Download GTU BE/B.Tech 2018 Winter 3rd Sem New 2132501 Machining Processes Question Paper

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Seat No.: Enrolment No.

GUJARAT TECHNOLOGICAL UNIVERSITY

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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

1. (a) Differentiate between machine and machine tool. [03]

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2. (b) Give the function of bed, head stock, tail stock and tool post in lathe machine. [04]
3. (c) Enlist thread cutting and drilling operation on drilling machine with neat sketch. [07]

Q.2

1. (a) Explain the working motion in shaper and grinding machine. [03]
2. (b) Enlist the accessories of lathe machine and give the function of Lathe Centers, rests. [04]

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3. (c) Differentiate between capstan and turret lathe. [07]

OR

1. (c) A taper pin of length 90 mm has a taper of 62 mm. The larger diameter is 95 mm and the smaller diameter is 85 mm. Determine (i) taper in mm/meter and in degree (ii) the angle to which the compound rest should be set-up (iii) the tail stock setting over. [07]

Q.3

1. (a) Define cutting speed, feed and depth of cut. [03]

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2. (b) Explain the half nut mechanism in lathe machine. [04]
3. (c) Enlist the taper turning operation on lathe machine and describe any two method of taper turning. [07]

OR

1. (a) Explain the deep hole drilling machine. [03]
2. (b) Enlist the various alignment tests which are conducted on lathe machine and explain any two. [04]

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3. (c) Enlist the various cutting operations carried out on drilling machine and explain any four with neat sketch. [07]

Q.4

1. (a) Classify milling machine. [03]
2. (b) Explain the types of milling processes. [04]
3. (c) Explain radial drilling with neat sketch. [07]

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OR

1. (a) Give the function of principal parts of standard planer. [03]
2. (b) Explain quick return mechanism with neat sketch. [04]
3. (c) Enlist the milling operation and explain it. [07]

Q.5

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1. (a) Explain the working principle of broaching machine. [03]
2. (b) Describe various advantage and limitations of broaching machine. [04]
3. (c) Differentiate between shaper and planner machine. [07]

OR

1. (a) State classification of grinding machine. [03]

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2. (b) Explain truing and dressing of grinding wheel with neat sketch. [04]
3. (c) Explain any three alignment tests which are conducted on grinding machine. [07]