Electrical Machines A single-phase transformer has its maximum efficiency at 60 percent of full load. At full load copper loss will be less than core loss. more than core loss. equal to core loss. zero. less than core loss. more than core loss. equal to core loss. zero. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer, the frequency of a voltage at the secondary is less than primary. any of the above. equal to primary. greater than the primary. less than primary. any of the above. equal to primary. greater than the primary. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Wave winding is employed in DC machine of low current and low voltage rating. low current and high voltage rating. high current and low voltage rating. high current and low voltage rating. low current and low voltage rating. low current and high voltage rating. high current and low voltage rating. high current and low voltage rating. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Exciting current of an induction motor is lesser than power transformer. none of these. equal as power transformer. higher than power transformer. lesser than power transformer. none of these. equal as power transformer. higher than power transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The crawling in the induction motor is caused by improper design of stator laminations harmonics developed in the motor low voltage supply high loads improper design of stator laminations harmonics developed in the motor low voltage supply high loads ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Semi closed slots or totally closed slots are used in induction motors, essentially to improve starting torque decrease starting torque reduce magnetising current and improve power factor increase pull out torque improve starting torque decrease starting torque reduce magnetising current and improve power factor increase pull out torque ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS