DC Motors The main disadvantage of the Ward-Leonard control method is High maintenance cost All of these Low efficiency at high loads High initial cost High maintenance cost All of these Low efficiency at high loads High initial cost ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to 25% of the previous value 50% of the previous value 10% of the previous value 100% of the previous value 25% of the previous value 50% of the previous value 10% of the previous value 100% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thermistor Thyratron Thyristor Transistor Thermistor Thyratron Thyristor Transistor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The resistance of shunt field winding as compared to series field winding is None of the listed here The same Less More None of the listed here The same Less More ANSWER DOWNLOAD EXAMIANS APP
DC Motors When two dc series motor are commected in parallel, the resultant speed is Loss than the normal speed More than the normal speed Zero Normal speed Loss than the normal speed More than the normal speed Zero Normal speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The back emf in a dc motor ______ None of the listed here Aids the armature current Aids the applied voltage Opposes the applied voltage None of the listed here Aids the armature current Aids the applied voltage Opposes the applied voltage ANSWER DOWNLOAD EXAMIANS APP
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