B.TechSemester 62021-22Control SystemKECZ602

Control System (KECZ602) - AKTU Question Paper 2021-22

B.Tech · Semester 6 · Free PDF Download

This is the official AKTU Control System Previous Year Question Paper for B.Tech Semester 6, academic session 2021-22. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech

Semester:Semester 6

Session:2021-22

University:AKTU / UPTU

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Questions Asked in 2021-22

Control System (KECZ602) — complete question paper

Section AAttempt all q u e s t i o n s i n b r i e f . 2*10 = 20

a
Define Loop and Self Loop with suitable diagram 1
b
Draw the Elementary Block Diagram of close loop system. 1
c
Enlist the condition for a system to be Observable. 2
d
Enlist any two properties of state transition matrix. 2
e
Define Settling time and Maximum peak overshoot. 3
f
Define Rise time and Peak Time. 3
h
Describe the Angle of Departure. 4 (i) Define Gain Cross Over Frequency. 5 (j) Define the term Gain Margin and Phase Margin. 5

Section BAttempt any three o f t h e f o l l o w i n g : 10*3 = 30

a
Obtain overall Transfer function for the given block diagram shown in Figure using Block reduction Method
b
Find out the Response for the given systems using parallel decomposition method also sketch its associated state space model
c
Consider a unity feedback sys tem with a closed transfer function Determine open loop transfer function. Show that the steady state error with unit ramp input is given by
d
The characteristic equation of a feedback control system is Determine the range of k for the system to be stable
e
A single loop feedback control system has open loop transfer function .Sketch the Polar Plot

Section CAttempt any one p a r t o f t h e f o l l o w i n g : 10*1 = 10

a
Find the C/R and C/D ratio for the given System
b
Using Mason’s gain formula, evaluate the overall transfer function
a
Find out the Response for the given systems using parallel decomposition method also sketch its associated state space model
b
Examine the Controllability and Observability of the following system
a
The open loop transfer function of a unity feedback system is given by Where ‘K’ & ‘T’ are positive constants. By what factor should the amplifier gain be reduced so that the peak overshoot of unit step response of the system is reduced from 80% to 20%
b
Evaluate the unit step response with proper derivation for a Critically damped 2nd order system
a
For a unity feedback system of O.L.T.F is given by
a
Sketch the Root locus for
b
At what value of K, the system become unstable
b
For a unity feedback system of O.L.T.F is given by
a
Sketch the Root locus for
b
At what value of K, the system become stable
a
Sketch the Bode Plot for the given system and comment on stabil ity of the used systems
b
Find out the Gain Cross Over Frequency, Phase cross over Freque ncy, Gain Margin and Phase Margin for the given system

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

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