Electrical Machines Which of the following is minimized by laminating the core of a transformer? Hysteresis loss. Eddy current loss. Copper loss. Stray loss. Hysteresis loss. Eddy current loss. Copper loss. Stray loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase 6 pole 50 Hz induction motor is running at 5% slip.What is the speed of the motor? 950 rpm 1000 rpm 900 rpm 850 rpm 950 rpm 1000 rpm 900 rpm 850 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In circle diagram for induction motor, diameter of circle represents which of the following ? Rotor current. Line voltage. Slip. Running torque. Rotor current. Line voltage. Slip. Running torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as T is independent of P. T2 ∝ P3. T ∝ P. T ∝ √P. T is independent of P. T2 ∝ P3. T ∝ P. T ∝ √P. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of these types of motor is used in elevators? DC compound motor. DC shunt motor. DC series motor. None of these. DC compound motor. DC shunt motor. DC series motor. None of these. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The low voltage winding of a 400/230 V single phase 50 Hz transformer is to be connected to keep the magnetization current at the same level in both the cases the voltage at 25 Hz should be 65 V 230 V 115 V 460 V 65 V 230 V 115 V 460 V ANSWER DOWNLOAD EXAMIANS APP
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