Electrical Machines Hopkinson test is conducted under which of the following condition? any of the above no load half load full load any of the above no load half load full load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines As compared to an induction motor, the air gap in a DC motor is more. between 50% and 90%. same. less than 50%. more. between 50% and 90%. same. less than 50%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are the advantages of carbon brush over the copper brush? All of these They are self lubricating in nature They are not hard as copper brush In case of any sparking they will be less damaged than copper brushes All of these They are self lubricating in nature They are not hard as copper brush In case of any sparking they will be less damaged than copper brushes ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Reluctance and hysteresis motors are the types of which electrical motor? 1 - Φ synchronous motor. Stepper motor. DC motor. 3 - Φ induction motor. 1 - Φ synchronous motor. Stepper motor. DC motor. 3 - Φ induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3- phase synchronous motor can operate over a wide range of power factors i.e. from lagging to leading power factor. This is achieved by varying the speed. varying the applied voltage. changing the field excitation. changing the load. varying the speed. varying the applied voltage. changing the field excitation. changing the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage regulation can be determined by which of the following? MMf method. Synchronous impedance method. All of these ZPF method. MMf method. Synchronous impedance method. All of these ZPF method. ANSWER DOWNLOAD EXAMIANS APP
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