DC Motors By looking at which part of the motor, it can be easily confirmed that a particular motor is D.C. motor? Stator Commutator Shaft Frame Stator Commutator Shaft Frame ANSWER DOWNLOAD EXAMIANS APP
DC Motors Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control All above can be used Three point starter is used Drum type controller is used Four point starter is used All above can be used Three point starter is used Drum type controller is used Four point starter is used ANSWER DOWNLOAD EXAMIANS APP
DC Motors A compensating winding is an auxiliary winding embedded in slots in None of the listed here The pole faces of main poles The armature Partly in pole faces, partly in armature None of the listed here The pole faces of main poles The armature Partly in pole faces, partly in armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens Motor will come to stop Nothing will happen to motor 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 Motor will come to stop Nothing will happen to motor 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 The plugging gives the Highest torque braking None of the listed here Zero torque braking Smallest torque braking Highest torque braking None of the listed here Zero torque braking Smallest torque braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the armature of a D.C. motor rotates, e.m.f. induced is Mutually induced e.m.f. None of these Self-induced e.m.f. Back e.m.f. Mutually induced e.m.f. None of these Self-induced e.m.f. Back e.m.f. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS