Electrical Machines As compared to DOL starting, a cage induction motor with star-delta starting shall have more starting torque. smoother acceleration. reduced starting current. more starting time. more starting torque. smoother acceleration. reduced starting current. more starting time. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the emf generated by the armature is maximum when shaft rotation is high. rate of change of flux is maximum. rate of change of flux is minimum. induced voltage is high. shaft rotation is high. rate of change of flux is maximum. rate of change of flux is minimum. induced voltage is high. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To avoid formation of grooves in the commutator brush position has no effect on the commutator grooving. None of these the brushes of opposite polarity should track each other. the brushes of same polarity should track each other. brush position has no effect on the commutator grooving. None of these the brushes of opposite polarity should track each other. the brushes of same polarity should track each other. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC generator is run at full speed without any excitation. The open circuit voltage will be 220 V. zero. about 2 V. about 50 V. 220 V. zero. about 2 V. about 50 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 1 KVA, 230 V, 50 Hz, single phase transformer has an eddy current loss of 30 watts. The eddy current loss when the transformer is excited by a dc source of same voltage will be zero watt 30 W less than 30 W more than 30 W zero watt 30 W less than 30 W more than 30 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A triangular mmf wave is produced in the air gap of an electric machine. Such wave is produced by rotor of an synchronous machine. stator of a induction machine. stator of a dc machine. rotor of a dc machine. rotor of an synchronous machine. stator of a induction machine. stator of a dc machine. rotor of a dc machine. ANSWER DOWNLOAD EXAMIANS APP
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