Electrical Machines A synchronous motor will deliver maximum power when load angle is 45°. input power factor is unity. load angle is equal to internal angle θ. load angle is 0°. load angle is 45°. input power factor is unity. load angle is equal to internal angle θ. load angle is 0°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The overall power factor of an on load transformer is always unity. is always leading. is always lagging. depends on the power factor of the load. is always unity. is always leading. is always lagging. depends on the power factor of the load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Line voltage. Slip. Running torque. Rotor current. Line voltage. Slip. Running torque. Rotor current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be zero. less than core loss. equal to core loss. more than core loss. zero. less than core loss. equal to core loss. more than core loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following are variable losses? hysteresis loss shunt field copper loss eddy current loss armature copper loss hysteresis loss shunt field copper loss eddy current loss armature copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Flux density under trailing pole tips in case of generator will None of these increase either increase or decrease decrease None of these increase either increase or decrease decrease ANSWER DOWNLOAD EXAMIANS APP
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