Download GTU BE/B.Tech 2019 Winter 3rd Sem Old 131903 Manufacturing Process I Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 3rd Sem Old 131903 Manufacturing Process I Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? III (Old) EXAMINATION ? WINTER 2019
Subject Code: 131903 Date: 07/12/2019

Subject Name: Manufacturing Process-I
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.

Q.1 (a) How are lathe machine tools classified? Differentiate between standard purpose
and special purpose machine tools?
07


(b) What are the advantages of having a hollow spindle in the headstock of lathe? 07

Q.2 (a) Explain any four commonly used attachments on lathe. 07
(b) Compare Up Milling and Down Milling? Explain Dove-tail milling with neat
sketch.
07
OR
(b) Estimate the time required machining a cast iron surface 250 mm long and 150
mm wide on a shaper with cutting-to return ratio of 3/2. Use a cutting speed of
21 m/min, a feed of 2 mm/stroke and a clearance of 25 mm. The available ram
strokes on the shaper are: 28, 40, 60 and 90 strokes/min. Also, determine MRR
assuming depth of cut as 4 mm
07

Q.3 (a) With a neat sketch show the different parts of a saddle type turret lathe.
Differentiate between capstan and turret lathe?
07
(b) What are the differences between compound indexing and differential
indexing? Explain the relative merits.
07
OR
Q.3 (a) With a neat sketches. Define ?drilling,? ?core drilling,? ?counter drilling,? and
?step drilling.?
07
(b) Explain briefly ?Twist drill nomenclature? with neat sketches. 07

Q.4 (a) With a neat sketch explain feed mechanism of a shaper. 07
(b) Write briefly about broaching machines and its operations with neat sketch? 07
OR
Q.4 (a) Explain briefly a Jig boring machine with a neat sketch. 07
(b) Explain with a neat sketch about a horizontal milling machine. 07

Q.5 (a) Write short note on Alignment test carried on Drilling machine. 07
(b) Describe the working principle of surface grinding. 07
OR
Q.5 (a) How are slotting machine specified and mention few specifications? 07
(b) Write a short on ?Band Sawing Machine,? 07

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