Q.1
14 Marks(a)
Give Significance of Damping co-efficient.
(b)
Write the statements for initial value theorem and final value theorem.
(c)
Discuss Servo and Regulatory mechanism.
Gujarat Technological UniversitySummer 2023 examination
GTU 3150504 Instrumentation and Process Control Summer 2023 Question Paper & PDF
B.E. · Chemical Engineering · Semester 5 · Subject code 3150504
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 2:30 PM – 5:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Explain Impulse input in detail.
(b)
Derive transfer function of the Mixing process.
(c)
Differentiate Interacting and Non interacting systems.
OR
(c)
A mercury thermometer having a time constant of 0.1 min is placed in a temperature bath at 100°F and allowed to come to equilibrium with the bath. At time , the temperature of the bath begins to vary sinusoidally about its average temperature of 100°F with an amplitude of 2°F. If the frequency of oscillation is cycles/min, plot the ultimate response of the thermometer reading as a function of time. What is the phase lag?
Q.3
14 Marks(a)
Place the following transfer function in standard first-order form, and identify the time constant and the steady state gain.
(b)
Explain the statement for sinusoidal response. “The output lags behind the input by an angle frequency f and the signal is attenuated”.
(c)
Derive equation of Offset for PI controller.
OR
(a)
Discuss ON/OFF controller.
(b)
Explain difference between Negative and Positive feedback control system.
(c)
Derive the transfer function for the liquid level which exhibits first-order dynamics as the Head responds to changes in the Flow input to the tank.
Q.4
14 Marks(a)
Define: Accuracy, Span, Drift
(b)
Explain difference between Air to open and Air to close valve.
(c)
Explain component parts of Block diagram of a simple control system with figure.
OR
(a)
Explain Phase margin and Gain Margin.
(b)
Write the statements of Routh Theorem.
(c)
A step change of magnitude 4 is introduced into a system having the transfer function
Determine (a) Percent overshoot (b) Rise time (c) Period of oscillation (d) Natural period of oscillation
Q.5
14 Marks(a)
Discuss working of Bourdon Gauge.
(b)
Give Classification of liquid level measurement systems.
(c)
Discuss Ziegler-Nichols method for Controller tuning.
OR
(a)
Discuss Dip effect in filled system thermometer.
(b)
Explain PLC (Programable Logic Controller) and DCS (Distributed Control System).
(c)
Discuss construction and working of Rota meter.
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About this paper
Official Gujarat Technological University (GTU) examination paper for Instrumentation and Process Control (Summer 2023, B.E. · Chemical 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.