Electrical Machines A 230 V, 50 Hz, 4 pole single phase induction motor is rotating in the clockwise ( forward ) direction at a speed of 1425 rpm. If the rotor resistance at standstill is 7.8 Ω. Then the effective rotor resistance in the backward branch of the equivalent circuit will be 4 Ω. 2 Ω. 10 Ω. 8 Ω. 4 Ω. 2 Ω. 10 Ω. 8 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field divertor resistance for a DC series motor is of order of 50 Ω 100 Ω 10 Ω 0.1 Ω 50 Ω 100 Ω 10 Ω 0.1 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformers operating in parallel will share the load depending upon their rating. percentage impedance. leakage reactance. efficiency. rating. percentage impedance. leakage reactance. efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The size of inter poles is small as compared to main poles. What is the reason? In order to get saturated. All of these In order to not to get saturated. In order to get more flux. In order to get saturated. All of these In order to not to get saturated. In order to get more flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be 15.6 Nm 16.55 Nm 15.28 Nm 15.92 Nm 15.6 Nm 16.55 Nm 15.28 Nm 15.92 Nm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip exists in synchronous motor. in both machines. induction motor. none of above. synchronous motor. in both machines. induction motor. none of above. ANSWER DOWNLOAD EXAMIANS APP
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