Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Delta side lags by -30°. Star side leads by 30°. Delta side leads by 30°. Star side lags by -30°. Delta side lags by -30°. Star side leads by 30°. Delta side leads by 30°. Star side lags by -30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating windings is placed in which part of a D.C motor? On armature. None of these On yoke in the inter pole gap. On yoke in the pole faces. On armature. None of these On yoke in the inter pole gap. On yoke in the pole faces. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 2 pole lap winding dc machine , the resistance of one conductor is 2Ω and total number of conductors is 100. Find the total resistance 100Ω 10Ω 200Ω 50Ω 100Ω 10Ω 200Ω 50Ω ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For high current and low voltage rating which winding is employed to DC machine? Both wave and lap winding. No wave and lap winding. Lap winding. Wave winding. Both wave and lap winding. No wave and lap winding. Lap winding. Wave winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sequence of induction motor is RYB, then the direction of induction motor can be changed by which of the following sequence? BRY RBY BYR All of these BRY RBY BYR All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting in a synchronous cannot be due to variable frequency. windage friction. variable supply voltage. variable load. variable frequency. windage friction. variable supply voltage. variable load. ANSWER DOWNLOAD EXAMIANS APP
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