Electrical Machines The armature of DC motor is laminated to reduce the inductor. to reduce the hysteresis loss. to reduce the eddy current loss. to reduce the mass. to reduce the inductor. to reduce the hysteresis loss. to reduce the eddy current loss. to reduce the mass. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The overall power factor of an on load transformer is always leading. is always unity. depends on the power factor of the load. is always lagging. is always leading. is always unity. depends on the power factor of the load. is always lagging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under which of the following conditions is a dc motor provided with compensating winding used ? 1. Wide range of speed control above normal 2. Wide range of steady load variation with no speed control 3.Wide range of rapid variation in load Select the correct answer using the codes given below : Codes : 1 and 2 1, 2 and 3 1 and 3 2 and 3 1 and 2 1, 2 and 3 1 and 3 2 and 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 11% 41% 10% 21% 11% 41% 10% 21% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What type of dielectric material is used in capacitors used for fans and for power factor correction? Mica. Glass. Vacuum. Oil impregnated paper. Mica. Glass. Vacuum. Oil impregnated paper. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will any of the above. decrease. increase. remain constant. any of the above. decrease. increase. remain constant. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS