engineering recuitment GATE IN Test Series 2023-24 Mock Test Electrical Machines Three Phase Induction Motor
A three phase, 6 pole, 50 Hz induction motor has a full load speed of 950 rpm, with its slip rings short circuited. The motor drives a constant torque load.
If the rotor speed is reduced to 800 rpm and 400 rpm by inserting external resistances in the rotor circuit.
The ratio of rotor ohmic losses corresponding to these two reduced speeds is:Enter numerical value using the virtual keypad. Round off where necessary.