DC Motors Which D.C. motor is generally preferred for cranes and hoists? Series motor Shunt motor Differentially compounded motor Cumulatively compounded motor Series motor Shunt motor Differentially compounded motor Cumulatively compounded motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when Load is removed The load is increase The field is opened The armature circuit is opened. Load is removed The load is increase The field is opened The armature circuit is opened. ANSWER DOWNLOAD EXAMIANS APP
DC Motors A three point starter is considered suitable for All D.C. motors Shunt motors Shunt as well as compound motors Shunt, compound and series motors All D.C. motors Shunt motors Shunt as well as compound motors Shunt, compound and series motors ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed in a dc motor is maximum when back emf is equal to _____ the applied voltage. Half None of the listed here Twice One-third Half None of the listed here Twice One-third ANSWER DOWNLOAD EXAMIANS APP
DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Series Differentially compounded Cumulatively compounded Shunt Series Differentially compounded Cumulatively compounded Shunt ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is All of these Low efficiency at high loads High initial cost High maintenance cost All of these Low efficiency at high loads High initial cost High maintenance cost ANSWER DOWNLOAD EXAMIANS APP
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