DC Motors Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control Three point starter is used Four point starter is used All above can be used Drum type controller is used Three point starter is used Four point starter is used All above can be used Drum type controller is used ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following in a dc motor, can sustain the maximum temperature rise? Slip rings Armature winding Field winding Commutator Slip rings Armature winding Field winding Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will run noisy The motor will continue to run The armature may burn The motor will stop The motor will run noisy The motor will continue to run The armature may burn The motor will stop ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is 2000 rpm 1000 rpm 4000 rpm Infinity 2000 rpm 1000 rpm 4000 rpm Infinity ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is best suited for driving None of the listed here Shear and punches Machine tools Cranes and hoists None of the listed here Shear and punches Machine tools Cranes and hoists ANSWER DOWNLOAD EXAMIANS APP
DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Cumulatively compounded Series Shunt Differentially compounded Cumulatively compounded Series Shunt Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS