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2003 Course Industrial Hydraulics & Pneumatics

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Total No. of Questions : 12] P1514 [Total No. of Pages : 4 [3764]-152 B.E. (Mechanical Engineering) (Sandwich) INDUSTRIAL HYDRAULICS AND PNEUMATICS (2003 Course) (402062) Time : 3 Hours] [Max. Marks : 100 Instructions to candidates : 1) Answer any three questions from each section. 2) Answer 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 electronic pocket calculator is allowed. 6) Assume suitable data if necessary. SECTION - I Q1) a) b) c) Q2) a) b) c) Q3) a) b) c) Q4) a) b) c) List and explain in short eight applications of Hydraulics and Pneumatics. [8] What is the difference between static and dynamic seal? [4] Name and explain four types of materials used for seals. [4] OR What are the three most common reservoir designs? [6] What are the ways in which hydraulic fluid becomes contaminated? [6] Explain basic types of filtering methods. [4] What are the basic types of accumulator and explain the three significant accumulator-operating conditions? [6] A pump has overall efficiency of 0.87 and a flow rate of 45 lpm is to be used in a system that has a maximum operating pressure of 25,000 kPa. What input power required? [5] Explain Cavitation and Aeration phenomenon of Pumps. [5] OR Name the important consideration when selecting a pump for a particular fluid power application. [4] How can displacement be varied in an axial piston pump? [6] Explain Performance characteristics of positive displacement pumps and compare it with Performance characteristics of Centrifugal pump. [6] P.T.O.

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