Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 45 ppm. 35 ppm. 20 ppm. 25 ppm. 45 ppm. 35 ppm. 20 ppm. 25 ppm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Four times. Remains same. Eight times. Doubled. Four times. Remains same. Eight times. Doubled. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The current drawn by a DC motor at the time of starting is Very high. Very low. Zero. Normal. Very high. Very low. Zero. Normal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The efficiency of a transformer is mainly dependent on core losses. stray losses. dielectric losses. copper losses. core losses. stray losses. dielectric losses. copper losses. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer which of the following losses are zero? Iron loss Copper loss Rotational loss All of these Iron loss Copper loss Rotational loss All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field winding connection of DC shunt motor is changed motor will become slow. motor will not run. It will run in same direction. It will run in opposite direction. motor will become slow. motor will not run. It will run in same direction. It will run in opposite direction. ANSWER DOWNLOAD EXAMIANS APP
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