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2003 Course Offset Machines - II

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Total No. of Questions : 6] P1187 [Total No. of Pages : 2 [3664]-260 B.E. (Printing) OFFSET MACHINES - II (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates : 1) All questions are compulsory. 2) Answers to the two sections should be written in separate books. 3) Neat diagrams must be drawn wherever necessary. 4) Figures to the right indicate full marks. SECTION - I Q1) a) b) With help of neat diagrams explain 'V' and 'W' patterns during preparation of splice. [10] Describe function of roll and roll coverings (web roll). [6] OR a) Draw a neat figure of Dancer Roller and explain function and operation. [10] b) Explain working of metving unit. Q2) a) b) [6] State and explain recent developments in plate changing / loading. [8] Compare metal backed and fabric backed blankets. [8] OR a) Explain anilox offset inking system. [8] b) Explain dampening systems for web offset. [8] Q3) a) b) Explain a Heatset Press. Describe its design, significance & function.[9] Explain chilling mechanism & chill roll design (evolution). [9] OR a) Explain heatset coldset & newsink. [9] b) State different folding techniques, explain any one. [9] P.T.O. SECTION - II Q4) a) b) State any four factors resulting web break. Describe in detail. [8] Draw neat diagrams of all types of web turning device. [8] OR Write short notes on: [16] a) Draw. b) Tension roller. c) Slip. d) Modulus of elasticity of paper. Q5) State any 6 auxilliary equipments used on web offset press. [18] OR a) State and explain maintenance checklist for Former folder. [9] b) State and explain maintenance of chill Rollers. [9] Q6) State any 4 troubles in reel (reel defects). [16] OR State any 4 print troubles due to printing unit (Plate & blanket). Y [3664] - 260 2 [16]

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