Electrical Machines In a transformer zero voltage regulation is achieved at a load power factor which is unity leading lagging zero unity leading lagging zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Motor is driving a constant load torque having armature resistance of 0.25 Ω and armature current of 60 A having connected to a voltage of 230 V. Now a resistance of 1 ohm is added into the armature circuit. The ratio of their speed will be 0.25. 1.24. 0.62. 0.72. 0.25. 1.24. 0.62. 0.72. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase transformer the magnitude of leakage reactance is twice that of resistance of both primary and secondary. With secondary short circuited, the input power factor is 2/√5 1/√2 1/3 1/√5 2/√5 1/√2 1/3 1/√5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field connection of a DC Shunt Motor is changed then it will run in same direction. it will run in opposite direction. it will run in same direction by slowly. motor will not run. it will run in same direction. it will run in opposite direction. it will run in same direction by slowly. motor will not run. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has negative speed regulation? Both B and C. Shunt motors. Series motors. Differential compound motors. Both B and C. Shunt motors. Series motors. Differential compound motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are preferred in lifts? DC compound motors. None of these DC series motors. DC shunt motors. DC compound motors. None of these DC series motors. DC shunt motors. ANSWER DOWNLOAD EXAMIANS APP
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