DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Induction motor C. shunt motor Reluctance motor C. series motor Induction motor C. shunt motor Reluctance motor C. series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens This will make armature to take heavy current, possibly burning it Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will run at very slow speed This will make armature to take heavy current, possibly burning it Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will run at very slow speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 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 20 to 25 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Field copper loss Windage loss Armature copper loss None of these Field copper loss Windage loss Armature copper loss None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Series Shunt Cumulatively compounded Differentially compounded Series Shunt Cumulatively compounded Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motor has the best speed regulation. Shunt Differentially compounded Series Cummulative compounded Shunt Differentially compounded Series Cummulative compounded ANSWER DOWNLOAD EXAMIANS APP
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