Electrical Machines Open circuit in a transformer is prefered with direct current rated transformer voltage high frequency supply rated transformer current direct current rated transformer voltage high frequency supply rated transformer current ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? 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°. Delta side lags by -30°. Star side leads by 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to high resistance of carbon brushes. reactance voltage. armature reaction. presence of commutator. high resistance of carbon brushes. reactance voltage. armature reaction. presence of commutator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - φ induction motor can also be referred to as a shunt motor. repulsion motor. transformer. asynchronous motor. shunt motor. repulsion motor. transformer. asynchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If two 8-pole dc machines of identical armature sare wound, one with lap winding and the other with wave winding, then lap-wound machine will have more rated voltage and less current lap-wound machine will have more rated voltage and more current wave-wound machine will have more rated voltage and less current wave-wound machine will have more rated current and more voltage lap-wound machine will have more rated voltage and less current lap-wound machine will have more rated voltage and more current wave-wound machine will have more rated voltage and less current wave-wound machine will have more rated current and more voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. ANSWER DOWNLOAD EXAMIANS APP
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