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1
GATE ECE 2005
MCQ (Single Correct Answer)
+1
-0.3
Despite the presence of negative feedback, control systems still have problems of instability because the
A
Components used have nonlinearities.
B
Dynamic equations of the subsystems are not known exactly.
C
Mathematical analysis involves approximations.
D
System has large negative phase angle at high frequencies.
2
GATE ECE 1998
MCQ (Single Correct Answer)
+1
-0.3
The transfer function of a tachometer is of the form
A
Ks
B
$$\frac{\mathrm K}{\mathrm s}$$
C
$$\frac{\mathrm K}{\left(\mathrm s+1\right)}$$
D
$$\frac{\mathrm K}{\mathrm s\left(\mathrm s+1\right)}$$
3
GATE ECE 1995
MCQ (Single Correct Answer)
+1
-0.3
The transfer function of a linear system is the
A
Ratio of the output, V0(t) and input Vi(t)
B
Ratio of the derivatives of the output and the input
C
Ratio of the Laplace transform of the output and that of the input with all initial conditions zeros
D
none of these
4
GATE ECE 1994
True or False
+1
-0
Tachometer feedback in a d.c. position control system enhances stability.
A
TRUE
B
FALSE
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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
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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Network Elements State Equations For Networks Network Graphs Miscellaneous Sinusoidal Steady State Response Network Theorems Two Port Networks Transient Response
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Maxwell Equations Transmission Lines Uniform Plane Waves Antennas Waveguides Miscellaneous
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IC Basics and MOSFET PN Junction BJT and FET Semiconductor Physics
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Logic Families Analog to Digital and Digital to Analog Converters Boolean Algebra Semiconductor Memories Number System and Code Convertions Logic Gates Combinational Circuits Sequential Circuits
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Instruction Set and Programming with 8085 Pin Details of 8085 and Interfacing with 8085
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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
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Fundamentals of Information Theory Noise In Digital Communication Digital Communication Systems Random Signals and Noise Analog Communication Systems
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