DC Motors In the dc motor the iron losses occur in Commutator Armature Brushes Field Commutator Armature Brushes Field ANSWER DOWNLOAD EXAMIANS APP
DC Motors These days dc motors are widely used in Pumping sets Electric traction Air compressors Machine shops Pumping sets Electric traction Air compressors Machine shops ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 80 to 90 % Less than 50% 100 % 60 to 70 % 80 to 90 % Less than 50% 100 % 60 to 70 % ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking Regenerative Dynamic braking Plugging None of these Regenerative Dynamic braking Plugging None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a _____ motor is practically constant. Differentially compounded Series Cumulatively compounded Shunt Differentially compounded Series Cumulatively compounded Shunt ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it Nothing will happen to motor Motor will come to stop This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it Nothing will happen to motor Motor will come to stop ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS