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The magnetization current drawn from an AC supply a synchronous motor is used to _________

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The magnetization current drawn from an AC supply a synchronous motor is used to _________

(a) set up flux in magnetic circuit of device

(b) compensate core losses

(c) set up magnetizing armature reaction

(d) all of the mentioned

This question was addressed to me during an interview.

My enquiry is from Power Factor Control of Synchronous Machines topic in portion Synchronous Machines of Electrical Machines

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The correct answer is (a) set up flux in magnetic circuit of device

To explain I would say: Magnetizing current sets up the flux needed in the machine.

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