BJT Operating Regions - MCQs with answers

Q1. What is an essential possible condition of biasing for a transistor to operate in an active region?

a. Forward biasing of emitter base & collector base junctions
b. Reverse biasing of emitter-base & collector-base junctions
c. Forward biasing of emitter base & Reverse biasing of collector-base junctions
d. Reverse biasing of emitter-base & Forward biasing of collector-base junctions

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ANSWER: c. Forward biasing of emitter base & Reverse biasing of collector-base junctions



Q2. Which operating condition is satisfied by the transistor if it is supposed to function in cut-off region ?

a. VCE > 0
b. VCE = 0
c. VCE < 0
d. VCE = Vcc

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ANSWER: d. VCE = Vcc



Q3. Which operating region of BJT enables Emitter-base & Collector-base junctions to undergo perfect short-circuit configuration ?

a. Active Region
b. Saturation Region
c. Cut-off Region
d. None of the above

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ANSWER: b. Saturation Region


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