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Enrolment No.
Subject Code: 2133404
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER-III (NEW) EXAMINATION — SUMMER 2019
Subject Name: Basic Manufacturing Processes
Time: 02:30 PM TO 05:00 PM
Instructions:
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1. Attempt all questions.2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) Explain principle of Lathe and name some operations which can be carried out on a lathe. [04]
(b) Write a short note on Production process. [07]
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(c) What is the purpose of chuck? List out various types of chucks used in the lathe? Explain any two with neat sketches. [03]Q.2 (a) What is the use of ratchet & pawl mechanism? [04]
(b) State and explain the working principle of a planer. [07]
(c) Draw a neat diagram of a shaping machine and explain its important parts. [07]
OR
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(c) Differentiate between Shaper, Planer and Slotter. [07]
Q.3 (a) Define ‘cutting speed’ in a drilling machine. [03]
(b) Write short notes on following: a) Counter boring, b) Tapping [04]
(c) Write a torque Calculation for Speed, Feed and Depth of cut for drilling machine. [07]
OR
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(a) Name any four work holding devices used in a drilling machine. [03]
(b) What is boring? Sketch a boring tool. [04]
(c) Draw and explain a bench drilling machine. [07]
Q.4 (a) Name four work holding devices in a milling machine. [03]
(b) What are the different milling machine operations? [04]
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(c) What is indexing? Describe direct indexing, with examples. [07]OR
(a) Define the following terms used in milling operations. [03]
a) Cutting speed
b) Feed
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c) Machining time [04](b) What are the differences between a plain milling machine and a universal milling machine? [07]
(c) Explain in details Gear cutting using a milling machine with the Procedure neat sketch. [07]
Q.5 (a) What is meant by a ‘universal’ grinder? How does it differ from a plain grinder? [03]
(b) List any four operations performed by a grinding machine and explain any one in details. [04]
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(c) What is an Abrasive? How are abrasive Classified? Enlist and explain various abrasives used in grinding wheels. [07]Date: 11/06/2019
Total Marks: 70
OR
Q.5 (a) What are the reasons for chattering? [03]
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(b) Write down the application and purpose of Grinding. [04](c) Explain a surface grinder with a diagram. [07]
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