DC Motors Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control All above can be used Three point starter is used Drum type controller is used Four point starter is used All above can be used Three point starter is used Drum type controller is used Four point starter is used 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 Half Twice One-third None of the listed here Half Twice One-third ANSWER DOWNLOAD EXAMIANS APP
DC Motors The running speed of a dc series motor is basically determined by Load None of the listed here Armature reaction Field excitation Load None of the listed here Armature reaction Field excitation ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motor has the best speed regulation. Cummulative compounded Series Shunt Differentially compounded Cummulative compounded Series Shunt Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors In which of the following tests only one motor is required? Field's test Swinburne's test Hopkinson's test Brake test Field's test Swinburne's test Hopkinson's test Brake test ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Rotor laminations Pole shoes End plates Commutator Rotor laminations Pole shoes End plates Commutator ANSWER DOWNLOAD EXAMIANS APP
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