnitude of current will decrease but the power factor will increase. The magnitude will both increase. The magnetude of current will increase, but power factor will decrease. The magnitude of circuit as well as the power factor will decrease. The magnitude of current will decrease but the power factor will increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If we increase the rotor reactance value, the maximum torque will decrease not changed increase None of these decrease not changed increase None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The function of field regulator in a DC compound motor is to none of above. control field current. limit the armature current. vary the armature resistance. none of above. control field current. limit the armature current. vary the armature resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the same power output rating and full load speed, the motor will have poorest starting torque, is Shunt. Series. Differential compound. Cummulative compound. Shunt. Series. Differential compound. Cummulative compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statements is/are correct ? Inter pole winding will act in interpolar region. Both A and B. Compensating winding will act under the pole. None of these Inter pole winding will act in interpolar region. Both A and B. Compensating winding will act under the pole. None of these ANSWER DOWNLOAD EXAMIANS APP
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