Q.1
14 Marks(a)
List out various mechanical operations used in chemical industries with suitable example.
(b)
Explain ideal screen and actual screen with comparison.
(c)
Write a short note on ball mill with derivation of critical speed equation.
Gujarat Technological UniversitySummer 2026 examination
GTU BE04005011 Mechanical Operation Summer 2026 Question Paper & PDF
B.E. · Chemical Engineering · Semester 4 · Subject code BE04005011
- 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)
Define:
1)Rittinger’s Law
2)Kick’s Law
3)Bond’s Crushing Law
(b)
Calculate the sphericity of cylindrical particle of 2 cm diameter and 5 cm height.
(c)
Explain screen effectiveness and derive its mathematical expression.
OR
(c)
Explain differential and cumulative method of particle size analysis. Which analysis is more preferable differential or cumulative? How?
Q.3
14 Marks(a)
Define minimum fluidization velocity and explain its significance.
(b)
Write merits and demerits of fluidization process.
(c)
Explain pneumatic conveying system with neat diagram, advantages and disadvantages.
OR
(a)
Differentiate clarifier and classifier.
(b)
What are the important considerations for selection of conveyor?
(c)
Derive Kozeny–Carman equation for laminar flow through packed bed.
Q.4
14 Marks(a)
What is meant by cake resistance and filter medium resistance?
(b)
Explain different zones formed during batch sedimentation.
(c)
A sludge is filtered in a washing plate and frame filter press at a constant pressure of 3 kg/cm2. A 15 cm cake is formed in 1 hour with filtrate volume of 6 m3 at the end of filtration 1.5 m3 of washing liquor is passed. All other operation takes approximately 10 minutes. Neglect resistance of cloth and flow lines. Determine:
i)The washing
time,
ii)Amount of filtrate produced in 24 hours
OR
(a)
Explain about Filter aid and Filter Media.
(b)
Derive mathematical expression for constant rate filtration.
(c)
Discuss principle, construction and working of basket centrifuge.
Q.5
14 Marks(a)
What is the Power number? Define its significance.
(b)
Explain characteristics, applications and selection criteria of paddles.
(c)
Classify impellers used in agitation of liquids and explain each briefly.
OR
(a)
Define mixing index and explain its role in determining uniformity of mixture.
(b)
Discuss different types of mixers used for solids.
(c)
Discuss different techniques used to avoid vortex formation during agitation.
Other Semester 4 subjects
BE Chemical
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About this paper
Official Gujarat Technological University (GTU) examination paper for Mechanical Operation (Summer 2026, B.E. · Chemical Engineering, Sem 4). 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.