Download JNTUA (JNTU Anantapur) M.Tech ( Master of Technology) 1st Semester 2019 Feb Regular and Supply 17D04105 Design of Hydraulic And Pneumatic Systems Previous Question Paper
M.Tech I Semester Regular & Supplementary Examinations January/February 2019
DESIGN OF HYDRULIC & PNEUMATIC SYSTEMS
(Common to MD & CAD/CAM)
(For students admitted in 2017 & 2018 only)
Time: 3 hours Max. Marks: 60
Answer all the questions
*****
1 (a) What is a semi-rotary actuator? Explain any one with neat sketch.
(b) Explain open loop and closed loop circuit.
OR
2 Explain detail about selection, specification and characteristics of hydraulic pump.
3 (a) With a sketch, explain the working of a 4/3 closed centre DCV.
(b) Sketch a fixed flow pressure compensated flow control valve and explain its working.
OR
4 Explain the function and working principle of pressure reducing valve and sequence valves.
5 Draw a neat sketch and explain the function of following:
(a) Synchronizing with flow control valves.
(b) Synchronizing with matching pumps.
OR
6 Construct a hydraulic circuit for earth mover and explain its working principle.
7 Develop a circuit for the sequence A1B1B0A0 using step counter method for single cycle
operation and explain the working.
OR
8 Consider an automatic drilling machine. 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.
9 (a) Write a note on application of hydraulic/pneumatic systems for robotic control.
(b) State the common faults in a hydraulic system.
OR
10 (a) With a block diagram, explain the functions of PLC.
(b) Sketch a PLC based circuit for the extension and retraction of a cylinder and explain.
*****
FirstRanker.com - FirstRanker's Choice
This post was last modified on 30 July 2020