If Bp= peak value of sinusoidal flux density wave, L = armature core length, D = armature diameter, P = number of poles,

[answerhappygod]

(i) flux per pole, Φ=2/PBpLD
(ii) Average flux density, Bav=2/πBp
(iii) Φ=4/PBpLD
(iv) Bav=3/πBp
(v) Bav=PΦ/πDL
(vi) Bav=PΦ/πrL
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a) (i), (ii), (v)
b) (ii), (iii), (v)
c) (ii), (iii), (vi)
d) (iii), (iv), (v)