DC Motors In which of the following tests only one motor is required? Hopkinson's test Brake test Field's test Swinburne's test Hopkinson's test Brake test Field's test Swinburne's test ANSWER DOWNLOAD EXAMIANS APP
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 Drum type controller is used All above can be used Four point starter is used Three point starter is used Drum type controller is used All above can be used Four point starter is used ANSWER DOWNLOAD EXAMIANS APP
DC Motors Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be Under compounded Differentially compounded Level compounded Cumulatively compounded Under compounded Differentially compounded Level compounded Cumulatively compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors The torque developed by a dc motor is directly proportional to Armature resistance × armature current None of the listed here Flux per pole × armature current Armature resistance × applied voltage Armature resistance × armature current None of the listed here Flux per pole × armature current Armature resistance × applied voltage ANSWER DOWNLOAD EXAMIANS APP
DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Differentially compounded Shunt Cumulatively compounded Series Differentially compounded Shunt Cumulatively compounded Series ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive motor vibration is caused by Worn bearings Open armature coil Bent shaft Too much brush tension Worn bearings Open armature coil Bent shaft Too much brush tension ANSWER DOWNLOAD EXAMIANS APP
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