BJT is biased to _________(a) Work as a switch(b) Prevent thermal runaway(c) Increase DC collector current(d) Operate it in the saturation regionI have been asked this question during an online interview.My question comes from Transistor Bias Configuration topic in division Transistor Biasing and Low Frequencies of Analog Circuits

BJT is biased to _________(a) Work as a switch(b) Prevent thermal runa

1.	BJT is biased to _________(a) Work as a switch(b) Prevent thermal runaway(c) Increase DC collector current(d) Operate it in the saturation regionI have been asked this question during an online interview.My question comes from Transistor Bias Configuration topic in division Transistor Biasing and Low Frequencies of Analog Circuits
Answer» The CORRECT choice is (b) Prevent THERMAL runaway Easiest explanation: A BJT is biased to operate in the active region, to work as an amplifier. It is not biased in the cut-off or saturation region to work as a SWITCH. ALSO, biasing is done to maintain a stable collector current so that the operating point does not change. This also prevents thermal runaway.

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