GATE ECE 2002 | Semiconductor Physics Question 39 | Electronic Devices and VLSI

GATE ECE 2002

MCQ (Single Correct Answer)

-0.3

The intrinsic carrier concentration of silicon sample at 300^oK is $$1.5\times10^{16}/m^3$$. If after doping, the number of majority carriers is $$5\times10^{20}/m^3$$ , minority carrier density is

$$4.50\times10^{11}/m^3$$

$$3.33\times10^4/m^3$$

$$5.00\times10^{20}/m^3$$

$$3.00\times10^{-5}/m^3$$

GATE ECE 2002

MCQ (Single Correct Answer)

-0.3

The band gap of silicon at 300 K is

1.36 eV

1.10 eV

0.80 eV

0.67 eV

GATE ECE 1997

MCQ (Single Correct Answer)

-0.3

The units of $$\frac q{KT}$$ are

V^-1

J/K

GATE ECE 1995

MCQ (Single Correct Answer)

-0.3

The probability that an electron in a metal occupies the Fermi-level at any temperature (> 0 K)

$$0$$

0.5

1.0

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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

Network Elements Network Theorems Transient Response Sinusoidal Steady State Response Two Port Networks Network Graphs State Equations For Networks Miscellaneous

Control Systems

Basic of Control Systems Signal Flow Graph and Block Diagram Time Response Analysis Stability Root Locus Diagram Frequency Response Analysis Compensators State Space Analysis

Digital Circuits

Number System and Code Convertions Boolean Algebra Logic Gates Combinational Circuits Sequential Circuits Semiconductor Memories Logic Families Analog to Digital and Digital to Analog Converters

General Aptitude

Verbal Ability Logical Reasoning Numerical Ability

Electronic Devices and VLSI

Semiconductor Physics PN Junction BJT and FET IC Basics and MOSFET

Analog Circuits

Diodes Bipolar Junction Transistor Frequency Response FET and MOSFET Oscillators Operational Amplifier Feedback Amplifier Power Amplifier 555 Timer

Engineering Mathematics

Linear Algebra Calculus Vector Calculus Probability and Statistics Differential Equations Complex Variable Numerical Methods Transform Theory

Microprocessors

Pin Details of 8085 and Interfacing with 8085 Instruction Set and Programming with 8085

Communications

Analog Communication Systems Digital Communication Systems Random Signals and Noise Fundamentals of Information Theory Noise In Digital Communication

Electromagnetics

Maxwell Equations Transmission Lines Uniform Plane Waves Waveguides Antennas Miscellaneous