Electrical Machines Reactive power generated or delivered significantly depends on load angle. excitation. frequency. both 1 and 2. load angle. excitation. frequency. both 1 and 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Sparkless commutation can be achieved by employing inter poles. compensating winding. high resistance carbon brushes. any one or more of the above methods. inter poles. compensating winding. high resistance carbon brushes. any one or more of the above methods. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stepper motor is used in All of these food processing computer printers traction All of these food processing computer printers traction ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following statement is correct, if short circuit ratio is high? Good voltage regulation None of these Low short circuit current High voltage regulation Good voltage regulation None of these Low short circuit current High voltage regulation ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC motor operating at rated speed, the speed of the motor will Remain unaltered. Increase. Oscillate around the normal speed. Reduce. Remain unaltered. Increase. Oscillate around the normal speed. Reduce. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The armature resistance of a permanent magnet dc motor is 0.8 Ohm. At no load, the motor draws 1.5 A from a supply voltage of 25 V and runs at 1500 rpm. The efficiency of the motor while it is operating on load at 1500 rpm drawing a current of 3.5 A from the same source will be 48.0%. 59.2%. 57.1%. 88.8%. 48.0%. 59.2%. 57.1%. 88.8%. ANSWER DOWNLOAD EXAMIANS APP
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