Electrical Machines To avoid formation of grooves in the commutator None of these brush position has no effect on the commutator grooving. the brushes of same polarity should track each other. the brushes of opposite polarity should track each other. None of these brush position has no effect on the commutator grooving. the brushes of same polarity should track each other. the brushes of opposite polarity should track each other. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, alternator has generated emf per phase of 230 V with 10% 3rd harmonic and 6% 5th harmonic content. Calculate rms line voltage for star connection. 50 V. 100 V. 230.2 V. 399 V. 50 V. 100 V. 230.2 V. 399 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor copper loss? 100W 80W 40W 60W 100W 80W 40W 60W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines High starting torque and low starting current is the advantage of squirrel cage induction motor. hysteresis motor. stepper motor. slip ring induction motor. squirrel cage induction motor. hysteresis motor. stepper motor. slip ring induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Motor 3 point starter is used to provide overload protection. all of above. limit the starting current to a safer value. provide protection against Low-Voltage. provide overload protection. all of above. limit the starting current to a safer value. provide protection against Low-Voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC motors will have percentage increase of input current for the same percentage increase in torque? Shunt. Cummulative compound. Differntical compound. Series. Shunt. Cummulative compound. Differntical compound. Series. ANSWER DOWNLOAD EXAMIANS APP
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