DC Motors By putting controller resistance in series with the armature of a dc motor, we can obtain speeds Below the normal speed only Above the normal speed only Above as well as below the normal speed None of the listed here Below the normal speed only Above the normal speed only Above as well as below the normal speed None of the listed here 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 One-third Half Twice None of the listed here One-third Half Twice ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current Remains same Decreases None of the listed here Increases Remains same Decreases None of the listed here Increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motors never use belt connected loads. Differentially compounded Shunt Cummulative compounded Series Differentially compounded Shunt Cummulative compounded Series ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor is Directly proportional to flux per pole inversely proportional to applied voltage None of the listed here inversely proportional to flux per pole Directly proportional to flux per pole inversely proportional to applied voltage None of the listed here inversely proportional to flux per pole 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 1 Around 90% Anywhere between 75% and 90% Less than 50% 1 Around 90% Anywhere between 75% and 90% Less than 50% ANSWER DOWNLOAD EXAMIANS APP
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