DC Motors Compensating winding in a dc machine is placed None of the listed here On yoke in the interpolar gap On armature On yoke in the pole faces None of the listed here On yoke in the interpolar gap On armature On yoke in the pole faces ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following methods gives the greatest braking torque? Rheostatic braking Regenerative braking None of the listed here Plugging Rheostatic braking Regenerative braking None of the listed here Plugging ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? Stability High starting torque Wide speed range Low cost Stability High starting torque Wide speed range Low cost ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is best suited for driving Machine tools Shear and punches Cranes and hoists None of the listed here Machine tools Shear and punches Cranes and hoists None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the sparking To increase the generated emf To reduce the generated emf To improve cooling To reduce the sparking To increase the generated emf To reduce the generated emf To improve cooling ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is 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 High initial cost ANSWER DOWNLOAD EXAMIANS APP
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