Electrical Machines The heat transfer by convection in a transformer least depends on temperature difference. color of the paint. air velocity. surface area. temperature difference. color of the paint. air velocity. surface area. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the e.m.f. generated by a 4 pole lap connected DC Generator rotating at 1500 r.p.m.? Its flux per pole is 0.4 mWb and total no of armature conductors is 1000. 30 volts. 10 volts. 20 volts. 40 volts. 30 volts. 10 volts. 20 volts. 40 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which machine is used for battery charging? Compounded DC generator. DC series generator. None of these. DC shunt generator. Compounded DC generator. DC series generator. None of these. DC shunt generator. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction of an unsaturated DC machine is crossmagnetising. none of above. magnetising. demagnetising. crossmagnetising. none of above. magnetising. demagnetising. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed depends on voltage both 1and 2 reactance load angle voltage both 1and 2 reactance load angle ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 volt dc motor has an armature winding resistance of 0.5 ohm. Calculate the emf induced by the motor if the full load armature current is 23 ampere. 218.5 volt. 120 volt. 220.4 volt. None of these. 218.5 volt. 120 volt. 220.4 volt. None of these. ANSWER DOWNLOAD EXAMIANS APP
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