Electrical Machines Swinburne test is conducted under which of the following condition? half load no load any of the above full load half load no load any of the above full load ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following components of a DC generator plays vital role for providing direct electric current of a DC generator? Dummy coils. Eye bolt. Commutator. Equalizer rings. Dummy coils. Eye bolt. Commutator. Equalizer rings. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase breaking torque. cost of operation. starting torque. power factor. breaking torque. cost of operation. starting torque. power factor. 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 When excitation is increased (over excitation), the synchronous generator operates at any of the above. leading power factor. unity power factor. lagging power factor. any of the above. leading power factor. unity power factor. lagging power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the cause of rapid brush wear may be rough commutator surface. severe sparking. imperfect contact. any of above. rough commutator surface. severe sparking. imperfect contact. any of above. ANSWER DOWNLOAD EXAMIANS APP