DC Motors The speed of a series motor at no load is 1000 rpm 2000 rpm Infinity 4000 rpm 1000 rpm 2000 rpm Infinity 4000 rpm ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? Low cost Wide speed range Stability High starting torque Low cost Wide speed range Stability High starting torque ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Cummulative compounded motor Series motor Differentially compounded motor Shunt motor Cummulative compounded motor Series motor Differentially compounded motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The armature may burn The motor will stop The motor will continue to run The motor will run noisy The armature may burn The motor will stop The motor will continue to run The motor will run noisy ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. shunt motors as load is reduced The speed will remain almost/constant The speed will reduce The speed will increase in proportion to reduction in load The speed will increase abruptly The speed will remain almost/constant The speed will reduce The speed will increase in proportion to reduction in load The speed will increase abruptly ANSWER DOWNLOAD EXAMIANS APP
DC Motors In variable speed motor None of these Same commutating field is needed at low speed than at high speed A stronger commutating field is needed at low speed than at high speed A weaker commutating field is needed at low speed than at high speed None of these Same commutating field is needed at low speed than at high speed A stronger commutating field is needed at low speed than at high speed A weaker commutating field is needed at low speed than at high speed ANSWER DOWNLOAD EXAMIANS APP
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