The structure of d.c. commutator machine is generally designed with

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UPSC IES Electrical 2022 Prelims Official Paper
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  1. non-salient stator and salient rotor
  2. salient stator and non-salient rotor
  3. salient stator and salient rotor
  4. non-salient stator and non-salient rotor

Answer (Detailed Solution Below)

Option 2 : salient stator and non-salient rotor
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ST 1: UPSC ESE (IES) Civil - Building Materials
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In a salient pole component (stator/rotor) the poles are projected out from the surface whereas in a non-salient pole component (stator/rotor) the rotor/stator is cylindrical in shape having a number of parallel slots in the outer periphery. A DC commutator machine is generally designed as under:

Hence the structure of d.c. commutator machine is generally designed with salient stator and non-salient rotor.

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