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1
GATE ECE 2002
MCQ (Single Correct Answer)
+2
-0.6
In a negative feedback amplifier using voltage - Series (i.e., voltage - sampling, series mixing) feedback
A
$${R_i}$$ decreases and $${R_0}$$ decreases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)
B
$${R_i}$$ decreases and $${R_0}$$ increases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)
C
$${R_i}$$ increases and $${R_0}$$ decreases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)
D
$${R_i}$$ increases and $${R_0}$$ increases
($${R_i}$$ and $${R_0}$$ denote the input and outout resistances respectively)
2
GATE ECE 2000
MCQ (Single Correct Answer)
+2
-0.6
The most commonly used Amplifier in sample and hold circuit is
A
A unity gain inverting Amplifier
B
A unity gain non-inverting inverting Amplifier
C
An inverting Amplifier with a gain of 10.
D
An inverting Amplifier with a gain of 100.
3
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
An amplifier has an open loop gain of 100, an input impedance of 1 k$$_\Omega $$, and an output impedance of 100 $$_\Omega $$ . A feedback network with a feedback factor of 0.99 is connected to the amplifier an a voltage series feedback mode. The new input and output impedance respectively are
A
$$10\,\Omega \,and\,1\,\Omega $$
B
$$10\,\Omega \,and\,10\,\Omega $$
C
$$100 k\,\Omega \,and\,1\,\Omega $$
D
$$100 k\,\Omega \,and\,1 \,\Omega $$
4
GATE ECE 1999
MCQ (Single Correct Answer)
+2
-0.6
Negative feedback in an amplifier
A
Reduces gain
B
Increase frequency and phase distortions
C
Reduces bandth
D
Increase Noise
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General Aptitude
Verbal Ability Logical Reasoning Numerical Ability
Network Theory
Network Elements State Equations For Networks Network Graphs Miscellaneous Sinusoidal Steady State Response Network Theorems Two Port Networks Transient Response
Microprocessors
Pin Details of 8085 and Interfacing with 8085 Instruction Set and Programming with 8085
Signals and Systems
Discrete Fourier Transform and Fast Fourier Transform Discrete Time Signal Fourier Series Fourier Transform Continuous Time Signal Laplace Transform Fourier Transform Representation of Continuous Time Signal Fourier Series Transmission of Signal Through Continuous Time LTI Systems Miscellaneous Sampling Continuous Time Linear Invariant System Discrete Time Linear Time Invariant Systems Discrete Time Signal Z Transform Transmission of Signal Through Discrete Time Lti Systems
Electromagnetics
Maxwell Equations Transmission Lines Uniform Plane Waves Antennas Waveguides Miscellaneous
Digital Circuits
Sequential Circuits Number System and Code Convertions Logic Gates Combinational Circuits Semiconductor Memories Logic Families Analog to Digital and Digital to Analog Converters Boolean Algebra
Electronic Devices and VLSI
IC Basics and MOSFET PN Junction BJT and FET Semiconductor Physics
Control Systems
Time Response Analysis Signal Flow Graph and Block Diagram State Space Analysis Basic of Control Systems Compensators Root Locus Diagram Stability Frequency Response Analysis
Communications
Fundamentals of Information Theory Noise In Digital Communication Digital Communication Systems Random Signals and Noise Analog Communication Systems
Engineering Mathematics
Probability and Statistics Linear Algebra Complex Variable Transform Theory Vector Calculus Differential Equations Calculus Numerical Methods
Analog Circuits
Frequency Response Operational Amplifier Power Amplifier Diodes Oscillators Feedback Amplifier 555 Timer Bipolar Junction Transistor FET and MOSFET
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