Jawaharlal Nehru Technological University Hyderabad 2010-2nd Sem M.Tech CAD / CAM Regular s tember, DESIGN OF HYDRAULICS & PNEUMATIC SYSTEMS (Common to CAD/CAM, Design for Manufacturing)

Code No: B0405/D0401
JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD
M.Tech II- Semester Regular exams September, 2010
DESIGN OF HYDRAULICS & PNEUMATIC SYSTEMS
(Common to CAD/CAM, Design for Manufacturing)
Time: 3hours Max. Marks: 60
ans any 5 ques.
All ques. carry equal marks
- - -

1.a) elaborate the essential components of hydraulic circuit and discuss about the
selection of reservoir?
b) Differentiate ranging from radial piston pump & axial piston pump and mention their
advantages and applications.

2.a) Bring out the advantages and application of two-position and four-position
direction control valves.
b) What is the function of relief valve in a circuit and discuss its working with a neat
sketch?

3.a) Sketch and discuss the construction and working of pressure compensated flow
control valve.
b) discuss with a neat sketch the assembly of the joints of piston rod & bush, piston
rod and eye bore and piston rod and bore interface.

4.a) Sketch and discuss the working of vane motor and mention its advantages over
swash plate motor.
b) Differentiate ranging from gas charged accumulator and spring loaded accumulator.

5.a) Differentiate ranging from static and dynamic seals. discuss the effect of seal material
on the friction.
b) Draw a hydraulic circuit diagram of a hydraulic system having a double acting
cylinder which has rapid approach speed, then slow speed at the end of stroke and
return speed rapidly.

6.a) Sketch the application of cup seals shaft seals and face seals used in practice.
b) elaborate the different pneumatic cylinders used in practice and discuss with a neat
sketch the constructions and working of double end cylinder.

7.a) elaborate the common faults obtained in hydraulic system and discuss the repairs of
reservoir and how the oil contamination is checked?
b) How the filter life is decided and discuss the filter maintenance?

8. ans the following:
a) Hydro-pneumatics
b) Servo-controls
c) Micro-processors.

Earning:   Approval pending.