What is the exam pattern and passing mark for GTU Mechanical Design of Process Equipments (3170514)?

The GTU theory examination carries 70 total marks with a duration of 2.5 Hours. Minimum passing criteria is 23 marks (33%). The paper consists of 5 main questions with official marking breakdown and internal choices.

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The official GTU question paper PDF is linked directly from Gujarat Technological University's official examination archive. You can view the full paper online or download the original file.

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Gujarat Technological UniversitySummer 2026 examination

GTU 3170514 Mechanical Design of Process Equipments Summer 2026 Question Paper & PDF

B.E. · Chemical Engineering · Semester 7 · Subject code 3170514

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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.1

14 Marks

(a)

3 marks

Define the terms:

i)Ductility

ii)Elasticity

iii)Creep.

(b)

4 marks

Write a short note on corrosion allowance and its importance in design.

(c)

7 marks

Define the two most important stresses generated in a thin cylindrical shell and discuss the classification of unfired pressure vessels as per IS–2825.

Q.2

14 Marks

(a)

3 marks

Discuss the mechanical design of a Torispherical head.

(b)

4 marks

Describe in brief the concepts of 'Design Pressure' and 'Design Temperature.'

(c)

7 marks

Discuss the calculation of shell-side pressure drop for a shell and tube heat exchanger.

(c)

7 marks

Discuss about different types of flange facings with neat figures. Mention the merits of each flange over others.

Q.3

14 Marks

(a)

3 marks

State the industrial uses of Propeller, Paddle, and Turbine agitators.

(b)

4 marks

Define Gasket Seating Stress and Gasket Factor.

(c)

7 marks

A cylindrical vessel 14 ft ID and 0.3125 inch thickness has ring stiffeners located at 40 in spacing & it is subjected to an external pressure of 15 psi at a temperature of 700 °F. The material of both the vessel and stiffeners is Carbon Steel with a yield stress of 30,000 – 38,000 psi. Modulas elasticity of carbon steel is 170 × 10³ N/mm², μ = 0.3. Determine :

1)Allowable external pressure for a factor of safety of 3.

2)If Pcmin = 58 psi, the stiffener ring requirements for the vessel .

(a)

3 marks

Discuss the purpose of providing a reinforcement pad for a nozzle.

(b)

4 marks

Discuss about the mechanical design of self-supporting roof for storage tanks.

(c)

7 marks

A Reactor (ID=800 mm) with hemispherical head at the bottom. Inside working pressure is 75 kgf/cm² gauge & working temperature is 70°C. Reactor is covered with plain jacket such that 75% length of shell & bottom hemispherical head are covered with jacket. Cooling water is circulated inside the jacket by pumping with a centrifugal pump having a shut off discharge pressure 6 kgf/cm²(g). The hemispherical head is fabricated from SA 516 Grade 70. (The maximum allowable stress at design temperature = 610 kgf/cm²). Modulus of Elasticity of plate material (E) = 193 x 10³ N/mm², μ = 0.3, ρ = 7830 Kg/m³, Joint efficiency J = 0.85, Corrosion allowance= 3 mm, straight flange=120 mm. Determine:

1)Thickness of the head

2)Weight of the fabricated hemispherical head.

Q.4

14 Marks

(a)

3 marks

State the function of a dyke wall in a storage tank farm.

(b)

4 marks

Discuss the design procedure and steps for a Saddle support.

(c)

7 marks

Discuss the various types of stresses induced in the shell of a distillation column with their design equations.

(a)

3 marks

Explain 'Radiography Test' used for welding of pressure vessels.

(b)

4 marks

Explain different types of supports used for a tall vertical tower.

(c)

7 marks

Discuss the shell thickness determination steps for a Distillation Column.

Q.5

14 Marks

(a)

3 marks

Explain the function of:

i)Baffles

ii)Tie rods

iii)Spacers in heat exchangers.

(b)

4 marks

Explain the various types of tray supports used in vertical tall towers.

(c)

7 marks

Discuss the stepwise procedure for the design of a Skirt support.

(a)

3 marks

Discuss the terms: Poisson’s Ratio and Moment of Inertia.

(b)

4 marks

Briefly explain the methods for the design of a Reinforcement pad.

(c)

7 marks

Explain the design procedure for Saddle Supports for a horizontal pressure vessel.

Other Semester 7 subjects

BE Chemical

2170501

Chemical Reaction Engineering - II

2170502

Process Equipment Design -II

2170507

Computer Aided Process Synthesis

3170501

Chemical Reactions Engineering II

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About this paper

Official Gujarat Technological University (GTU) examination paper for Mechanical Design of Process Equipments (Summer 2026, B.E. · Chemical Engineering, Sem 7). 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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