DC Motors The greatest percentage of power loss in a dc motor is due to Windage loss Core loss Friction loss Copper loss Windage loss Core loss Friction loss Copper loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors In variable speed motor None of these A weaker commutating field is needed at low speed than at high speed A stronger commutating field is needed at low speed than at high speed Same commutating field is needed at low speed than at high speed None of these A weaker commutating field is needed at low speed than at high speed A stronger commutating field is needed at low speed than at high speed Same commutating field is needed at low speed than at high speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is comnected across the AC supply it will Run at normal speed Not run Burn due to heat produced in the field winding by eddy currents Run at lower speed Run at normal speed Not run Burn due to heat produced in the field winding by eddy currents Run at lower speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors For constant torque drive which speed control method is preferred? Shunt armature control Armature voltage control Mechanical loading system Field control Shunt armature control Armature voltage control Mechanical loading system Field control ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which motor should be used for centrifugal pumps? Either series or shunt None of the listed here Series motor Shunt motor Either series or shunt None of the listed here Series motor Shunt motor 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 Cumulatively compounded Differentially compounded Level compounded Under compounded Cumulatively compounded Differentially compounded Level compounded Under compounded ANSWER DOWNLOAD EXAMIANS APP
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