engineering recuitment GATE EE 2023-24 Test Series Electrical Machines Three Phase Induction Motor Induction Motor in Running Conditions
The rotor of a 3-phase induction motor has 0.04 Ω resistance per phase and 0.2 Ω standstill reactance per phase. An external resistance is used in the rotor circuit in order to get half of the maximum torque at starting. Neglect stator impedance. By what percentage will this external resistance change the power factor at starting?
Enter numerical value using the virtual keypad. Round off where necessary.