DC Motors In a dc motor constant torque is produced due to End plates Rotor laminations Pole shoes Commutator End plates Rotor laminations Pole shoes Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors Three point starter can be used for Shunt motor only Both shunt and compound motor Series motor only Compound motor only Shunt motor only Both shunt and compound motor Series motor only Compound motor only ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be Less than 50% 100 % 60 to 70 % 80 to 90 % Less than 50% 100 % 60 to 70 % 80 to 90 % ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To support the field coils To reduce the reluctance of the magnetic path To reduce eddy current loss To spread out flux for better uniformity To support the field coils To reduce the reluctance of the magnetic path To reduce eddy current loss To spread out flux for better uniformity ANSWER DOWNLOAD EXAMIANS APP
DC Motors Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be Level compounded Cumulatively compounded Differentially compounded Under compounded Level compounded Cumulatively compounded Differentially compounded Under compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Steel rolling mills Colliery winders Centrifugal pumps Elevators Steel rolling mills Colliery winders Centrifugal pumps Elevators ANSWER DOWNLOAD EXAMIANS APP
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