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2003 Course Manufacturing Automation & Control

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Total No. of Questions : 12] P1322 [Total No. of Pages : 3 [3764]-173 B.E. (Production & Prod. S/W) MANUFACTURING AUTOMATION AND CONTROL (2003 Course) Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) Answer any 3 questions from each section. 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. 5) Use of logarithmic tables, slide rule, Mollier charts, electronic pocket calculator and steam tables is allowed. 6) Assume suitable data, if necessary. SECTION - I Q1) a) A single acting up stroking press having cylinder bore diameter of 350 mm and cycle time of 50 seconds has rapid approach of 200 mm in 8 sec. at 30 bars, pressing operation for 50 mm in 10 sec. at 300 bars and curing in 16 sec. Draw a suitable hydraulic circuit using accumulator and also calculate the size of accumulator and efficiency of circuit. The return is by gravity. [12] b) Explain with neat sketch the gear pump and also derive an expression for its flow. [6] OR Q2) a) Explain the procedure to design the reservoir used in hydraulic circuit. [10] b) Explain with neat sketch the circuit showing the application of deceleration valve. [8] P.T.O.

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