Download GTU B.Tech 2020 Summer 5th Sem 2150502 Mechanical Operation Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Summer 5th Sem 2150502 Mechanical Operation Previous Question Paper

Seat No.: ________
Enrolment No.___________


GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER? V EXAMINATION ? SUMMER 2020
Subject Code: 2150502 Date:28/10/2020
Subject Name: MECHANICAL OPERATION
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.



MARKS
Q.1 (a) Define: screen effectiveness
03

(b) Differentiate between: Grizzlies and Trommels
04

(c) Apply importance of mechanical operation in chemical
07
industries


Q.2 (a) Describe in short: Roll crusher with neat sketch
03

(b) Discuss laws of size reduction interpret it with the
04
importance of the work index

(c) Calculate power required to crush 150 tonnes per hour of
07
limestone if 80% of the feed passes 50 mm screen and
80% of the product a 3.125 mm screen? Work index of
lime stone =12.74.


OR


(c) Calculate the critical speed of the ball mill by using
07
following data: diameter of ball mill=450 mm, diameter of
ball =25 mm
Q.3 (a) Define: belt conveyors
03

(b) Determine conditions for fluidization
04

(c) Explain the fluidization regimes with neat sketch
07


OR

Q.3 (a) Define: screw conveyors
03

(b) Determine minimum fluidization velocity
04

(c) Explain fluidization and its application in chemical
07
industries
Q.4 (a) De
fine: electrostatic separation
03

(b) Discuss batch sedimentation by illustrating it with
04
laboratory experiment

(c) Label with diagram construction and working of rotary
07
drum filter

OR

Q.4 (a) Define: magnetic separation
03

(b) Discuss cyclone separator by illustrating it with laboratory
04
experiment

(c) Label with diagram construction and working of plate and
07
frame filter press
Q.5 (a) Show typical agitated vessel with figure
03

(b) Write use of static mixers in industries
04

P.T.O
1

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(c) Show different types of impellers for agitation of liquid
07



with diagram along with application


OR
Q.5 (a) Where do industries store the solids name different
03
equipment used for storage
(b) Use preventive measure for swirling and vortex formation
04
(c) Show different types of flow pattern induced in an agitated
07
vessel (liquid)

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