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1
GATE ECE 2011
MCQ (Single Correct Answer)
+1
-0.3
Drift current in the semiconductors depends upon
A
only the electric field
B
only the carrier concentration gradient
C
both the electric field and the carrier concentration
D
both the electric field and the carrier concentration gradient
2
GATE ECE 2008
MCQ (Single Correct Answer)
+1
-0.3
Which of the following is true?
A
A silicon wafer heavily doped with boron is a p+ substrate
B
A silicon wafer lightly doped with boron is a p+ substrate
C
A silicon wafer heavily doped with arsenic is a p+ substrate
D
A silicon wafer lightly doped with arsenic is a p+ substrate
3
GATE ECE 2006
MCQ (Single Correct Answer)
+1
-0.3
Under low level injection assumption, the injected minority carrier current for an extrinsic semiconductor is essentially the
A
diffusion current
B
drift current
C
recombination current
D
induced current
4
GATE ECE 2006
MCQ (Single Correct Answer)
+1
-0.3
The concentration of minority carriers in an extrinsic semiconductor under equilibrium is:
A
directly proportional to the doping concentration
B
inversely proportional to the doping concentration
C
directly proportional to the intrinsic concentration
D
inversely proportional to the intrinsic concentration
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GATE ECE Subjects
Network Theory
State Equations For Networks Network Elements Network Theorems Two Port Networks Transient Response Sinusoidal Steady State Response Network Graphs 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
Electronic Devices and VLSI
Semiconductor Physics PN Junction BJT and FET IC Basics and MOSFET
Analog Circuits
Bipolar Junction Transistor FET and MOSFET Oscillators Operational Amplifier 555 Timer Frequency Response Diodes Feedback Amplifier Power Amplifier
Digital Circuits
Logic Gates Boolean Algebra Analog to Digital and Digital to Analog Converters Sequential Circuits Combinational Circuits Logic Families Number System and Code Convertions Semiconductor Memories
Microprocessors
Instruction Set and Programming with 8085 Pin Details of 8085 and Interfacing with 8085
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
Communications
Analog Communication Systems Digital Communication Systems Random Signals and Noise Fundamentals of Information Theory Noise In Digital Communication
Electromagnetics
Waveguides Antennas Miscellaneous Transmission Lines Maxwell Equations Uniform Plane Waves
General Aptitude
Numerical Ability Logical Reasoning Verbal Ability
Engineering Mathematics
Linear Algebra Calculus Vector Calculus Complex Variable Probability and Statistics Differential Equations Numerical Methods Transform Theory
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