Gujarat Technological UniversityWinter 2024 examination

GTU 3151908 Control Engineering Winter 2024 Question Paper & PDF

B.E. · Mechanical Engineering · Semester 5 · Subject code 3151908
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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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Q.1

14 Marks
(a)
3 marks
Define the terms: (a) Control variable (b) Manipulated Variable (c) Process
(b)
4 marks

Explain with examples: open loop and close loop control system. State their limitations also.

(c)
7 marks
Discuss force voltage and force current analogy with sketches.

Q.2

14 Marks
(a)
3 marks

Classify the type of control systems and explain time variant system with suitable example.

(b)
4 marks
Define the transfer function and discuss its characteristics.
(c)
7 marks
Obtain the transfer function of the block diagram given in fig. 1 using block diagram reduction technique.
GTU Control Engineering (3151908) Winter 2024 Question 2(c) Diagram
(c)
7 marks
Using Mason’s Gain formula, obtain the transfer function of the signal flow graph shown in fig. 2.
GTU Control Engineering (3151908) Winter 2024 Question 2 OR (c) Diagram

Q.3

14 Marks
(a)
3 marks
Define: State variable, state vector and state space
(b)
4 marks
Enlist Advantage and Disadvantages of state space analysis technique.
(c)
7 marks
Obtain a state-space representation of the system shown in
GTU Control Engineering (3151908) Winter 2024 Question 3(c) Diagram
(a)
3 marks

Explain when the system is said to be underdamped, overdamped and critically damped for a second order unity feedback control system with step input.

(b)
4 marks

Discuss the effect of adding integral control action to a first order unity feedback proportional control system with step input.

(c)
7 marks
Obtain the transfer function of the Thermal system shown in fig. 4. Assume suitable notations.
GTU Control Engineering (3151908) Winter 2024 Question 3 OR (c) Diagram

Q.4

14 Marks
(a)
3 marks
Define: Peak time, Rise time, Steady state error.
(b)
4 marks
Comment on the stability of the system defined by s4+Ks3+s2+s+1=0s^4 + Ks^3 + s^2 + s + 1 = 0.
(c)
7 marks

With usual notations, derive the unit step response of first order time invariant system.

(a)
3 marks
What is Phase margin and Gain margin? State importance of it.
(b)
4 marks
Compare Routh’s stability criteria and Nyquist stability criteria.
(c)
7 marks
Draw the root locus of the system represented by the fig. 5.
GTU Control Engineering (3151908) Winter 2024 Question 4 OR (c) Diagram

Q.5

14 Marks
(a)
3 marks
Explain nozzle -flapper amplification in a pneumatic system.
(b)
4 marks
Compare the hydraulic and pneumatic systems.
(c)
7 marks

Explain working of Hydraulic PI controller with neat sketch. State the advantages also.

(a)
3 marks
Explain tuning of PID controller in brief.
(b)
4 marks
Explain the basic components of the hydraulic control system.
(c)
7 marks

Explain pneumatic force-balance type Proportional controller with neat sketch and state limitations.

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About this paper

Official Gujarat Technological University (GTU) examination paper for Control Engineering (Winter 2024, B.E. · Mechanical Engineering, Sem 5). 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.

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