DC Motors The mechanical power developed in a dc motor is maximum when back emf is equal to _____ the applied voltage. One-third None of the listed here Twice Half One-third None of the listed here Twice Half ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The field is opened Load is removed The load is increase The armature circuit is opened. The field is opened Load is removed The load is increase The armature circuit is opened. ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the armature current decreases When the armature current increases By interpoles When the field current increases When the armature current decreases When the armature current increases By interpoles When the field current increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors The most suitable motor for elevators is the ____ motor. Cummulative compounded Series Differentially compuonded Shunt Cummulative compounded Series Differentially compuonded Shunt ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Full-load current All of these Starting torque Operating speed Full-load current All of these Starting torque Operating speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The running speed of a dc series motor is basically determined by Armature reaction None of the listed here Field excitation Load Armature reaction None of the listed here Field excitation Load ANSWER DOWNLOAD EXAMIANS APP
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