DC Motors In a dc motor if the back emf is absent Motor will run at very high speed Motor will burn Motor will not run at all Motor will run at very slow speed Motor will run at very high speed Motor will burn Motor will not run at all Motor will run at very slow speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The dirction of rotation of a dc series motor can be changed by Interchanging field terminals Either of Interchanging field or Interchanging supply None of the listed here Interchanging supply terminals Interchanging field terminals Either of Interchanging field or Interchanging supply None of the listed here Interchanging supply terminals ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 50 to 75 percent 10 to 15 percent 2 to 3 percent 20 to 25 percent 50 to 75 percent 10 to 15 percent 2 to 3 percent 20 to 25 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors A three point starter is considered suitable for Shunt as well as compound motors All D.C. motors Shunt, compound and series motors Shunt motors Shunt as well as compound motors All D.C. motors Shunt, compound and series motors Shunt motors ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used Where load changes frequently None of these Where constant operating speed is needed Where load is constant Where load changes frequently None of these Where constant operating speed is needed Where load is constant ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 5 HP Upto 10 HP Upto 20 HP Upto 15 HP Upto 5 HP Upto 10 HP Upto 20 HP Upto 15 HP ANSWER DOWNLOAD EXAMIANS APP
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