Electrical Machines What are slot wedges in a DC machine made of? Fibre. Mild steel. Silicon steel. Cast iron. Fibre. Mild steel. Silicon steel. Cast iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 24 12 10 5 24 12 10 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve power factor. Improve power level. Improve current level. Improve voltage level. Improve power factor. Improve power level. Improve current level. Improve voltage level. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotating magnetic field is produced in an induction motor because of stator winding. None of these rotor winding. either stator winding or rotor winding. stator winding. None of these rotor winding. either stator winding or rotor winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In Ward-Leonard method of speed control, the direction of rotation of motor is reversed usually reversing the connection of the motor armature terminal. motor field terminal. generator armature terminal. generator field terminal. motor armature terminal. motor field terminal. generator armature terminal. generator field terminal. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a short circuit test on a transformer is performed at 25 V, 50 Hz, the drawn current is I1. If the test is performed by 25 V and 25 Hz and power drawn current is I2, then I1 < I2 I1 = I2 None of these I1 > I2 I1 < I2 I1 = I2 None of these I1 > I2 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS