Electrical Machines If the back emf in DC motor vanishes suddenly the motor will start haunting. run at very low speed. burn. run at very high speed. start haunting. run at very low speed. burn. run at very high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For standing a DC motor a starter is required because It starts the motor. it limits the starting current to a safe value. it limits the speed of the motor. None of these It starts the motor. it limits the starting current to a safe value. it limits the speed of the motor. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors are suitable for computer printer drive ? Shaded pole motor. Stepper motor. Reluctance motor. Hysteresis motor. Shaded pole motor. Stepper motor. Reluctance motor. Hysteresis motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor has negative speed regulation? Differential compound motor Cumulative compound motors Series motor Shunt motor Differential compound motor Cumulative compound motors Series motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The squirrel cage induction motors are provided with blades in order to facilitate cooling of rotor. none of these. eliminate noise. balance the rotor dynamically. facilitate cooling of rotor. none of these. eliminate noise. balance the rotor dynamically. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The main disadvantage(s) of the ward-Leonard system is/are poor overall efficiency. high initial cost. all of above. high maintenance cost. poor overall efficiency. high initial cost. all of above. high maintenance cost. ANSWER DOWNLOAD EXAMIANS APP
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