DC Motors The greatest percentage of power loss in a dc motor is due to Copper loss Windage loss Friction loss Core loss Copper loss Windage loss Friction loss Core loss ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. generators are normally designed for maximum efficiency around Rated r.p.m. All of these Rated voltage Full load Rated r.p.m. All of these Rated voltage Full load ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc shunt motors are used for driving Cranes Hoist Machine tools Trains Cranes Hoist Machine tools Trains ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens This will make armature to take heavy current, possibly burning it Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will run at very slow speed This will make armature to take heavy current, possibly burning it Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Motor will run at very slow speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be Rated full-load current Less than full-load current More than full-load current Almost negligible Rated full-load current Less than full-load current More than full-load current Almost negligible ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Operating speed Full-load current Starting torque All of these Operating speed Full-load current Starting torque All of these ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS