Download GTU BE/B.Tech 2019 Winter 3rd Sem New 3133507 Basics Of Unit Operations Buo Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem New 3133507 Basics Of Unit Operations Buo Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (New) EXAMINATION ? WINTER 2019
Subject Code: 3133507 Date: 28/11/2019

Subject Name: Basics of Unit Operations (BUO)
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.
Mark
Q.1 (a) Define specific surface area, surface mean diameter and volume mean
diameter for particles.
03
(b) Differentiate Jaw crusher and Gyratory crusher. 04
(c) Explain the working and construction of a rotary drum filter with
diagram.
07
Q.2 (a) Define various purposes of agitation. 03
(b) Derive method for calculation of power consumption for agitator 04
(c) What will be the power required to crush 500 tons per hour of limestone
if 80% of the feed passes 150 mm screen and 80% of the product a
2.125 mm screen? Work index of limestone is 12.74.
07
OR
(c) Define agitation and mixing. Enlist different types of flow pattern
induced in an Agitated vessel (liquid).
07
Q.3 (a) Explain the power requirement for a crushing mill by Rittinger?s power
laws with expressions.
03
(b) Explain the working and construction of a ball mill with a neat sketch. 04
(c) Explain about Hydro cyclone 07
OR
Q.3 (a) Discuss about sink and float method. 03
(b) What are the uses of filter aid and filter media? 04
(c) Explain the principle, construction and working of a roll crusher with
a neat sketch.
07
Q.4 (a) Differentiate clarifier and classifier. 03
(b) Discuss pros and cons of filter press. 04
(c) With the help of neat sketch explain different types of impellers for
agitation of liquids along with application.
07
OR
Q.4 (a) What rotational speed in RPM would you recommend for a ball mill of
1200 mm in diameter charged with 75mm balls?
03
(b) Explain about critical speed of ball mill 04
(c) Write short notes on ?Scale up in agitator design? 07
Q.5 (a) Classify comminuting equipment. 03
(b) Discuss different laws used for size reduction. 04
(c) Explain construction, working and applications of cyclone separator
with diagram.
07
OR
Q.5 (a) Write short note on static mixers. 03
(b) Describe various methods for swirling prevention 04
(c) Explain the working and construction of a jaw crusher with sketch 07

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