Analog Circuits
Bipolar Junction Transistor
Marks 1Marks 2Marks 5
Operational Amplifier
Marks 1Marks 2Marks 5Marks 8
Frequency Response
Marks 1Marks 2Marks 5
Feedback Amplifier
Marks 1Marks 2
Power Amplifier
Marks 1Marks 2
1
GATE ECE 2025
MCQ (More than One Correct Answer)
+1
-0
Which of the following statements is/are TRUE with respect to ideal MOSFET-based DCcoupled single-stage amplifiers having finite load resistors?
A
The common-gate amplifier has an infinite input resistance
B
The common-source amplifier has an infinite input resistance
C
The input and output voltages of the common-source amplifier are in phase
D
The input and output voltages of the common-drain amplifier are in phase
2
GATE ECE 2024
MCQ (Single Correct Answer)
+1
-0.33

In the circuit below, assume that the long channel NMOS transistor is biased in saturation. The small signal trans-conductance of the transistor is $g_m$. Neglect body effect, channel length modulation, and intrinsic device capacitances. The small signal input impedance $Z_{in}(j\omega)$ is _______

GATE ECE 2024 Analog Circuits - FET and MOSFET Question 5 English
A

$\frac{-g_m}{{C_1C_L \omega^2}} + \frac{1}{{j\omega C_1}} + \frac{1}{{j\omega C_L}}$

B

$\frac{g_m}{{C_1C_L \omega^2}} + \frac{1}{{j\omega C_1}} + \frac{1}{{j\omega C_L}}$

C

$\frac{1}{{j\omega C_1}} + \frac{1}{{j\omega C_L}}$

D

$\frac{-g_m}{{C_1C_L \omega^2}} + \frac{1}{{j\omega C_1} + j\omega C_L}$

3
GATE ECE 2023
MCQ (Single Correct Answer)
+1
-0.33

In the circuit shown below, $$V_1$$ and $$V_2$$ are bias voltages. Based on input and output impedances, the circuit behaves as a

GATE ECE 2023 Analog Circuits - FET and MOSFET Question 6 English

A
voltage controlled voltage source.
B
voltage controlled current source.
C
current controlled voltage source.
D
current controlled current source.
4
GATE ECE 2022
MCQ (Single Correct Answer)
+1
-0.33

Consider the CMOS circuit shown in the figure (substrates are connected to their respective sources). The gate width (W) to gate length (L) ratios $$\left( {{W \over L}} \right)$$ of the transistors are as shown. Both the transistors have the same gate oxide capacitance per unit area. For the pMOSFET, the threshold voltage is $$-$$1 V and the mobility of holes is $$40{{c{m^2}} \over {V.s}}$$. For the nMOSFET, the threshold voltage is 1 V and the mobility of electrons is $$300{{c{m^2}} \over {V.s}}$$. The steady state output voltage V0 is ___________.

GATE ECE 2022 Analog Circuits - FET and MOSFET Question 7 English

A
equal to 0 V
B
more than 2 V
C
less than 2 V
D
equal to 2 V
GATE ECE Subjects
Signals and Systems
Network Theory
Control Systems
Digital Circuits
General Aptitude
Electronic Devices and VLSI
Analog Circuits
Engineering Mathematics
Microprocessors
Communications
Electromagnetics