Electrical Machines Hunting phenomenon is observed in which motor? Induction motor. Synchronous motor. DC motor. Both A and C. Induction motor. Synchronous motor. DC motor. Both A and C. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous motor, the damper winding is generally used to reduce noise level only. reduce the eddy currents. prevent hunting and provide the starting torque. provide starting torque only. reduce noise level only. reduce the eddy currents. prevent hunting and provide the starting torque. provide starting torque only. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC motors will have percentage increase of input current for the same percentage increase in torque? Series. Shunt. Cummulative compound. Differntical compound. Series. Shunt. Cummulative compound. Differntical compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Mechanical energy is supplied to DC generator at the rate of 4200 J / s. The generator delivers 32.2 Amp at 120 V. What is the percentage efficiency of the generator? 205 V. 210 V. 212 V. 201.02 V. 205 V. 210 V. 212 V. 201.02 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 0.8. 0.4. 1. 0.6. 0.8. 0.4. 1. 0.6. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power of a dc motor is given by EbIa. EbIa2. EIa. none of these. EbIa. EbIa2. EIa. none of these. ANSWER DOWNLOAD EXAMIANS APP
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