Electrical Machines A 4 pole dc generator is running at 1500 rpm the frequency of current in the armature winding is 50Hz. 100Hz. 200Hz. 150Hz. 50Hz. 100Hz. 200Hz. 150Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During no load test, an induction motor draws power for core loss and copper loss. for copper loss and windage friction loss. only for the small copper loss. for core loss and windage and friction loss. for core loss and copper loss. for copper loss and windage friction loss. only for the small copper loss. for core loss and windage and friction loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Vacuum. Glass. Mica. Oil impregnated paper. Vacuum. Glass. Mica. Oil impregnated paper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous generator, if mechanical input is increased with constant excitation, the load angle will either increase or decrease increase None of these decrease either increase or decrease increase None of these decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Motors for fans and pumps are selected in the rpm range 1440 to 2880. 375 to 500. 500 to 720. 720 to 920. 1440 to 2880. 375 to 500. 500 to 720. 720 to 920. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which DC motor will have least percentage increase of input current, for the same percentage increase in the torque DC Shunt Motor Separately Excited DC Motor DC Series Motor Compound Wound DC Motor DC Shunt Motor Separately Excited DC Motor DC Series Motor Compound Wound DC Motor ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS