Electrical Machines The emf induced in a conductor rotating in a bipolar field is both of above. AC. None of these DC. both of above. AC. None of these DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 200 V. 400 V. 800 V. 100 V. 200 V. 400 V. 800 V. 100 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip test is performed to determine direct axis reactance and quadrature axis reactance positive sequence reactance and negative sequence reactance All of these slip direct axis reactance and quadrature axis reactance positive sequence reactance and negative sequence reactance All of these slip 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. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a given torque, reducing divertor resistance of a DC series motor Decrease in speed but armature current remains the same. Decrease in speed demanding less armature current. Increase in speed but armature currnet remains the same. Increase in speed demanding more armature current. Decrease in speed but armature current remains the same. Decrease in speed demanding less armature current. Increase in speed but armature currnet remains the same. Increase in speed demanding more armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The speed of a DC series motor is Proportional to the square of the armature current. Proportional to the armature current. Inversely proportional to the armature current. Proportional to field current. Proportional to the square of the armature current. Proportional to the armature current. Inversely proportional to the armature current. Proportional to field current. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS