Electrical Machines When pure inductive load is connected to the alternator, what is the effect of armature reaction? None of these Demagnetization Cross magnetization Magnetization None of these Demagnetization Cross magnetization Magnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following DC Motor the ratio of starting torque to full load torque is minimum? Cumulative compound motor. Series motor. Differential compound motor. Shunt motor. Cumulative compound motor. Series motor. Differential compound motor. Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is 123.3 KVA 100 KVA 50 KVA 83.33 KVA 123.3 KVA 100 KVA 50 KVA 83.33 KVA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor in split phase induction motor is used to start the motor. reduce the harmonics. improve the power factor. improve the starting torque. start the motor. reduce the harmonics. improve the power factor. improve the starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformers operating in parallel will share the load depending upon their rating. percentage impedance. efficiency. leakage reactance. rating. percentage impedance. efficiency. leakage reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by Nr = 120f / p × (1-s). Ns = 120f /p × ( 1 - r). None of these Ns = 120f / p × ( 1 - s ). Nr = 120f / p × (1-s). Ns = 120f /p × ( 1 - r). None of these Ns = 120f / p × ( 1 - s ). ANSWER DOWNLOAD EXAMIANS APP