Electrical Machines An induction motor has synchronous speed of 1500 rpm. What will be the slip when it is running at a speed of 1450 rpm? +3% -3.33% -3% +3.33% +3% -3.33% -3% +3.33% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole 50 Hz induction motor is running at 1470 rpm. Find the speed of stator magnetic field with respect to rotor? 1500 rpm zero 1470 rpm 30 rpm 1500 rpm zero 1470 rpm 30 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an induction machine is run at above the synchronous speed it acts as None of these an induction motor an induction generator a synchronous motor None of these an induction motor an induction generator a synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines which of the following losses are negligible in blocked rotor test? iron loss both A and B copper loss mechanical loss iron loss both A and B copper loss mechanical loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 1 - 2 µF. 2 - 3 µF. 0.1 µF. 5 - 10 F. 1 - 2 µF. 2 - 3 µF. 0.1 µF. 5 - 10 F. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor in split phase induction motor is used to improve the starting torque. improve the power factor. start the motor. reduce the harmonics. improve the starting torque. improve the power factor. start the motor. reduce the harmonics. ANSWER DOWNLOAD EXAMIANS APP
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