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 50% of the previous value 25% of the previous value 100% of the previous value 10% of the previous value 50% of the previous value 25% of the previous value 100% of the previous value 10% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors The rheostatic speed control method is very Unsuitable for rapidly changing loads Economical Suitable for getting speeds above the normal Efficient Unsuitable for rapidly changing loads Economical Suitable for getting speeds above the normal Efficient ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Shunt motor Differentially compounded motor Series motor Cummulative compounded motor Shunt motor Differentially compounded motor Series motor Cummulative compounded motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which motor should be used for centrifugal pumps? Either series or shunt Shunt motor None of the listed here Series motor Either series or shunt Shunt motor None of the listed here Series motor 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 One-third Twice None of the listed here Half One-third Twice ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor if the back emf is absent Motor will burn Motor will run at very high speed Motor will run at very slow speed Motor will not run at all Motor will burn Motor will run at very high speed Motor will run at very slow speed Motor will not run at all ANSWER DOWNLOAD EXAMIANS APP