Electrical Machines What is the phase difference between two windings of A.C servomotor ? 30°. 120°. 60°. 90°. 30°. 120°. 60°. 90°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The coil spam can never be equal to pole pitch. may or may not be exactly equal to people pitch. none of above. must be exactly equal to people pitch. can never be equal to pole pitch. may or may not be exactly equal to people pitch. none of above. must be exactly equal to people pitch. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In auto transformer if the turn ratio is K, what is the power transferred inductively? (1-K) × input power K × input power both A and B None of these (1-K) × input power K × input power both A and B None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field divertor resistance for a DC series motor is of order of 50 Ω 10 Ω 0.1 Ω 100 Ω 50 Ω 10 Ω 0.1 Ω 100 Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Commutator in DC generator is used for collecting of current convert AC armature current in to DC increase efficiency reduce losses collecting of current convert AC armature current in to DC increase efficiency reduce losses ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When excitation is increased (over excitation), the synchronous generator operates at unity power factor. any of the above. lagging power factor. leading power factor. unity power factor. any of the above. lagging power factor. leading power factor. ANSWER DOWNLOAD EXAMIANS APP
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