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Analog Electronics - Engineering

Q1:

A transistor with a = 0.98 then β will be

A 49

B 50

C 47

D 48

ANS:A - 49

Beta (β) - It is a current gain of common emitter transistor configuration.
Alpha (α) - It is a current gain of common base transistor configuration.

The relation between alpha and beta.

α=β/(1+β)
β=α/(1-α)

So if α=0.98 then β=0.98/(1-0.98) = 49.