1

GATE ECE 2016 Set 3

MCQ (Single Correct Answer)

+2

-0.6

Consider the charge profile shown in the figure. The resultant potential distribution is best
described by

2

GATE ECE 2016 Set 2

Numerical

+2

-0

Consider a region of silicon devoid of electrons and holes, with an ionized donor density of
$${\mathrm N}_\mathrm d^+=10^{17}\;\mathrm{cm}^{-3}$$. The electric field at x = 0 is 0 V/cm and the electric field at x = L is
50 kV/cm in the positive x direction. Assume that the electric field is zero in the y and z directions
at all points.

Given q = 1.6 × 10^{−19} coulomb, $$\varepsilon$$_{0} = 8.85 × 10^{−14} F/cm, $$\varepsilon$$_{r} = 11.7 for silicon, the value of L in
nm is ________.

Your input ____

3

GATE ECE 2015 Set 3

MCQ (Single Correct Answer)

+2

-0.6

The electric field profile in the depletion region of a p-n junction in equilibrium is shown
in the figure. Which one of the following statements is NOT TRUE?

4

GATE ECE 2015 Set 1

Numerical

+2

-0

The built-in potential of an abrupt p-n junction is 0.75V. If its junction capacitance
(C

_{J}) at a reverse bias (V_{R}) of 1.25V is 5pF, the value of C_{J}(in pF) when V_{R}= 7.25V is ___________.Your input ____

Questions Asked from PN Junction (Marks 2)

Number in Brackets after Paper Indicates No. of Questions

GATE ECE 2017 Set 2 (1)
GATE ECE 2016 Set 3 (1)
GATE ECE 2016 Set 2 (1)
GATE ECE 2015 Set 3 (1)
GATE ECE 2015 Set 1 (1)
GATE ECE 2014 Set 2 (1)
GATE ECE 2013 (1)
GATE ECE 2009 (1)
GATE ECE 2007 (1)
GATE ECE 2005 (2)
GATE ECE 2003 (2)
GATE ECE 1993 (1)
GATE ECE 1992 (1)
GATE ECE 1991 (2)
GATE ECE 1987 (1)

GATE ECE Subjects

Network Theory

Control Systems

Electronic Devices and VLSI

Analog Circuits

Digital Circuits

Microprocessors

Signals and Systems

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

Communications

Electromagnetics

General Aptitude