1
GATE ECE 2026
Numerical
+2
-0.67

An $n$-channel MOSFET is connected as shown in the Figure.

Assume $\mathrm{V}_{\mathrm{TH}}=1 \mathrm{~V}, V_{D D}=5 \mathrm{~V}$, and $\mu C_{O x}\left(\frac{W}{L}\right)=2 \mathrm{mAV}^{-2}$ and neglect channel length modulation effects.

The gate voltage ( $V_G$ ) of the n-channel MOSFET (in Volt) is $\_\_\_\_$ . (rounded off to two decimal places)

GATE ECE 2026 Analog Circuits - FET and MOSFET Question 1 English

Your input ____
2
GATE ECE 2025
MCQ (Single Correct Answer)
+2
-0.67

The identical MOSFETs $M_1$ and $M_2$ in the circuit given below are ideal and biased in the saturation region. $M_1$ and $M_2$ have a transconductance $g_m$ of 5 mS .

The input signals (in Volts) are:

$$ \begin{aligned} & V_1=2.5+0.01 \sin \omega t \\ & V_2=2.5-0.01 \sin \omega t \end{aligned} $$

The output signal $V_3$ (in Volts) is _ .

GATE ECE 2025 Analog Circuits - FET and MOSFET Question 7 English

A
$3+0.05 \sin \omega t$
B
$3-0.1 \sin \omega t$
C
$4+0.1 \sin \omega t$
D
$4-0.05 \sin \omega t$
3
GATE ECE 2024
MCQ (Single Correct Answer)
+2
-1.33

In the circuit shown below, the transistors $M_1$ and $M_2$ are biased in saturation. Their small signal transconductances are $g_{m1}$ and $g_{m2}$ respectively. Neglect body effect, channel length modulation and intrinsic device capacitances.

GATE ECE 2024 Analog Circuits - FET and MOSFET Question 10 English

Assuming that capacitor $C_i$ is a short circuit for AC analysis, the exact magnitude of small signal voltage gain $\left| \frac{v_{out}}{v_{in}} \right|$ is ______.

A

$g_{m2}R_D$

B

$\frac{g_{m2} R_D \left( R_B + \frac{1}{g_{m1}} \right)}{R_B + \frac{1}{g_{m1}} + R_S}$

C

$\frac{g_{m2} R_D \left( R_B + \frac{1}{g_{m1}} + R_S \right)}{R_B + \frac{1}{g_{m1}}}$

D

$\frac{g_{m2} R_D \left( \frac{1}{g_{m1}} \right)}{\frac{1}{g_{m1}} + R_S}$

4
GATE ECE 2024
Numerical
+2
-0

An NMOS transistor operating in the linear region has $I_{D}$ of 5 $\mu$A at $V_{DS}$ of 0.1 V. Keeping $V_{GS}$ constant, the $V_{DS}$ is increased to 1.5 V.

Given that $\mu_{n}C_{ox} \frac{W}{L}$ = 50 $\mu$A/$V^2$, the transconductance at the new operating point (in $\mu$A/V, rounded off to two decimal places) is ______.

Your input ____

GATE ECE Subjects

Browse all chapters by subject