1

GATE ECE 2002

MCQ (Single Correct Answer)

+1

-0.3

In the figure, a silicon diode is carrying a constant current of 1 mA. When the
temperature of the diode is 20°C, V

_{D}is found to be 700 mV. If the temperature rises to 40°C, V_{D}becomes approximately equal to2

GATE ECE 1998

MCQ (Single Correct Answer)

+1

-0.3

For small signal a.c. operation, a practical forward biased diode can be modeled
as

3

GATE ECE 1998

MCQ (Single Correct Answer)

+1

-0.3

The static characteristic of an adequately forward biased p-n junction is a straight
line, if the plot is of

4

GATE ECE 1995

MCQ (Single Correct Answer)

+1

-0.3

The diffusion potential across a P-N junction

Questions Asked from PN Junction (Marks 1)

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