railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Single Phase Motor and Special Machines Double Field Revolving Theory
A 4 pole Induction motor, is supplied by a slightly unbalanced three-phase 50Hz source is rotating at 1440rpm. The electrical frequency in Hz of the induced negative sequence current in the rotor is
1
100
2
98
3
52
4
48