DC Motors Armature reaction in dc motor is increased When the armature current decreases By interpoles When the armature current increases When the field current increases When the armature current decreases By interpoles When the armature current increases When the field current increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc machines the residual magnetism is of the order of 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor if the back emf is absent Motor will burn Motor will not run at all Motor will run at very slow speed Motor will run at very high speed Motor will burn Motor will not run at all Motor will run at very slow speed Motor will run at very high speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. generator, the iron losses mainly take place in Armature conductors Commutator Armature rotor Yoke Armature conductors Commutator Armature rotor Yoke ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Series motor Cummulative compounded motor Differentially compounded motor Shunt motor Series motor Cummulative compounded motor Differentially compounded motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following tests will be suitable for testing two similar D.C. series motors of large capacity? Brake test Hopkinson's test Swinburne's test Field test Brake test Hopkinson's test Swinburne's test Field test ANSWER DOWNLOAD EXAMIANS APP
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