This download link is referred from the post: JNTUA M.Tech 1st Sem last 10 year 2010-2020 Previous Question Papers (JNTU Anantapur)
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Code: 17D04105
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M.Tech I Semester Regular & Supplementary Examinations January/February 2019
DESIGN OF HYDRAULIC & PNEUMATIC SYSTEMS
(Common to MD & CAD/CAM)
(For students admitted in 2017 & 2018 only)
Time: 3 hours
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Max. Marks: 60
Answer all the questions
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- What is a semi-rotary actuator? Explain any one with neat sketch.
- Explain open loop and closed loop circuit.
OR
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Explain detail about selection, specification and characteristics of hydraulic pump.
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- With a sketch, explain the working of a 4/3 closed centre DCV.
- Sketch a fixed flow pressure compensated flow control valve and explain its working.
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OR
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Explain the function and working principle of pressure reducing valve and sequence valves.
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Draw a neat sketch and explain the function of following:
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- Synchronizing with flow control valves.
- Synchronizing with matching pumps.
OR
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Construct a hydraulic circuit for earth mover and explain its working principle.
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Develop a circuit for the sequence A1B1B0A0 using step counter method for single cycle operation and explain the working.
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Consider an automatic drilling machine.
OR
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The complete cycle is as follows: Cylinder A extends to clamp the work piece, then cylinder B extends to drill a hole and then retracts. Cylinder A then retracts to unclamp the work piece. Design a control circuit applying the K-V mapping method. The circuit is provided with a start valve to avoid continuous cycling.
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- State the common faults in a hydraulic system.
- Write a note on application of hydraulic/pneumatic systems for robotic control.
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OR
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- With a block diagram, explain the functions of PLC.
- Sketch a PLC based circuit for the extension and retraction of a cylinder and explain.
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This download link is referred from the post: JNTUA M.Tech 1st Sem last 10 year 2010-2020 Previous Question Papers (JNTU Anantapur)
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