Electrical Machines The material used for commutator brushes is mostly copper. mica. carbon. cast iron. copper. mica. carbon. cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor, the starting torque developed is proportional to V² 1/V supply voltage V 1/V² V² 1/V supply voltage V 1/V² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motors has low ratings only? Capacitor start Resistance split phase Shaded pole Capacitor run Capacitor start Resistance split phase Shaded pole Capacitor run ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Silicon content in steel lamination is kept within 5% as it Increases cost. All of these makes the material brittle. increases hysteresis loss. Increases cost. All of these makes the material brittle. increases hysteresis loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Field divertor method of speed control of a DC series motor gives speed above rated one due to reduction of Armature current. Field current. Line current. None of above. Armature current. Field current. Line current. None of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the supply terminal of a DC shunt motor are interchanged The motor will run much faster in the same direction. The direction of rotation will reverse. The motor will run at its normal speed in the same direction as before. The motor will stop. The motor will run much faster in the same direction. The direction of rotation will reverse. The motor will run at its normal speed in the same direction as before. The motor will stop. ANSWER DOWNLOAD EXAMIANS APP
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