Anna
University, Chennai Nov/Dec 2012- Important Questions
ME2305 APPLIED HYDRAULICS AND PNEUMATICS
V Sem
MECH
Unit
I-V
1. Explain the hydraulic and
pneumatic fluid power system
2. Differentiate between laminar and
turbulent flow.
3. How to calculate the frictional
losses in the valves and fittings.
4. Differentiate between laminar and
turbulent flow.
5. Explain the various mechanisms of hydraulic mounting.
6. Explain the working principle of
external gear pump
7. A pump has a
displacement of 80 cm3. It delivers t.25 Lps at 1200 rpm and 75 bar. If the
prime mover input torque is 110 N-m,
(1) Find the overall efficiency of the pump.
(2) What is the theoretical torque required to
operate the pump?
8. Draw and
Explain the working of a direct acting pressure reducing valve with neat
diagram
9. With a neat
sketch, explain the construction and operation of a pilot operated sequence
valve.
10. What is
fail-safe circuit? With suitable diagram, explain two handed safety circuit.
11 Explain the
operational feature of check valve.
12. Explain the
piston type compressor.
13. Discuss the
construction and working principle of a Rotary vane air compression
14. Explain the
synchronizing circuit.
15. Develop and
electro pneumatic circuit by cascade method for the following sequence : A+ B+
B- A-, Where A and B stands for cylinders, (+) indicates extension and (-)
indicates retraction of cvlinders.
16. Explain the
hydro mechanical system
17 Explain the
PLC with application.
18 Enlist the
various faults, probable causes and also the remedial actions for the following
pneurnatic system components.
(i) Compressor
(iii) Air cylinder
(ii) FRL unit
(iv) Pipelines.
