Electrical Machines Pole changing methods are suitable only for ___________ type induction motor. none of these. cage. linear. wound. none of these. cage. linear. wound. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to improve starting torque. improve efficiency. improve power factor. reduce copper loss. improve starting torque. improve efficiency. improve power factor. reduce copper loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods of speed control is not affected through stator side? Change of supply voltage. Change of supply frequency. Change of number of pole. Change of rotor resistance. Change of supply voltage. Change of supply frequency. Change of number of pole. Change of rotor resistance. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 3-phase induction motor, if the supply voltage and frequency are reduced by the same ratio, then slip at which maximum torque occurs is less and maximum torque increases more and maximum torque decreases less and maximum torque decreases more and maximum torque remains constant less and maximum torque increases more and maximum torque decreases less and maximum torque decreases more and maximum torque remains constant ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine 4 pole lap winding is used. The number of parallel paths are? 8 4 2 1 8 4 2 1 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Type of single phase motor having highest power factor at full load is shaded pole type. capacitor run. split phase. capacitor start. shaded pole type. capacitor run. split phase. capacitor start. ANSWER DOWNLOAD EXAMIANS APP
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