Electrical Machines Which of following DC generator will be in a position to build up without any residual magnetism in the field? Series. Shunt. Separately excited. Compound. Series. Shunt. Separately excited. Compound. 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? 68% 40% 38% 60% 68% 40% 38% 60% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a synchronous motor is running at synchronous speed, the damper winding produces both 1 and 2. no torque. damping torqe. eddy current torque. both 1 and 2. no torque. damping torqe. eddy current torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is both A and B low at heavy loads only low at light loads only low at rated load only both A and B low at heavy loads only low at light loads only low at rated load only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor used in Lathe machine? D.C. cumulative compound motor. D.C . series motor. None of these D.C. shunt motor. D.C. cumulative compound motor. D.C . series motor. None of these D.C. shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Autotransformer makes effective saving on copper and copper losses, when its transformation ratio is equal to less than one. approx to one. greater than one. very low less than one. approx to one. greater than one. very low ANSWER DOWNLOAD EXAMIANS APP
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