
	Trending ▼ ICSE CBSE 10th ISC CBSE 12th CTET GATE UGC NET Vestibulares ResFinder

Course Industrial Fluid Power (October 2010)

4 pages, 29 questions, 0 questions with responses, 0 total responses,

	pune_eng	+Fave Message
	Profile Timeline Uploads Q & A

Home > pune_eng >

Instantly get Model Answers to questions on this ResPaper. Try now!
NEW ResPaper Exclusive!

Formatting page ...

Total No. of Questions : 12] [Total No. of Pages : 4 [3864] - 143 B.E. (Mechanical) INDUSTRIAL FLUID POWER (2003 Course) ( 402049 ) P1040 Time : 3 Hours] [Max. Marks : 100 Instructions to the candidates: 1) 2) 3) 4) 5) 6) Answer three questions from each section. Answers to the two sections should be written in separate books. Neat diagrams must be drawn wherever necessary. Figures to the right indicate full marks. Use of electronic pocket calculator is allowed. Assume suitable data, if necessary. SECTION - I Q1) a) b) c) Discuss any six important properties of hydraulic fluid. What are the different seals used in hydraulic system. Explain the bypass filter with its merits and demerits. [6] [8] [4] Q2) a) b) c) OR Explain the difference between flared fitting and a compression fitting.[6] Explain the sources of contamination in hydraulic system. [8] Write a note on schedule number of standard pipe. [4] Q3) a) Explain with a neat sketch the working of Radial piston pump with its characteristics. [10] b) What are the different accessories used in hydraulic systems? What are [6] their functions? OR Explain the different type of accumulators used in hydraulic circuit. [8] Q4) a) b) What are the functions of reservoirs? Draw a neat sketch of standard reservoir by showing its internal and external features. [8] Q5) a) b) State the advantages and disadvantages of meter -in circuit. [6] Explain with neat sketch working of a counter balance valve and draw a circuit showing its application. [10] P.T.O. Q6) a) b) c) OR Classify direction control valves. [4] Draw a neat sketch and explain the working of a sequence value. [8] Differentiate open centre and close centre valve position in direction control valves. [4] SECTION - II Q7) a) b) Classify different hydraulic actuators. [6] A double acting cylinder is to be operated continuously to and fro. Draw a hydraulic circuit without solenoid valves and explain the operation.[10] OR Q8) a) Explain the following terms with respect to hydraulic motor. i) Volumetric efficiency ii) Mechanical efficiency iii) Overall efficiency. b) Q9) a) b) Draw a regenerative circuit explaining its applications. [6] [10] A pneumatic cylinder is needed to press fit a pin in a hole. Design a circuit diagram with a pre condition that while actuating, both the hands of the operator should be engaged. [8] Explain the purpose of quick exhaust valve in pneumatic system with a [8] circuit. OR Q10) a) Explain working of a filter, regulator and lubricator (FRL) unit used in pneumatics with the help of a sketch. [8] b) Draw typical circuits of different speed regulating methods used in pneumatic circuits. [8] Q11) A press requires a flow rate of 200 litres/min for high - speed opening and closing of the dies at a maximum pressure of 30 bars. The work stroke needs a maximum pressure of 400 bars, but a flow rate between 12 and 20 litres/min will be acceptable. The circuit uses a dual pump and an unloading valve. Draw the circuit. Calculate the discharges reguired for high pressure, low- volume pump and high - volume, low pressure pump. Also calculate the power required and power saved instead of an equivalent single pump. [18] [3864] - 143 -2- OR Q12)A machine slide is moved by a cylinder. The motion required is as follows: a) Initially the cylinder moves against a load of 2.5 kN till it reaches the workpiece at a speed of about 1.5 m/min. b) The speed drops down to about 0.5 m/min as soon as the load increases to 12.5 kN. c) The return motion is against a load of 2.5 kN. A meter out circuit is used. Draw a circuit which will fulfill these requirements. Select different components you have used in the circuit from the given data. Mention ratings of the components in case it is not available in the given data.[18] [3864] -143 -3- ***** [3864] - 143 -4-

Formatting page ...

Additional Info : 2003 Course
Tags : Pune, Engineering, University of Pune, Engineering question papers, Pune University, previous year question papers, question papers, india, model question paper, pune university paper pattern, pune university syllabus, old question papers

pune_eng chat

Horizontal lines at:
Guest Horizontal lines at:
AutoRM Data:
Box geometries: