Chemical Engineering
GATE CH Plant Design and Economics PYQs
Build your understanding with focused practice from past exam papers.
Questions 21–27 of 27. Imported answers require independent review unless marked reviewed.
Question 55
Open questionCHNAT2 marksNeeds review
A taxi-car is bought for Rs 10 lakhs. Its salvage value is zero. The expected yearly income after paying all expenses and applicable taxes is Rs 3 lakhs. The compound interest rate is 9% per annum. The discounted payback period (in years) is __________ (rounded off to the next higher integer).
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 13
Open questionCHMCQ1 markNeeds review
The Annual Fixed Charges (AFC) and Annual Utilities Costs (AUC) of a distillation column being designed are expressed in terms of the reflux ratio (R) as
The reflux ratio (
) for optimizing the total cost of the distillation column may be found by solvingYour answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 27
Open questionCHMCQ2 marksNeeds review
In the year 2005, the cost of a shell and tube heat exchanger with 68 m² heat transfer area was Rs. 12.6 Lakh. Chemical Engineering Index for cost in 2005 was 509.4 and now the index is 575.4. Based on index of 0.6 for capacity scaling, the present cost (in Lakhs of rupees) of a similar heat exchanger having 100 m² heat transfer area is estimated to be
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 28
Open questionCHMCQ2 marksNeeds review
A furnace installed at a cost of Rs. 24 Lakh is expected to serve its useful life of 5 years. Salvage value of the furnace is Rs. 8 Lakh. The interest rate compounded annually is 8%. The estimated capitalized cost (in Lakhs of rupees) is
Your answerChoose one option.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 22
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The cost of a new pump (including installation) is 24,000 Rupees. The pump has a useful life of 10 years. Its salvage value is 400 Rupees. Assuming straight line depreciation, the book value of the pump at the end of 4th year, rounded to the nearest integer, is ______ Rupees.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 53
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A bond has a maturity value of 20,000 Rupees at the end of 4 years. The interest is compounded at the rate of 5% per year.
The initial investment to be made, rounded to the nearest integer, is __________ Rupees.
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You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 54
Open questionCHNAT2 marksNeeds review
The total cost (
) of an equipment in terms of the operating variables
and
is
The optimal value of
, rounded to 1 decimal place, is _____________.Log in to check the answer
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