Electrical Machines Which of the following machines have highest power factor with respect to magnetizing current? Open slot type machines. Closed slot type machines. Semi closed slot type machine. Any of the above. Open slot type machines. Closed slot type machines. Semi closed slot type machine. Any of the above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit in a transformer is prefered with high frequency supply rated transformer voltage rated transformer current direct current high frequency supply rated transformer voltage rated transformer current direct current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A commutator in dc machine provide ----------------- rectification? half wave full wave half wave controlled full wave controlled half wave full wave half wave controlled full wave controlled ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The leakage reactance of a 3-phase alternator is determined by performing short circuit and slip tests. open circuit and zero power factor tests. zero power factor and slip tests. open circuit and short circuit tests. short circuit and slip tests. open circuit and zero power factor tests. zero power factor and slip tests. open circuit and short circuit tests. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slight curvature at the lower end of the OCC of a self excited DC generator is due to magnetic inertia. residual flux. high speed. high field resistance. magnetic inertia. residual flux. high speed. high field resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A voltmeter gives 120 oscillations per minute when connected to the rotor of an induction motor. The frequency is 50Hz. The slip of the motor is 25% 4% 2% 5% 25% 4% 2% 5% ANSWER DOWNLOAD EXAMIANS APP
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