DC Motors The main disadvantage of the Ward-Leonard control method is High initial cost Low efficiency at high loads High maintenance cost All of these High initial cost Low efficiency at high loads High maintenance cost All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The compensating winding is connected in Series with armature Series-parallel with armature None of the listed here Parallel with armature Series with armature Series-parallel with armature None of the listed here Parallel with armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors For a D.C. shunt motor if the excitation is changed Torque and power both will change Torque will change but power will remain constant Torque, power and speed, all will change Torque will remain constant Torque and power both will change Torque will change but power will remain constant Torque, power and speed, all will change Torque will remain constant ANSWER DOWNLOAD EXAMIANS APP
DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Shunt Cumulatively compounded Series Differentially compounded Shunt Cumulatively compounded Series Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the speed of a dc shunt motor is increased the back emf of the motor will Become zero Increase Remains same Decrease Become zero Increase Remains same Decrease ANSWER DOWNLOAD EXAMIANS APP
DC Motors The starting resistance of a DC motor is generally 1000 Ω Low Around 500 Ω Infinitely large 1000 Ω Low Around 500 Ω Infinitely large ANSWER DOWNLOAD EXAMIANS APP
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