Electrical Machines Consider a separately excited DC motor. If the field current is increased while the armature terminal voltage is held constant, then speed of the motor will increase. remains same. Decrease.d none of these. increase. remains same. Decrease.d none of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of following DC motors will have percentage increase of input current for the same percentage increase in torque? Cummulative compound. Shunt. Series. Differntical compound. Cummulative compound. Shunt. Series. Differntical compound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A compound motor has both shunt and series field winding. tertiary winding. only series field winding. only shunt field winding. both shunt and series field winding. tertiary winding. only series field winding. only shunt field winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 ,V 15 , kW 100 rpm shunt motor with armature resistance of 0.25 , W has a rated line current of 68 A and a rated field current of 2.2 A. The change in field flux required to obtain a speed of 1600 rpm while drawing a line current of 52.8 A and a field current of 1.8 A is 36.36% increase 36.36% decrease 18.18% increase 36.36% increase 36.36% increase 36.36% decrease 18.18% increase 36.36% increase ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following is/are effects of armature reaction? increase the maintenance and repair increases the design cost All of these increase the iron loss increase the maintenance and repair increases the design cost All of these increase the iron loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Voltage regulation of transformer is given by (V2 - E2) / V2 (E2 - V2) / E2 (E2 - V2) / V2 (V2 - E2) / E2 (V2 - E2) / V2 (E2 - V2) / E2 (E2 - V2) / V2 (V2 - E2) / E2 ANSWER DOWNLOAD EXAMIANS APP
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