Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 5 - 10 F. 1 - 2 µF. 2 - 3 µF. 0.1 µF. 5 - 10 F. 1 - 2 µF. 2 - 3 µF. 0.1 µF. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of 3 - Φ IM, plugging means pulling the motor directly on line without a rotor. starting the motor on load which is more than the rated load. locking of rotor due to harmonics. interchanging two supply phases for quick stopping. pulling the motor directly on line without a rotor. starting the motor on load which is more than the rated load. locking of rotor due to harmonics. interchanging two supply phases for quick stopping. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to reactance voltage. presence of commutator. high resistance of carbon brushes. armature reaction. reactance voltage. presence of commutator. high resistance of carbon brushes. armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under commutation results in no sparking. sparking at the middle of the brush. sparking at the leading edge of the brush. sparking the trailing edge of the brush. no sparking. sparking at the middle of the brush. sparking at the leading edge of the brush. sparking the trailing edge of the brush. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In above questions, find the power delivered by each of the alternators to a load of impedance 6Ω(resistive) 100 W, 2000 W. 6000 W, 7000 W. 1000 W, 5040 W. 3190 W, 5040 W. 100 W, 2000 W. 6000 W, 7000 W. 1000 W, 5040 W. 3190 W, 5040 W. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions hunting of synchronous motor is likely to occur ? Over-loading for long period. Small and constant load. Periodic variation of load. Over-excitation. Over-loading for long period. Small and constant load. Periodic variation of load. Over-excitation. ANSWER DOWNLOAD EXAMIANS APP
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