Gujarat Technological UniversitySummer 2026 examination

GTU 3151913 Oil Hydraulics And Pneumatics Summer 2026 Question Paper & PDF

B.E. · Mechanical Engineering · Semester 5 · Subject code 3151913
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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
Draw the symbol of
1)Bi-directional variable displacement pump
2)Pressure relief valve
3)4/3 directional control valve.
(b)
4 marks
State the Pascal’s law and explain Bramah’s press principle.
(c)
7 marks
Compare: Hydraulic system with Pneumatic system.

Q.2

14 Marks
(a)
3 marks
Write desirable properties of hydraulic oil.
(b)
4 marks
Why the Fluid Power System is called muscle of industry?
(c)
7 marks

What is purpose of filter in hydraulic system? Explain any two filter with purpose and location in hydraulic system.

(c)
7 marks

Write short note on classification of hydraulic fluid and briefly explain fire resistance fluids.

Q.3

14 Marks
(a)
3 marks
What is positive displacement pump? Write its advantages.
(b)
4 marks
Draw basic circuit for control of double acting cylinder.
(c)
7 marks

List different pressure control valves giving its application. Explain construction and working of any one in detail with the help of neat sketch.

(a)
3 marks
Which are the sources of heat generation in hydraulic system?
(b)
4 marks
Classify DCV according to method of actuation.
(c)
7 marks

Classify the pumps used for the hydraulic system and explain external and internal gear pump with neat sketches.

Q.4

14 Marks
(a)
3 marks
Describe the cushioning in brief
(b)
4 marks
Write a short note on the Twin pressure and Quick Exhaust valve.
(c)
7 marks

Cite the classification of check valves and explain the function of pilot- operated check valve, giving the necessary drawing.

(a)
3 marks

Classify air compressors. Write a short note on selection criteria of compressor.

(b)
4 marks

Draw a circuit for operation of single acting pneumatic cylinder using push button operated 3/2 DC valve.

(c)
7 marks
Give difference between Meter-in and Meter-out circuit.

Q.5

14 Marks
(a)
3 marks
Which are the different logics can be used in pneumatic circuit design?
(b)
4 marks
Which are the different control members in control chain?
(c)
7 marks

Develop and explain hydraulic sequential circuit to operate two double acting cylinders.

(a)
3 marks

Describe advantages and disadvantages of automation in fluid power system

(b)
4 marks

Give classification of automation in industry. Discuss the role of automation in hydraulic and pneumatic industry

(c)
7 marks
Develop pneumatic circuit for OR logic.

More Oil Hydraulics And Pneumatics papers

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Other Semester 5 subjects

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2151902
Theory of Machines
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2151908
Control Engineering
2151909
Heat Transfer

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About this paper

Official Gujarat Technological University (GTU) examination paper for Oil Hydraulics And Pneumatics (Summer 2026, 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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