Electrical Machines Which of the following windings are necessary in case of all dc machines? open type winding closed winding lap winding wave winding open type winding closed winding lap winding wave winding ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In electric locomotives which of the following motor are used ? DC compound motor. Synchronous motor. DC series motor. DC Shunt motor. DC compound motor. Synchronous motor. DC series motor. DC Shunt motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its speed will increase its power factor will reduce its speed will reduce its efficiency will improve its speed will increase its power factor will reduce its speed will reduce its efficiency will improve ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a given torque, reducing divertor resistance of a DC series motor Decrease in speed but armature current remains the same. Increase in speed demanding more armature current. Decrease in speed demanding less armature current. Increase in speed but armature currnet remains the same. Decrease in speed but armature current remains the same. Increase in speed demanding more armature current. Decrease in speed demanding less armature current. Increase in speed but armature currnet remains the same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole wave wound dc motor having flux per pole of 9.56 X 10-3 Wb contains 460 armature conductors. Calculate the back emf produced when it is running at a speed of 1500 rpm. 440 volt. 230 volt. 220 volt. 240 volt. 440 volt. 230 volt. 220 volt. 240 volt. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which motor used in Lathe machine? D.C. shunt motor. D.C. cumulative compound motor. None of these D.C . series motor. D.C. shunt motor. D.C. cumulative compound motor. None of these D.C . series motor. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS