Q.1
14 Marks(a)
Draw the general layout of hydraulic system. Explain the function of oil reservoir.
(b)
List down the properties of hydraulic oil.
(c)
Draw the detailed symbol of FRL unit. Explain lubricator with neat sketch.
Gujarat Technological UniversitySummer 2025 examination
GTU 3151913 Oil Hydraulics And Pneumatics Summer 2025 Question Paper & PDF
B.E. · Mechanical Engineering · Semester 5 · Subject code 3151913
- 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)
Write the application of hydraulic system and pneumatic system.
(b)
Write a short note on air receiver.
(c)
Draw symbol of filter. Explain the working of by-pass filter with neat sketch. Also state its advantages and disadvantages.
OR
(c)
Discuss hydrostatic transmission system with its advantages and disadvantages.
Q.3
14 Marks(a)
Classify flow control valves.
(b)
Write a short note on the Quick Exhaust valve.
(c)
Explain construction and operation of shuttle valve. Illustrate its application through a typical pneumatic circuit.
OR
(a)
How does a pressure relief valve differ from a pressure reducing valve?
(b)
State different types of Accumulator. Explain one in detail.
(c)
Explain construction and operation of time delay valve. Illustrate its application in setting delay in closing time through a typical pneumatic circuit.
Q.4
14 Marks(a)
What are different sources of heat generation and what is the effect of heat generated in hydraulic system.
(b)
Sketch and explain pneumatic circuit using quick exhaust valve.
(c)
Explain power losses in flow control circuits.
OR
(a)
Draw working of bleed off circuit for extension and uncontrolled for retraction.
(b)
List some basic and industrial circuits.
(c)
Draw pneumatic circuit for operating DAC by 4/3 lever operated – detent type DCV.
Q.5
14 Marks(a)
Give difference between Meter-in and Meter-out circuit.
(b)
Draw basic circuit for control of single acting cylinder using 3/2 handle operated-spring return DCV.
(c)
Draw pneumatic to operate two DAC in sequence using limit switch and double solenoid 4/2 DCV. Explain in brief.
OR
(a)
With general layout explain the automation in fluid power system.
(b)
State advantages and disadvantages of automation.
(c)
Give classification of automation. Discuss the role of automation in pneumatic and hydraulic control systems.
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Other Semester 5 subjects
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About this paper
Official Gujarat Technological University (GTU) examination paper for Oil Hydraulics And Pneumatics (Summer 2025, 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.