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Previous Year Exam Questions for Basic Manufacturing process - BMP of 2019 - GTU by kusum chaudhary

  • Basic Manufacturing process - BMP
  • 2019
  • PYQ
  • Gujarat Technological University - GTU
  • Mechanical Engineering
  • B.Tech
  • 3 Views
  • Uploaded 4 months ago
Kusum Chaudhary
Kusum Chaudhary
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Seat No.: ________ Enrolment No.___________ GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–III • EXAMINATION – WINTER • 2014 Subject Code: 2131903 Subject Name: Manufacturing Processes - I Time: 02.30 pm - 05.00 pm Date: 18-12-2014 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) (b) Q.2 (a) (b) (b) Q.3 (a) (b) Q.3 (a) (b) Q.4 (a) (b) Give the Classification of Machining Processes and Also discuss the major factors influence the selection of a suitable machining process. Explain size of Lathe. Also describe various types of Lathes along with their applications and general specifications. 07 Describe Turning operation in Lathe Machine. Also discuss Shoulder Turning and Eccentric Turning with neat sketch. What is Tool Signature and Tool Geometry ? Explain importance of tool angles for single point cutting tool in brief. OR Write a short note on “Turret Lathe”. 07 Enlist various operations carried out on drilling machine. Also explain Tapping, Trepanning and Countersinking. Discuss briefly, with a neat sketch, horizontal boring machine. OR Explain Radial drilling machine with neat sketch. Give the comparison between boring and reaming. Also describe Precision boring machine with neat sketch. 07 What is Indexing? Enlist and Discuss various types of Indexing. Explain Hydraulic shaper mechanism in details and also discuss the quick return motion of Hydraulic shaper. 07 07 07 07 07 07 07 07 OR Q.4 (a) (b) Q.5 (a) (b) Q.5 (a) (b) Enlist various Milling Operations. Discuss the following operations. 1. Straddle Milling 2. Gear Milling 3. Face Milling Give the differences among shaper, planner and slotter. Discuss Briefly the planner driving mechanism. 07 What are the advantages, limitations and applications of broaching ? Explain “Pull broaching” and “Push Broaching”. What is an Abrasive? How are abrasive Classified? Enlist and explain various abrasives used in grinding wheels. OR Write a short note on: “Band Sawing Machine” With neat sketch explain Center less Grinding Machine. 07 07 07 07 07 ************* 1

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Seat No.: ________ Enrolment No.___________ GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER– III EXAMINATION – SUMMER 2015 Subject Code: 2131903 Date:29/05/2015 Subject Name: MANUFACTURING PROCESSES-I Time: 02.30pm-05.00pm 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) (b) Q.2 (a) (b) (b) Q.3 (a) (b) Q.3 (a) (b) Q.4 (a) (b) List the surface finishing processes. Why can close dimensional tolerances be not guaranteed with surface finishing operations? State the purpose of each part on lathe: (1) Face Plate, (2) Lead screw,(3)Steady rest, (4) Chasing dial, (5) Mandrel, (6) Split nut and (7) Tail stock. 07 With help of neat diagram explain the following setup on centre lathe: (1) Use of fixed steady for drilling on end of a long bar. (2) A knurling operation set up. (3) Taper turning by swiveling compound rest. List the work holding devices used for holding work on a drilling machine and explain with neat sketch any three. OR Determine the time required to drill a hole of 25mm diameter in a cast iron work piece 50mm thick using a high speed steel drill. The cutting speed and feed rate for the operation may be assumed to be 0.50 m/s and 0.5 mm/rev respectively. The drill point angle is 118˚m. An approach and over travel may be assumed to be 8mm. 07 With help of neat sketch explain vertical boring machine and state function of its parts. List different type of reamers commonly used on drilling machine and describes with neat sketch any three. OR What do you understand by (1) Gang milling (2) Straddle milling (3) String milling? Explain method of mounting and application of the following cutters used on milling machine: (1) End mills, (2) Slitting saws and (3) Slab milling cutter. 07 Explain with neat sketch shaper feed mechanism. Draw a neat sketch of slotter and explain function of principle parts of slotter. 07 07 07 07 07 07 07 07 OR Q.4 (a) (b) Q.5 (a) Calculate machining time for steel slab top surface 400mm wide and 500mm long to be planed on a planer. The cutting speed and return speed are 20 m/min and 80 m/min respectively. Take machining allowance as 10mm , side over travel of tool as 3mm,table over travel on both side as 100mm and tool approach angle as 45˚.The cross feed of tool is 3mm/full stroke. Explain basic principle of broaching. Make neat sketch of internal pull type broach showing various terms related to its teeth and explain significance of these terms. 07 What is meant by setting the saw teeth? Describe various types of teeth sets and give their application. 07 07 1

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(b) Q.5 (a) (b) Discuss with neat sketch how are the following alignment test conducted on lath :( 1) Spindle Centre run out (2) Pitch accuracy of lead screw. OR List the various types of bond used in manufacture of grinding wheels. State the type of application in which each bond is useful. Explain how you will check the following on milling machine: (1)Central T-slot square with arbor (2) Work table parallel with arbor rising towards over arm. 07 07 07 ************* 2

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Seat No.: ________ Enrolment No.___________ GUJARAT TECHNOLOGICAL UNIVERSITY BE - SEMESTER–III (New) EXAMINATION – WINTER 2015 Subject Code:2131903 Subject Name: Manufacturing Processes - I Time: 02:30pm to 05:00pm Date:21/12/2015 Total Marks: 70 Instructions: 1. Attempt all questions. 2. Make suitable assumptions wherever necessary. 3. Figures to the right indicate full marks. MARKS Q.1 Q.2 Q.3 Q.3 Q.4 1 2 3 Short Questions Define feed in the turning operation What is provided in place of tailstock in Capstan lathe? Why is quick return mechanism used in shaping machine? 4 5 6 7 8 9 10 11 Give names of any two types of milling cutters. What is the function of steady rest? What is dead centre? For which operation is the lead screw used? What is the function of reamer? What is a face plate? What is function of a Mandrel? Explain why broaching cannot be used to machine a blind hole. 12 13 In planner, does tool reciprocate or work piece reciprocates? In tool signature 8-14-6-6-20-15-4. 8-14-6-6-20-15-4, what is nose radius value? 14 What is the material of bed in conventional machine tool? (a) Give classification of grinding machine. (b) Define a Basic Machine Tool and state the general requirements of machine tools? (c) Draw neat sketch of column & knee type milling machine. Label the main parts. State functions of each part. OR (c) With neat sketch explain how stroke length can be set on a shaper having crank and slotted link mechanism? (a) Can slotter be called as vertical shaper? Justify your answer. (b) Describe working of circular sawing machine with neat sketch. (c) List the methods of taper turning on lathe machine. Explain with neat sketch the taper turning method that can be used for taper turning long length job. OR (a) Explain how grinding wheels are classified. (b) Explain working of surface grinding machines. (c) Explain the thread cutting operation on lathe machine. (a) Derive the formula to estimate the machine time calculation for turning operation 14 03 04 07 07 03 04 07 03 04 07 03 1

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