Download GTU BE/B.Tech 2019 Summer 4th Sem New 2143608 Mechanical Operations In Chemical Process Industries Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
SEMESTER-IV(NEW) — EXAMINATION - SUMMER 2019

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Subject Code:2143608 Date:15/05/2019
Subject Name: Mechanical Operations in Chemical Process Industries
Time:02:30 PM TO 05:00 PM Total Marks: 70

Instructions:

1. Attempt all questions.

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2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full mark.

MARKS

Q.1 (a) Define :1) Angle of nip 2) Centrifuging 3) Sieve number 03
(b) Derive the equation for screen efficiency. 04

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(c) Define agitation and mixing. Write various preventive actions to be taken for avoiding vortex generation in vessel. 07

Q.2 (a) What do you mean by comminution? Explain with its principle. 03
(b) Define screen effectiveness and derive the equation for the same. 04
(c) Explain with the neat sketch construction and working of the jaw crusher. 07

OR

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(c) Write short note on roll crusher. 07

Q.3 (a) Enlist different types of impeller for agitation. 03
(b) Explain comparison of open circuit operation and close circuit operation. 04
(c) Explain different laws of size reduction with its equation. 07

OR

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Q.3 (a) Differentiate ideal screen and actual screen. 03
(b) Write a short note on clarifiers with a neat diagram. 04
(c) Write a short note on fluid energy mill with neat figure. 07

Q.4 (a) Define angle of nip and write down its general value. 03
(b) What is the difference between constant pressure and constant rate filtration. 04

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(c) Define sedimentation and write a short note on various zones in continuous sedimentation with neat diagram. 07

OR

Q.4 (a) Explain sink and float method. 03
(b) Write down various features of rotary filters. 04
(c) Explain in brief about cyclone separator. 07

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Q.5 (a) Draw the sketch of Ball mill. 03
(b) What are the different parameters affecting screening operation. 04
(c) Write down principles of cake filtration and derive equation for specific cake resistance and filter medium resistance for an incompressible cake. 07

OR

Q.5 (a) Write a short note on grizzles. 03

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(b) What are the different selection criteria for selection of agitator. 04
(c) What is the importance of Mechanical Operations in Chemical process Industry. 07

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