DC Motors The speed of a _____ motor is practically constant. Differentially compounded Shunt Cumulatively compounded Series Differentially compounded Shunt Cumulatively compounded Series ANSWER DOWNLOAD EXAMIANS APP
DC Motors In case the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be Less than 50% 1 Around 90% Anywhere between 75% and 90% Less than 50% 1 Around 90% Anywhere between 75% and 90% 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. None of the listed here Twice One-third Half None of the listed here Twice One-third Half ANSWER DOWNLOAD EXAMIANS APP
DC Motors In variable speed motor A weaker commutating field is needed at low speed than at high speed Same commutating field is needed at low speed than at high speed None of these 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 Same commutating field is needed at low speed than at high speed None of these A stronger commutating field is needed at low speed than at high speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is most suitable for Pump Lathes Cranes Punch presses Pump Lathes Cranes Punch presses ANSWER DOWNLOAD EXAMIANS APP
DC Motors The variable resistor shunting the field of a dc series motor is called a Potential divider Field divertor Voltage regulator Armature divertor Potential divider Field divertor Voltage regulator Armature divertor ANSWER DOWNLOAD EXAMIANS APP
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