DC Motors If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking None of these Plugging Dynamic braking Regenerative None of these Plugging Dynamic braking Regenerative ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Starting torque Operating speed Full-load current All of these Starting torque Operating speed Full-load current All of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors By flux control method of speed control of a dc shunt motor, we can obtain speeds. Below the normal speed only None of the listed here Above the normal speed only Above as well as below the normal speed Below the normal speed only None of the listed here Above the normal speed only Above as well as below the normal speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following tests will be suitable for testing two similar D.C. series motors of large capacity? Field test Hopkinson's test Swinburne's test Brake test Field test Hopkinson's test Swinburne's test Brake test ANSWER DOWNLOAD EXAMIANS APP
DC Motors The friction and windage losses in a dc motor depends upon Flux Armature current Field and armature resistance Speed Flux Armature current Field and armature resistance Speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the sparking To increase the generated emf To reduce the generated emf To improve cooling To reduce the sparking To increase the generated emf To reduce the generated emf To improve cooling ANSWER DOWNLOAD EXAMIANS APP
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