DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Series Shunt Differentially compounded Cumulatively compounded Series Shunt Differentially compounded Cumulatively compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following methods gives the greatest braking torque? Regenerative braking Plugging None of the listed here Rheostatic braking Regenerative braking Plugging None of the listed here Rheostatic braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a dc motor can be controlled by changing All of the listed here Aplied voltage Is flux Armature circuit resistance All of the listed here Aplied voltage Is flux Armature circuit resistance ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens Nothing will happen to the motor Motor will run at very slow speed 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 the motor Motor will run at very slow speed 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 ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor is generally preferred for cranes and hoists? Series motor Cumulatively compounded motor Differentially compounded motor Shunt motor Series motor Cumulatively compounded motor Differentially compounded motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating winding is basically used in a dc machine None of the listed here To control the speed of machine To improve commutation To reduce armature reaction None of the listed here To control the speed of machine To improve commutation To reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP