Q.Draw the static characteristics of a power transistor and mark different region.

The static (output) characteristics of a power transistor (PBJT) plot collector current $I_C$ against collector-emitter voltage $V_{CE}$ for a family of increasing base currents $I_B$, with the cut-off, active, quasi-saturation and hard-saturation regions marked. …

[!TLDR]

Plot $I_C$ vs $V_{CE}$ for increasing base current $I_B$, and mark the cut-off, active, quasi-saturation and hard-saturation regions.

The static output characteristics of a power bipolar junction transistor (PBJT) show how the collector current $I_C$ varies with the collector-emitter voltage $V_{CE}$ for different fixed values of base current $I_B$. The vertical axis is $I_C$ and the horizontal axis is $V_{CE}$; each curve corresponds to one value of $I_B$, and $I_C$ increases as $I_B$ increases.

The regions to mark are:

• Cut-off region: $I_B\le 0$; only a small leakage current flows, both junctions are reverse biased and the transistor is OFF (curve lies almost on the $V_{CE}$ axis).
• Active region: the emitter-base junction is forward biased and the collector-base junction reverse biased; $I_C\approx\beta I_B$ and the curves are nearly flat ($I_C$ almost independent of $V_{CE}$). …