Electrical Machines A generator may loose residual magnetism due to vibrations. over excitation. heating. any of these. vibrations. over excitation. heating. any of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC motor operating at rated speed, the speed of the motor will Reduce. Increase. Remain unaltered. Oscillate around the normal speed. Reduce. Increase. Remain unaltered. Oscillate around the normal speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is less than that of second transformer. more than that of second transformer. equal to that of second transformer. none of these. less than that of second transformer. more than that of second transformer. equal to that of second transformer. none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which of the following generators negative voltage regulation can occur? over compound generator both B and C shunt generator series generators over compound generator both B and C shunt generator series generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The synchronous motor can be started by any of the above methods. providing damper winding in its rotor circuit. coupling it with a small AC induction motor called the pony motor. coupling it with a DC compound motor. any of the above methods. providing damper winding in its rotor circuit. coupling it with a small AC induction motor called the pony motor. coupling it with a DC compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Capacitor fitted with ceiling / table fans is of the value of 1 - 2 µF. 0.1 µF. 5 - 10 F. 2 - 3 µF. 1 - 2 µF. 0.1 µF. 5 - 10 F. 2 - 3 µF. ANSWER DOWNLOAD EXAMIANS APP
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