Gujarat Technological UniversitySummer 2025 examination

GTU 3150506 Chemical Process Plant Design & Economics Summer 2025 Question Paper & PDF

B.E. · Chemical Engineering · Semester 5 · Subject code 3150506
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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
Write in brief on continuous process v/s batch process
(b)
4 marks

It is desired to borrow ₹1000 to meet a financial obligation. Thos money can be borrowed from a bank at a monthly rate of 2 per cent

i)Calculate the total amount of principal plus compound interest due after 2 years if no intermediate payment is made.
ii)The nominal interest rate if the interest is compounded annually.
iii)The effective interest rate. if the interest is compounded annually.
(c)
7 marks

The original value of a reactor is ₹ 4,00,00,000 completely installed and ready for use. Determine the asset value of the equipment at the end of 5 years using straight line and declining balance method.

Q.2

14 Marks
(a)
3 marks
Explain six-tenths factor rule
(b)
4 marks

What are the various stages of process development of a chemical plant?

(c)
7 marks
Explain cash flow for industrial operation by drawing tree diagram
(c)
7 marks
List and discuss principles of plant layout.

Q.3

14 Marks
(a)
3 marks
Write a short note on pipe fittings.
(b)
4 marks
Sketch an ideal plant layout. (Provide legend if required)
(c)
7 marks

A heat exchanger of area 25m² had a cost of ₹50,00,000 in 2020. What is the estimated cost of 50m² heat exchanger in 2023? Assume that cost index in 2020 was 600 and in 2023 is 800. Equipment cost vs. capacity factor is 0.58.

(a)
3 marks
Write in brief the importance of utilities in chemical industries.
(b)
4 marks
Explain importance of pilot plant and scale up in chemical industry.
(c)
7 marks

Outline the list of preliminary specifications needed to be specified for equipment in specification sheet

Q.4

14 Marks
(a)
3 marks
Write in brief on types of flow diagrams.
(b)
4 marks
State methods of estimating capital Investment. Discuss any one in detail.
(c)
7 marks

Enlist various methods of Profitability analysis. Explain any two methods in detail.

(a)
3 marks

A bond has a maturity value of ₹1000 after 5 years of interest rate of 12%. What is the value of the bond?

(b)
4 marks
Distinguish between standard and special equipment.
(c)
7 marks

Two pumps under consideration for installation at a plant have the following capital investments, salvage values and annual interest. Capital investment ₹ Salvage value ₹ Interest rate per annum (%) Pump A 40,000 3900 10 Pump B 50,000 20000 10 If annual cost of capital recovery is same for both the pumps. Then determine what should be the common life of the pumps. Maintenance and operational costs are negligible.

Q.5

14 Marks
(a)
3 marks
Explain Plant overhead cost
(b)
4 marks

A distillation column has been installed at the cost of ₹10, 00,000 and is expected to have service life of 15 years with scrap value of ₹30,000. Calculate the capitalized cost of the distillation column based on annual interest rate of 5%.

(c)
7 marks

The effect of variable x,y on total cost of particular operation 𝐶𝑇 = 2.33𝑥 + 11900 𝑥𝑦 + 1.86𝑦 + 100. Determine value of x and y which will give the total least cost

(a)
3 marks
Write a brief note on PERT techniques used for Inventory control
(b)
4 marks

The annual production of a plant is ₹36.4 lakhs, while the sum of the fixed charges and general expenses are ₹26 lakhs. What is the breakeven point in unit of production per year., If total annual sales is ₹72.8 lakhs and product sales at ₹520 per unit

(c)
7 marks

An R & D Project has certain activities to execute. First three of these activities include design (21), building prototype

5)and evaluating equipment
7). The first activity does not have any predecessor, but it is the predecessor of 2nd and 3rd activity. 4th activity is testing of prototype
2), in which building of prototype is the predecessor. Writing equipment report
5), method report
8), and final report
2)are considered as 5th, 6th and 7th activities. 3rd and 4th activities are the predecessor of 5th and 6th activity. 5th and 6th activities are the predecessors of 7th activity. Construct the network diagram and indicate the critical path. The numbers in the brackets indicate the time (in weeks) required for that particular activity.

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About this paper

Official Gujarat Technological University (GTU) examination paper for Chemical Process Plant Design & Economics (Summer 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.

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