Electrical Machines For satisfactory performance of 3-phase 480V, 60 Hz induction motor, the supply voltage at 50 Hz should be equal to 420 V. 480 V. 400 V. 350 V. 420 V. 480 V. 400 V. 350 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on which of the following? Core loss component. Shaft torque. Synchronous speed. Rotor speed. Core loss component. Shaft torque. Synchronous speed. Rotor speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two of supply terminals to a 3 - Φ induction motor get interchanged during re-connection after normal maintenance. When switched on the supply, the motor will rotate in direction opposite to that before maintenance. rotate in the same direction as before maintenance. get heated and damaged. not start at all. rotate in direction opposite to that before maintenance. rotate in the same direction as before maintenance. get heated and damaged. not start at all. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is All of these armature circuit resistance control field current control supply voltage control All of these armature circuit resistance control field current control supply voltage control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Total core loss is also called as -------------? Magnetic loss Eddy current loss Copper loss Hysteresis loss Magnetic loss Eddy current loss Copper loss Hysteresis loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Centrifugal switch is absent in which of the single phase induction motor? Shaded pole motor. Split phase motor. PSC (permanent split capacitor) motor. None of these Shaded pole motor. Split phase motor. PSC (permanent split capacitor) motor. None of these ANSWER DOWNLOAD EXAMIANS APP
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