GTU B.Pharm 2020 Summer Question Papers || Gujarat Technological University
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- V EXAMINATION - SUMMER 2020
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Subject Code: 2150502
Subject Name: MECHANICAL OPERATION
Time: 02:30 PM TO 05:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.1 (a) | Define: screen effectiveness | 03 |
| (b) | Differentiate between: Grizzlies and Trommels | 04 |
| (c) | Apply importance of mechanical operation in chemical industries | 07 |
| Q.2 (a) | Describe in short: Roll crusher with neat sketch | 03 |
| (b) | Discuss laws of size reduction interpret it with the importance of the work index | 04 |
| (c) | Calculate power required to crush 150 tonnes per hour of 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 Calculate the critical speed of the ball mill by using following data: diameter of ball mill <450 mm, diameter of ball =25 mm | 07 |
| Q.3 (a) | Define: belt conveyors | 03 |
| (b) | Determine conditions for fluidization | 04 |
| (c) | Explain the fluidization regimes with neat sketch --- Content provided by FirstRanker.com --- ORDefine: screw conveyors | 07 |
| Q.4 (a) | Determine minimum fluidization velocity | 03 |
| (b) | Explain fluidization and its application in chemical industries | 04 |
| (c) | Define: electrostatic separation | 07 |
| Q.5 (a) | Discuss batch sedimentation by illustrating it with laboratory experiment | 03 |
| (b) | Label with diagram construction and working of rotary drum filter OR Define: magnetic separation | 04 |
| (c) | Discuss cyclone separator by illustrating it with laboratory experiment | 07 |
| Q.5 (a) | Label with diagram construction and working of plate and frame filter press | 03 |
| (b) | Show typical agitated vessel with figure | 04 |
| (c) | Write use of static mixers in industries | 07 |
| Q.5 (a) | Where do industries store the solids name different equipment used for storage | 03 |
| (b) | Use preventive measure for swirling and vortex formation | 04 |
| (c) | Show different types of flow pattern induced in an agitated vessel (liquid) | 07 |
Date: 28/10/2020
Total Marks: 70
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