Electrical Machines Which of the following generators are used in arc welding? cumulative compound generators shunt generators series generators differential compound generators cumulative compound generators shunt generators series generators differential compound generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Oscillate around the normal speed. Remain unaltered. Reduce. Increase. Oscillate around the normal speed. Remain unaltered. Reduce. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Slip test is performed to determine All of these positive sequence reactance and negative sequence reactance direct axis reactance and quadrature axis reactance slip All of these positive sequence reactance and negative sequence reactance direct axis reactance and quadrature axis reactance slip ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the necessity of copper brushes in a dc motors? None of these. To increase the flux cutting by the rotor. To convert alternating supply current to direct current. To absorb the mechanical shocks produced during running condition. None of these. To increase the flux cutting by the rotor. To convert alternating supply current to direct current. To absorb the mechanical shocks produced during running condition. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines To get the speed of DC motor more than normal without wastage of electrical energy _____________ is used. none of above. any of above method. Ward Leonard control. rheostatic control. none of above. any of above method. Ward Leonard control. rheostatic control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a conductively compensated DC series motor, the compensating winding is provided In parallel with the field winding. In parallel with the armature winding. As a separate unit. In series with the armature winding. In parallel with the field winding. In parallel with the armature winding. As a separate unit. In series with the armature winding. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS