The ratio of collector current to emitter current by maintaining collector to base voltage at a constant level is usually termed as ___________ (Marks : 01)

a. Common Emitter Amplification Factor

b. Common Collector Amplification Factor

c. Common Base Amplification Factor

d. None of the above

ANSWER: Common Base Amplification Factor

Explanation:

The point of operation that moves on the characteristic curve for AC operation is basically represented as,

α AC = Δ Ic / Δ IE ( VCB = constant)

where, α AC is expressed as common base short amplification factor.

In DC mode of operation, collector current and emitter current are specified levels of current on the basis of majority carriers & hence can be relatively expressed as,

α AC = Ic / IE