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

Average flux density, B av =2/‚âà√¨‚àö√ëB p

flux per pole, ‚âà√≠¬¨‚àÇ=2/PBpLD

Average flux density, Bav=2/‚âà√¨‚àö√ëBp

‚âà√≠¬¨‚àÇ=4/PBpLD

Bav=3/‚âà√¨‚àö√ëBp

If Bp= peak value of sinusoidal flux density wave, L = armature core l

1.	If Bp= peak value of sinusoidal flux density wave, L = armature core length, D = armature diameter, P = number of poles, the?
A.	flux per pole, ‚âà√≠¬¨‚àÇ=2/PB<sub>p</sub>LD
B.	Average flux density, B<sub>av</sub>=2/‚âà√¨‚àö√ëB<sub>p</sub>
C.	‚âà√≠¬¨‚àÇ=4/PB<sub>p</sub>LD
D.	B<sub>av</sub>=3/‚âà√¨‚àö√ëB<sub>p</sub>
Answer» B. Average flux density, B<sub>av</sub>=2/‚âà√¨‚àö√ëB<sub>p</sub>