DC Motors The main disadvantage of the Ward-Leonard control method is High maintenance cost High initial cost Low efficiency at high loads All of these High maintenance cost High initial cost Low efficiency at high loads All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Colliery winders Steel rolling mills Centrifugal pumps Elevators Colliery winders Steel rolling mills Centrifugal pumps Elevators ANSWER DOWNLOAD EXAMIANS APP
DC Motors By putting controller resistance in series with the armature of a dc motor, we can obtain speeds Above the normal speed only None of the listed here Below the normal speed only Above as well as below the normal speed Above the normal speed only None of the listed here Below the normal speed only Above as well as below the normal speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following methods gives the greatest braking torque? Rheostatic braking Regenerative braking Plugging None of the listed here Rheostatic braking Regenerative braking Plugging None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is Infinity 4000 rpm 2000 rpm 1000 rpm Infinity 4000 rpm 2000 rpm 1000 rpm ANSWER DOWNLOAD EXAMIANS APP
DC Motors At the instant of starting when a D.C. motor is put on supply, it behaves like A capacitive circuit A highly resistive circuit A low resistance circuit None of these A capacitive circuit A highly resistive circuit A low resistance circuit None of these ANSWER DOWNLOAD EXAMIANS APP
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