DC Motors In variable speed motor A stronger 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 weaker commutating field is needed at low speed than at high speed A stronger 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 weaker commutating field is needed at low speed than at high speed 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 Which of the following application requires high starting torque? Locomotive Centrifugal pump Air blower Lathe machine Locomotive Centrifugal pump Air blower Lathe machine ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not the function of pole shoes in a D.C. machine? To support the field coils To spread out flux for better uniformity To reduce the reluctance of the magnetic path To reduce eddy current loss To support the field coils To spread out flux for better uniformity To reduce the reluctance of the magnetic path To reduce eddy current loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motor has the best speed regulation. Series Shunt Cummulative compounded Differentially compounded Series Shunt Cummulative compounded Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Rotor laminations End plates Pole shoes Commutator Rotor laminations End plates Pole shoes Commutator ANSWER DOWNLOAD EXAMIANS APP
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