Electrical Machines The slip of an induction motor during DC rheostatic braking is 2 + s. 1 - s. 2 - s. s. 2 + s. 1 - s. 2 - s. s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3 - Φ induction motor power factor at starting is high as compared to that while running. power factor at starting in the same as that while running. none of them. power factor at starting is low as compared to that while running. power factor at starting is high as compared to that while running. power factor at starting in the same as that while running. none of them. power factor at starting is low as compared to that while running. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ slip ring motor has any of the above. short-circuited rotor. wound rotor. double cage rotor. any of the above. short-circuited rotor. wound rotor. double cage rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space waveform of the air-gap flux distribution affects voltage but not the torque torque but not the voltage both the torque and voltage neither the voltage nor the torque voltage but not the torque torque but not the voltage both the torque and voltage neither the voltage nor the torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of Heavy sparking at the first stud of starting resistance steps. Both of above. None of these. Heavy sparking at brushes. Heavy sparking at the first stud of starting resistance steps. Both of above. None of these. Heavy sparking at brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following methods are suitable for the speed control of squirrel cage induction motor? 1. Voltage control. 2. Frequency control. 3. Pole changing method. 4. Rotor resistance control select the correct answer using the codes given below:- 1, 2 and 3. 2, 3 and 4. 1, 3 and 4. 2 and 4. 1, 2 and 3. 2, 3 and 4. 1, 3 and 4. 2 and 4. ANSWER DOWNLOAD EXAMIANS APP
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