1

GATE ECE 2013

MCQ (Single Correct Answer)

+2

-0.6

The ac schematic of an NMOS common-source stage is shown in the figure below, where part of
the biasing circuits has been omitted for simplicity. For the n -channel MOSFET M, the
transconductance g

_{m}= 1 mA/V, and body effect and channel length modulation effect are to be neglected. The lower cutoff frequency in Hz of the circuit is approximately at2

GATE ECE 2006

MCQ (Single Correct Answer)

+2

-0.6

An n-channel depletion MOSFET has following two points on its I

_{D}- V_{GS}curve:(i)V_{GS} = 0 at I_{d} = 12 mA and

(ii)V_{GS} = -6 Volts at Z_{o} =$$\infty $$

Which of the following Q-points will give the highest transconductance gain for small signals?

3

GATE ECE 2005

MCQ (Single Correct Answer)

+2

-0.6

Given

$${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$

$${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$

Z_{i} and Z_{o} of the circuit are respectively

4

GATE ECE 2005

MCQ (Single Correct Answer)

+2

-0.6

Given

$${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$

$${r_d} = 20K\Omega ,\,\,{I_{DSS}}\, = \,10mA,\,\,{V_P} = - 8V$$

Transconductance in milli-Siemens (mS) and voltage gain of the amplifier are respectively.

Questions Asked from FET and MOSFET (Marks 2)

Number in Brackets after Paper Indicates No. of Questions

GATE ECE Subjects

Signals and Systems

Representation of Continuous Time Signal Fourier Series Discrete Time Signal Fourier Series Fourier Transform Discrete Time Signal Z Transform Continuous Time Linear Invariant System Transmission of Signal Through Continuous Time LTI Systems Discrete Time Linear Time Invariant Systems Sampling Continuous Time Signal Laplace Transform Discrete Fourier Transform and Fast Fourier Transform Transmission of Signal Through Discrete Time Lti Systems Miscellaneous Fourier Transform

Network Theory

Control Systems

Digital Circuits

General Aptitude

Electronic Devices and VLSI

Analog Circuits

Engineering Mathematics

Microprocessors

Communications

Electromagnetics