[amp_mcq option1=”Vds = Vgs – Vt” option2=”Vgs lesser than Vt” option3=”Vds lesser than Vgs – Vt” option4=”Vds greater than Vgs – Vt” correct=”option4″]
The correct answer is D. Vds greater than Vgs – Vt.
The non-saturated region is the region of operation of a MOSFET where the drain-source voltage (Vds) is greater than the gate-source voltage (Vgs) minus the threshold voltage (Vt). In this region, the MOSFET is operating in the linear region and the drain current (Ids) is proportional to the drain-source voltage.
The other options are incorrect because they do not describe the condition for non-saturated operation of a MOSFET.
Option A, Vds = Vgs – Vt, is the condition for the MOSFET to be in the saturation region. In this region, the drain current is independent of the drain-source voltage and is determined by the gate-source voltage.
Option B, Vgs lesser than Vt, is the condition for the MOSFET to be in the cutoff region. In this region, the drain current is zero and the MOSFET is turned off.
Option C, Vds lesser than Vgs – Vt, is not a valid condition for the operation of a MOSFET.