Electrical Machines When operating, two or more transformers in parallel, % impedance of these transformers should be inversely proportional to MVA rating of transformers. proportionate to MVA rating of transformers. same. such that actual impedance of all transformers would be same. inversely proportional to MVA rating of transformers. proportionate to MVA rating of transformers. same. such that actual impedance of all transformers would be same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip test is performed to determine direct axis reactance and quadrature axis reactance positive sequence reactance and negative sequence reactance slip All of these direct axis reactance and quadrature axis reactance positive sequence reactance and negative sequence reactance slip All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a 3-phase induction motor operating in its stable region increases with increase in the load torque. decreases with decrease in the load torque. remains constant. decreases with increase in the load torque. increases with increase in the load torque. decreases with decrease in the load torque. remains constant. decreases with increase in the load torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformer core is laminated to reduce eddy current loss. copper loss. hysteresis loss. both 1 and 2. eddy current loss. copper loss. hysteresis loss. both 1 and 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To increase starting torque of a 3-phase slip ring induction motor, preferred method is to increase rotor resistance None of these supply voltage supply frequency rotor resistance None of these supply voltage supply frequency ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cogging and crawling are phenomena associated with any of the above. cage induction machines and they are essentially the same. the former during starting and the latter at a fraction of its rated speed. the former at a fraction of its rate speed and the latter during starting. any of the above. cage induction machines and they are essentially the same. the former during starting and the latter at a fraction of its rated speed. the former at a fraction of its rate speed and the latter during starting. ANSWER DOWNLOAD EXAMIANS APP
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