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The emf of a synchronous generator is given by

  • A.\( fN\Phi K_dK_p \)
  • B.\( 4.44fN/\Phi K_dK_p \)
  • C.\( 4.44fN\Phi K_dK_p \)
  • D.\( 4.44fN\Phi \) alone

Answer: C

The distribution and pitch factors account for the winding being spread over several slots and its coils being short-pitched, both of which reduce the fundamental slightly. Omitting them overstates the emf by several per cent.

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