Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at any of the above. leading power factor. lagging power factor. unity power factor. any of the above. leading power factor. lagging power factor. unity power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The noise resulting from vibrations of lamination set by magnetic forces, is termed as boo. hum. magnetostriction. zoom. boo. hum. magnetostriction. zoom. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is increased, the power factor is leading power factor unity power factor lagging power factor None of these leading power factor unity power factor lagging power factor None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In induction motor the 7th harmonic torque may make the motor rotate at (1 / 7)th synchronous speed. This is called harmonics. crawling. cogging. resonance. harmonics. crawling. cogging. resonance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Value of specific electric loading of Induction motor is in the range of 5000 - 45000 ampere conductor / metre. 400 - 4000 ampere conductor / metre. 30000 - 100000 ampere conductor / metre. 40 - 400 ampere conductor / metre. 5000 - 45000 ampere conductor / metre. 400 - 4000 ampere conductor / metre. 30000 - 100000 ampere conductor / metre. 40 - 400 ampere conductor / metre. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutators in DC machines have a role of which converts Both AC to DC and DC to AC. AC to DC. none of these. high voltage DC to low voltage DC. Both AC to DC and DC to AC. AC to DC. none of these. high voltage DC to low voltage DC. ANSWER DOWNLOAD EXAMIANS APP
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