Electrical Machines Scott connections are used for single phase to three phase transformation. three phase to single phase transformation. any of the above. three phase to two phase transformation. single phase to three phase transformation. three phase to single phase transformation. any of the above. three phase to two phase transformation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The low voltage winding of a 400/230 V single phase 50 Hz transformer is to be connected to keep the magnetization current at the same level in both the cases the voltage at 25 Hz should be 230 V 65 V 115 V 460 V 230 V 65 V 115 V 460 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss is proportional to f3. f2. f. f1.5. f3. f2. f. f1.5. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Cross magnetization effects which of the following? reduction in main field flux both 2 and 3 reduces the terminal voltage commutation reduction in main field flux both 2 and 3 reduces the terminal voltage commutation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Use of fractional pitch winding make it stiffer. results in reduced axial length of the machine. All of these results in reduced leakage reactance. make it stiffer. results in reduced axial length of the machine. All of these results in reduced leakage reactance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase slip-ring induction motor, brushes are connected to external star-connected resistors. equalizing coils. DC supply. 3 - Φ AC supply. external star-connected resistors. equalizing coils. DC supply. 3 - Φ AC supply. ANSWER DOWNLOAD EXAMIANS APP
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