Guess Paper 1: Chemical Plant Design Fall – 2020 Past Papers
University Name – Confidential
Time Allowed: 3 hours
Total Marks: 70, Passing Marks (35)
Q.1 Attempt the following MCQs: 7*2=14
1. Two iron pipes of the same nominal diameter but different schedule no; will have the same
a) inside diameter b)None of these c)wall thickness d)outside diameter
2. Tube height in a calendria type evaporator is normally less than __________ meters.
a) 3.5 b) 1 c) 5.5 d) 2
3. ‘Safety factor’ in equipment design is defined as the ratio of the ___________
a) Ultimate stress to breaking stress b) working stress to ultimate stress
c) ultimate stress to working stress d) none of these
4. ______ tray arrangement is recommended for distillation column having diameter upto 4 ft.
a) Radial flow b) Cross flow c) Split flow d) Cascade
5. The operating pressure drop range in a bag filter is about __________ mm water gauge.
a) 50-150 b) 500-1500 c) 5-10 d) 1500-2500
a) Less b) twice c) more d) same
7. Speed of the drum of the rotary vacuum filter normally ranges from __________ rpm.
a) 8-15 b) 5-7 c) 0.1 -2 d) 3-8
Q.2: Explain how the design engineer treats, water pollution by different methods.
What are the necessary factors involved in the designing of shell and tube heat exchanger? 7+7
Q. 3: A plant produces refrigerators at the rate of P units /day. The variable fixed cost per refrigerator has been found tobe 47.73+0.1P1.2 .The total daily fixed charges are 1750 dollars and all other expenses are constant at 7325 dollars/day. If the selling price/refrigerator is 173 dollars. Determine:
(a) The daily profit at a production schedule giving the minimum cost/refrigerator.
(b)The daily profit at a production schedule giving the maximum daily profit. 7+7
Q.4: Enlist the items that should be considered in the feasibility survey report.
Explain the types of design. 6+8
Q.5: Write four advantages and disadvantages of Continuous and Batch operation
Explain the types of a flow diagrams. 4+10
Q.6: Define Depreciation.
Explain shortly, the methods used for calculating depreciation. 4+10
Q.7: Write short notes on any two of the following: 7+7
i. The basic theory of heat transfer
ii. LMTD iii. Break-even Chart
Guess Paper 2: Chemical Plant Design Spring- 2020 Past Papers
University Name – Confidential
Time Allowed: 3 hours
Total Marks: 70, Passing Marks (35)
Question No: 01 Attempt the following MCQs:
i. The stress developed in a material without any permanent set is called the ____________. A: ultimate stress B: yield stress C: elastic limit D: breaking stress.
ii. In a shell and tube heat exchanger, the ‘tube pitch’ is defined as the ______________ .A: O.D. of the tube for square pitch B: the shortest distance between two adjacent tube holes C: shortest center to center distance between adjacent tubes D: none of these.
iii. Needle valves are generally not used for ____________ A: very large diameter pipes B: high-pressure throttling service C: very accurate flow control D: smaller sizes of pipe.
iv. Saddle supports are used for supporting __________ vessels. A: horizontal cylindrical B: tall vertical C: thick-walled vertical D: thick spherical
v. Optimum reflux ratio in a continuous distillation column is determined by the _____________. A: maximum permissible vapor velocity B: flooding limit of the column. C: total cost consideration D: none of these.
vi. An underdesigned steam trap wills _____________. A: waste steam B: destroy itself of acceleration wear due to rapid recycling C: back up condensate and cause water hammer in steam line D: none of these.
vii. __________ Strain is measured using a ‘strain rosetter’. A: Volumetric B: Shear C: Linear D: none of these.
Question No: 02 14
1- Describe stepwise Accumulation and Inventory accounts with examples relating to the designing of valves or Shell and Tube heat exchanger.
Question No: 03
1- Write five differences between batches and continue process. 04
2- Define scale up and explain factors scale up factors in equipment designing. 10
Question No: 04
1- Define and Explain the following cost estimation terms: A: Capital cost B: Cash flow diagram C: Production and raw material cost D: Capital Investment. 2+2+2+2=8
2- Write the key factors involve in Management accounting and Tax Accounting. 3+3= 6
Question No: 05
1- Explain FIFO method of Cost Accounting for designing of Heat exhanger. 10
2- What is the relationship between nominal and effective interest rate. 04
Question No: 06
1- Write Types of the process flow diagrams and their importance in designing. 7
2- Write five factors effecting on the profitability of the investment. 7
Question No: 07 Write short notes on any two of the following: 7+7=14
2. Define the arbitrary method and decline method.
3. Write and explain the type of heat exchanger with a possible diagram.
