Q.1
14 Marks(a)
Define:
1)System
2)Output
3)Input
(c)
What is transfer function? Define Pole, Zero, Gain and Characteristic equation with examples.
Gujarat Technological UniversitySummer 2024 examination
GTU 3131101 Control Systems Summer 2024 Question Paper & PDF
B.E. · EC Engineering · Semester 3 · Subject code 3131101
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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14 of 25 questions on this paper were also asked in other years. 2 more are types of question GTU sets again with new data. Each is marked below with the years it appeared.See all 31 repeated 3131101 questions, most asked first
Q.2
14 Marks(a)
List properties of Laplace Transform.
(c)
Determine the Transfer function Vo (s) /Vi (s) of the electrical system shown in given
Also asked in Summer 2025 Q3c OR
OR
(c)
Discuss rules for block diagram reduction with example
Also asked in Summer 2026 Q1c, Winter 2025 Q1c, Summer 2025 Q4c OR
Q.3
14 Marks(b)
Discuss various standard inputs used in the control system analysis.
Also asked in Summer 2026 Q1a, Winter 2025 Q1a, Summer 2025 Q3a
(c)
Explain the mathematical modelling of fundamentals components of mechanical rotational system.
OR
(a)
Define Type and order of the system
(b)
Derive the expression for static error coefficients.
Also asked in Summer 2026 Q5b, Winter 2025 Q5b, Summer 2025 Q4c
(c)
What is force voltage analogous system? Which are analogous quantities according to this method?
Also asked in Summer 2026 Q3b, Winter 2025 Q3b, Summer 2025 Q1b
Q.4
14 Marks(a)
Define:
1)Undamped system
2)Damped frequency of oscillation
3)Natural frequency of oscillation
(b)
Analyze necessary conditions for Hurwitz’s criterion.
(c)
Sketch the root locus of the system whose open loop transfer function is G(s) = K / s (s+2) (s+4). Find the value of K so that the damping ratio of the closed loop system is 0.5.
Also asked in Summer 2025 Q2c OR
OR
(c)
Discuss general steps to solve the problem on root locus.
Also asked in Summer 2026 Q3c, Winter 2025 Q3c, Summer 2025 Q2c
Q.5
14 Marks(a)
Define:
1)Conditional stable system
2)Unstable system
3)Marginally
stable system
Also asked in Summer 2026 Q5a, Summer 2025 Q4a
(c)
Explain the following controllers
1)P controller
2)PI controller
3)PID
controller
Also asked in Summer 2025 Q3c
OR
(a)
Define:
1)Gain margin
2)Phase margin
3)cut-off frequency
Also asked in Summer 2026 Q5a OR, Winter 2025 Q5a OR, Summer 2025 Q5a
(b)
Consider a system with open loop transfer function as G(s)H(s) = 10 / s, obtain its polar plot.
(c)
A unity feedback control system has G(s) = 80 / s (s+2) (s+20). Draw the bode plot.
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About this paper
Official Gujarat Technological University (GTU) examination paper for Control Systems (Summer 2024, B.E. · EC Engineering, Sem 3). Features complete 70-mark regular & remedial examination pattern, official marking distribution across all 5 questions, and direct 1-click official PDF download.
Transcribed for student exam preparation from Gujarat Technological University official examination archives. Questions, syllabus guidelines, and curriculum marking schemes remain the intellectual property of Gujarat Technological University.