DC Motors For a D.C. shunt motor if the excitation is changed Torque will remain constant Torque will change but power will remain constant Torque and power both will change Torque, power and speed, all will change Torque will remain constant Torque will change but power will remain constant Torque and power both will change Torque, power and speed, all will change ANSWER DOWNLOAD EXAMIANS APP
DC Motors The plugging gives the None of the listed here Highest torque braking Zero torque braking Smallest torque braking None of the listed here Highest torque braking Zero torque braking Smallest torque braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following losses are significantly reduced by laminating the core of a D.C. generator? Hysteresis losses Copper losses Windage losses Eddy current losses Hysteresis losses Copper losses Windage losses Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. motor which of the following can sustain the maximum temperature rise? Armature winding Slip rings Field winding Commutator Armature winding Slip rings Field winding Commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Produce flat characteristics Increase speed Reduce sparking Decrease speed Produce flat characteristics Increase speed Reduce sparking Decrease speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The greatest percentage of power loss in a dc motor is due to Windage loss Copper loss Core loss Friction loss Windage loss Copper loss Core loss Friction loss ANSWER DOWNLOAD EXAMIANS APP
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