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2003 Course Assembly & Maintenance of Printing Machines

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Total No. of Questions : 06] [Total No. of Pages : 03 P1521 [3764] - 309 B.E. (Printing) ASSEMBLY & MAINTENANCE OF PRINTING MACHINES (2003 Course) (408289) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) All questions are compulsory. Answer any one of each question a or b. 2) Questions 1, 2, 4 and 5 have 16 marks and Questions 3 and 6 have 18 marks. 3) Illustrations / drawings should be made to illustrate. SECTION - I Q1) a) Where are lead screws used in printing machines. iii) Where are bevel gears used in printing machines and why? iv) What is the function of an air cylinder. What other mechanical component does it replace. i) In a printing machine speed control systems are used. Explain the reason for the same. ii) What are the types of bearing used in printing machines. Explain the advantage of rolling bearings over sliding bearings. iii) What are the various types of couplings used in printing industry? iv) Q2) a) What are the different types of cams used in printing machines. ii) b) i) Where are pneumatic systems used in Printing industry? i) What are the various mechanical groups of a printing machine? ii) 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) What are chain drives commonly replaced with in modern times? Advantage thereof. P.T.O.

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