Electrical Machines Pole changing methods are suitable only for ___________ type induction motor. wound. none of these. cage. linear. wound. none of these. cage. linear. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer core is made up of a silicon steel laminations which has maximum flux density 1 Tesla. If it was cold rolled grain oriented its flux density increases to 1.6 Tesla. What is the saving in core size or area due to cold rolled grain oriented process? 60% 68% 40% 38% 60% 68% 40% 38% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following bearings and their uses are correct roller bearings → large machines both A and B neither 1 nor 2 ball bearings → small machines roller bearings → large machines both A and B neither 1 nor 2 ball bearings → small machines ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A load of 900 lbs is to be raised with a lift car weighting 855 lbs at a speed of 110 feet per minute, the over balance being 40 % and percentage efficiency 45 %. Find the horse power of the motor without counterweight 180. 160. 150. 170. 180. 160. 150. 170. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a single phase capacitor start induction motor which of the following is valid? None of these. Rotation can be changed by interchanging supply terminals. Direction of rotation cannot be changed. Rotation can be changed by reversing main winding terminals. None of these. Rotation can be changed by interchanging supply terminals. Direction of rotation cannot be changed. Rotation can be changed by reversing main winding terminals. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hunting phenomenon is observed in which motor? DC motor. Induction motor. Both A and C. Synchronous motor. DC motor. Induction motor. Both A and C. Synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
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