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2003 Course Assembly & Maintenance of Printing Machines

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Total No. of Questions : 6] P1189 [Total No. of Pages : 3 [3664]-266 B.E. (Printing) ASSEMBLY AND MAINTENANCE OF PRINTING MACHINES (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) All questions are compulsory. Answer any one of each question a or b. Questions 1, 2, 4 and 5 have 16 marks and Questions 3 and 6 have 18 marks. Appropriate drawings are expected with the answers. Coloured Pencils may be used. For the Layout Graph Paper will be provided (A 3 size). Start answering each question on a new page. SECTION - I Q1) a) i) What are the mechanical drives used in printing machines? ii) Bevel Gears are often found in printing machines. Where and why? iii) What is the function of a toggle lever drive. Where is it used in the printing industry name at least 1 instance. iv) What mechanical parts do air cylinders replace and why? b) i) In printing industry various types of speed control systems are used. List the same. Explain a thyristor variable speed drive? ii) What are the different types of bearing used in printing machines? List. iii) What are various types of coupling used in printing industry? Name at least 3. iv) Where are pneumatic systems used in printing industry? Q2) a) i) ii) What are the various mechanical groups of a printing machine? Undercuts on cylinders. If you do not know the undercut of a machine how would you find out the same? iii) How is the motion on the feeder mechanism on a printing machine changed from vertical to horizontal? iv) Where are quick action clamps used on printing machines? Explain their function. P.T.O.

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