railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrical Machines Three Phase Induction Motor Induction Motor Slip
A 3 ϕ, 4-pole, 50 Hz induction motor runs at a speed of 1440 rpm
1. Its slip is 0.04.
2. Its rotor field rotates at 60 rpm with respect to rotor.
3. Its rotor field rotates at 60 rpm with respect to stator field.
4. Its rotor runs at a speed 60 rpm with respect to stator field.
5. Its rotor field rotates at a speed of 1500 rpm with respect to stator.
From these, the correct statements are :
1
1, 2, 5
2
1, 2, 4
3
1, 2, 4, 5
4
1, 2, 3, 4, 5