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In a rotating electrical machine with 2 poles on the stator and 4 poles on the rotor, spaced equally, the net electromagnetic torque developed is ____________

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In a rotating electrical machine with 2 poles on the stator and 4 poles on the rotor, spaced equally, the net electromagnetic torque developed is ____________

(a) maximum

(b) zero or no torque is developed

(c) minimum

(d) none of the mentioned

I had been asked this question in homework.

My doubt is from Torque Production and Dynamic Equations topic in section Basic Concepts in Rotating Machines of Electrical Machines

1 Answer

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Best answer
The correct choice is (b) zero or no torque is developed

Easiest explanation: In a machine with 2 stator poles and 4 rotor poles spaced equally, the force of attraction will be cancelled due to the force of repulsion, and hence the net electromagnetic torque will be zero.

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