Question 4.2: A four-pole dc generator having wave wound armature winding ...

A four-pole dc generator having wave wound armature winding has 51 slots, each slot containing 20 conductors. Calculate the voltage generated in the armature when driven at 1500 rpm. Assume flux per pole to be 0.5 mWb.

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P = 4, A = 2   (because the armature winding is wave wound)

N = 1500 rpm

Total number of armature conductors,

Z = 20 × 51

= 1020

Equation for induced EMF,                   E= \frac{ΦZNP}{60A}  V

Substituting values                               E= \frac{0.5  ×  10^{-3}  ×  1020  ×  1500  ×  4}{60  ×  2}

   =   255 V

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