Q.1
14 Marks(a)
Discuss the characterization of solid particles.
(b)
Define sphericity. Calculate the sphericity of a solid particle of cubical shape.
(c)
Describe the working and construction of Trommels with neat sketch.
Gujarat Technological UniversityWinter 2025 examination
GTU 3150502 Mechanical Operations Winter 2025 Question Paper & PDF
B.E. · Chemical Engineering · Semester 5 · Subject code 3150502
- Total
- 70 marks
- To pass
- 23 marks (33%)
- Duration
- 2.5 Hours 10:30 AM – 1:00 PM
- Questions
- 5 with internal choice
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Q.2
14 Marks(a)
Which analysis is more preferable differential or cumulative? How?
(b)
A set of crushing rolls of 1000 mm diameter by 375 mm width of face. Minimum spacing between two rolls is 10 mm and the angle of nip is 30. What is the maximum permissible size of feed?
(c)
Classify comminuting equipment and give suitable industrial application of it.
OR
(c)
A Black jaw crusher is used for crushing limestone such that the average size of the particles is reduced from 50mm to 12 mm with energy consumption of 50 W*hr/metric ton. Calculate the energy consumption for crushing the same material from average size of 75mm to 20mm. (a) Using Rittinger's law; (b) using Kick's law (c) Bond’s law. Work index=12.74.
Q.3
14 Marks(a)
Discuss the classification of filtration with suitable examples.
(b)
Discuss Filter media and Filter aids.
(c)
Explain construction and working of continuous rotary drum filter.
OR
(a)
Differentiate clarifier and classifier.
(b)
Explain construction and working of the Hydrocyclones separator.
(c)
Explain in detail the working of batch sedimentation with application.
Q.4
14 Marks(a)
Discuss importance of mixing and agitation.
(b)
Write short note on ribbon blender.
(c)
Describe the different mixing equipments used for solid mixing in brief.
OR
(a)
Enlist different types of flow pattern induced in an agitated vessel.
(b)
Write short note on equipment used for cohesive solid mixing
(c)
Explain different types of impellers for agitation of liquids along with application.
Q.5
14 Marks(a)
List out the advantages and disadvantages of fluidization.
(b)
Discuss minimum fluidization velocity and pressure drop in fluidized bed with neat sketch.
(c)
With neat sketch, explain pneumatic conveying system with advantages and disadvantages.
OR
(a)
List different types of industrial conveyers.
(b)
Discuss the different criteria’s for selection of conveyors.
(c)
Explain in detail: Types of fluidization.
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 (Winter 2025, 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.