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1
GATE ECE 2023
MCQ (Single Correct Answer)
+1
-0.33

A cascade of common-source amplifiers in a unity gain feedback configuration oscillates when

A
the closed loop gain is less than 1 and the phase shift is less than 180$$^\circ$$.
B
the closed loop gain is greater than 1 and the phase shift is less than 180$$^\circ$$.
C
the closed loop gain is less than 1 and the phase shift is greater than 180$$^\circ$$.
D
the closed loop gain is greater than 1 and the phase shift is greater than 180$$^\circ$$.
2
GATE ECE 2014 Set 1
MCQ (Single Correct Answer)
+1
-0.3
In the ac equivalent circuit shown in the figure, if i$${_F}$$ is very large, the type of feedback is GATE ECE 2014 Set 1 Analog Circuits - Feedback Amplifier Question 14 English
A
voltage-voltage feedback
B
voltage-current feedback
C
current-voltage feedback
D
current-current feedback
3
GATE ECE 2014 Set 1
MCQ (Single Correct Answer)
+1
-0.3
A good current buffer has
A
low input impedance and low output impedance.
B
low input impedance and high output impedance.
C
high input impedance and low output impedance.
D
high input impedance and high output impedance.
4
GATE ECE 2014 Set 2
MCQ (Single Correct Answer)
+1
-0.3
The feedback topology in the amplifier circuit (the base bias circuit is not shown for simplicity) in the figure is GATE ECE 2014 Set 2 Analog Circuits - Feedback Amplifier Question 13 English
A
Voltage shunt feedback.
B
Current series feedback.
C
Current shunt feedback.
D
Voltage series feedback.
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GATE ECE Subjects

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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
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IC Basics and MOSFET PN Junction BJT and FET Semiconductor Physics
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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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