For the BJT to operate in active mode Collector-Base junction must be(a) Heavily doped(b) Must reversed bias(c) Must be forward bias(d) Lightly dopedI have been asked this question during a job interview.My question is taken from BJTs Current-Voltage Characteristics in chapter Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits

For the BJT to operate in active mode Collector-Base junction must be(

1.	For the BJT to operate in active mode Collector-Base junction must be(a) Heavily doped(b) Must reversed bias(c) Must be forward bias(d) Lightly dopedI have been asked this question during a job interview.My question is taken from BJTs Current-Voltage Characteristics in chapter Bipolar Junction Triodes (BJTs) of Electronic Devices & Circuits
Answer» CORRECT option is (b) Must reversed bias The EXPLANATION: The BJT operates in active mode when the collector-Base JUNCTION is reversed bias. Also doping cannot PREVENT saturation of the transistor.

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