Electrical Machines Which of the following motor is used in grinders? Split phase IM. Synchronous motor. Capacitor start capacitor run IM. Capacitor start IM. Split phase IM. Synchronous motor. Capacitor start capacitor run IM. Capacitor start IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of Heavy sparking at the first stud of starting resistance steps. None of these. Both of above. Heavy sparking at brushes. Heavy sparking at the first stud of starting resistance steps. None of these. Both of above. Heavy sparking at brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Oscillate around the normal speed. Remain unaltered. Reduce. Increase. Oscillate around the normal speed. Remain unaltered. Reduce. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, if direct axis reactance and quadrature axis reactance is equal, then power developed due to reluctance is maximum any of the above infinite value zero maximum any of the above infinite value zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed regulation of a DC motor is given as NnL − NfL. NnL/NfL. (NfL − NnL)/NnL. (NnL − NfL)/NfL. NnL − NfL. NnL/NfL. (NfL − NnL)/NnL. (NnL − NfL)/NfL. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Addition of 0.3 % to 4.5 % silicon to iron increases the electrical resistivity of iron. None of these increases the hysteresis loss. reduces the saturation magnetization. increases the electrical resistivity of iron. None of these increases the hysteresis loss. reduces the saturation magnetization. ANSWER DOWNLOAD EXAMIANS APP
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