Electrical Machines For satisfactory parallel operation of two transformers which of the following conditions is most essential, percentage impedance of all transformers must be same. MVA rating of all transformer inversely proportional to impedance. voltage ratio of all transformers must be same. polarities of all transformers must be same. percentage impedance of all transformers must be same. MVA rating of all transformer inversely proportional to impedance. voltage ratio of all transformers must be same. polarities of all transformers must be same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field current is reduced to zero the maximum power developed by alternator is 2.73 KW. 5.46 KW. 1.644 KW. 0.9103 KW. 2.73 KW. 5.46 KW. 1.644 KW. 0.9103 KW. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce volume of copper. iron loss. volume of iron. reluctance of core. volume of copper. iron loss. volume of iron. reluctance of core. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which machine is used for battery charging? None of these. DC series generator. DC shunt generator. Compounded DC generator. None of these. DC series generator. DC shunt generator. Compounded DC generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be 625 W 700 W 600 W 650 W 625 W 700 W 600 W 650 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is flat-topped co- sinusoidal rectangular sinusoidal flat-topped co- sinusoidal rectangular sinusoidal ANSWER DOWNLOAD EXAMIANS APP
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