Q.1
14 Marks(a)
Define:
i)sphericity
ii)screening operation
iii)filter medium resistance
(b)
Differentiate cumulative analysis and differential analysis for separation of solids by screening operation.
(c)
Explain different crushing law in detail.
Gujarat Technological UniversitySummer 2026 examination
GTU 3150502 Mechanical Operations Summer 2026 Question Paper & PDF
B.E. · Chemical Engineering · Semester 5 · Subject code 3150502
- 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)
What is the Power number? What is its significance?
(b)
A cylindrical particle of height equal to twice the diameter, calculate the value of its sphericity.
(c)
What are the various parameters affecting screening operations? Explain any three of them in detail.
OR
(c)
Explain important characteristics, selection criteria and applications of paddles.
Q.3
14 Marks(a)
State difference between ideal screen and actual screen.
(b)
Enlist major objectives of size reduction.
(c)
Explain construction and working of cyclone separator with a neat labeled diagram.
OR
(a)
Enlist advantages of the ball mill.
(b)
Enlist major applications of fluidization.
(c)
Explain construction and working of batch centrifuge with a neat labeled diagram.
Q.4
14 Marks(a)
Define:
i)drag coefficient
ii)bulk density
iii)filtration.
(b)
Differentiate between particulate fluidization and aggregative fluidization.
(c)
Define: terminal settling velocity. Calculate the settling velocity of spherical steel particles having 0.038 cm diameter, settling in an oil of specific gravity 0.82 and viscosity of 0.1poise. Consider a laminar settling zone. Density of steel particles=7.87 g/cc.
OR
(a)
Enlist different types of continuous filters.
(b)
Explain working and advantages of a bucket elevator.
(c)
With neat diagram explain principle, construction and working of a gyratory crusher.
Q.5
14 Marks(a)
Enlist different types of flow pattern induced in an agitated vessel.
(b)
Explain working and advantages of a screw conveyor.
(c)
A six blade turbine agitator of diameter 60 cm is installed centrally in tank with flat bottom of diameter 180 cm, at a height of 60 cm from the bottom. The tank is filled with a solution of viscosity of 10 cp and of 1.45 gm/ml density. The speed of agitation is 90 rpm. The tank is baffled. Calculate the power required. Data: Power number = NP = 1.05 for NRe > 300
OR
(a)
Enlist names of solid mixing equipments.
(b)
Discuss important characteristics of a filter medium.
(c)
Draw a neat diagram and explain construction and working of a plate and frame filter press.
More Mechanical Operations papers
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Other Semester 5 subjects
BE Chemical
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About this paper
Official Gujarat Technological University (GTU) examination paper for Mechanical Operations (Summer 2026, 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.