DC Motors The main disadvantage of the Ward-Leonard control method is All of these High maintenance cost Low efficiency at high loads High initial cost All of these High maintenance cost Low efficiency at high loads High initial cost ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? High starting torque Stability Low cost Wide speed range High starting torque Stability Low cost Wide speed range ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating pole winding is connected in Parallel with the armature None of the listed here Series with the armature Series-parallel with the armature Parallel with the armature None of the listed here Series with the armature Series-parallel with the armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors In case the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be 1 Less than 50% Around 90% Anywhere between 75% and 90% 1 Less than 50% Around 90% Anywhere between 75% and 90% 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 None of these A low resistance circuit A highly resistive circuit A capacitive circuit None of these A low resistance circuit A highly resistive circuit ANSWER DOWNLOAD EXAMIANS APP
DC Motors Usually wide and sensitive speed control is desired in case of Colliery winders Elevators Steel rolling mills Centrifugal pumps Colliery winders Elevators Steel rolling mills Centrifugal pumps ANSWER DOWNLOAD EXAMIANS APP
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