Electrical Machines The polarity of a DC generator can be reversed by reversing the field current. any of above. increasing field current. reversing field electric current as well as direction of rotation. reversing the field current. any of above. increasing field current. reversing field electric current as well as direction of rotation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited? 45°. 24°. 10°. 30°. 45°. 24°. 10°. 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A small air gap in poly phase induction motor helps to increase starting torque. reduce chance of crawling. reduce chance of cogging. reduce magnetizing current. increase starting torque. reduce chance of crawling. reduce chance of cogging. reduce magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The reduced air gap results in an increase breaking torque. starting torque. power factor. cost of operation. breaking torque. starting torque. power factor. cost of operation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ratio of starting torque to full load torque is minimum in Differential compound motor. Cumulative compound motor. Shunt motor. Series motor. Differential compound motor. Cumulative compound motor. Shunt motor. Series motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC shunt motor if load is reduced DC Shunt Motor The speed will increase abruptly. The speed will remains almost constant. The speed will increase in proportion to reduction in load. DC Shunt Motor The speed will increase abruptly. The speed will remains almost constant. The speed will increase in proportion to reduction in load. ANSWER DOWNLOAD EXAMIANS APP
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