STUPIDSID
1 (a)
What are the advantages, limitations and applications of hydraulic systems?
6 M
1 (b)
With a neat sketch, explain construction and working of unbalanced type gear pump and derive expression for volumetric displacement of the pump.
9 M
1 (c)
Define the terms volumetric displacement, theoretical flow rate, volumetric efficiency and mechanical efficiency.
5 M
2 (a)
Distinguish clearly between 1st class, 2nd class and 3rd class leaver system used in hydraulic system.
9 M
2 (b)
With a neat sketch, explain the working of axial piston motor.
5 M
2 (c)
A hydraulic motor has 82cm2 (0.082L) volumetric displacements. If it has pressure rating of 70 bar and it receives oil from 0.0006m3/sec (0.60LPS) theoretical flow rate pump. Find the motor i) Speed ii) Theoretical torque iii) Theoretical power.
6 M
3 (a)
With a neat sketch, explain the three of centre flow chart configuration for Three positions, Four way valves.
9 M
3 (b)
With a schematic diagram, explain the working of simple pressure relief valve.
5 M
3 (c)
Explain the working of sequence valve with an example.
6 M
4 (a)
Explain with suitable circuit how Automatic cylinder reciprocates with two sequence valves.
10 M
4 (b)
Explain with Hydraulic circuit, how speed control can be achieved in Hydraulic motor.
6 M
4 (c)
Explain spring loaded type accumulator used in Hydraulic system.
4 M
5 (a)
Give three important functions of Baffle plate used in reservoir.
7 M
5 (b)
Define the terms Beta ratio and Beta efficiency of filters.
7 M
5 (c)
Name five things that can cause a noisy pump.
6 M
6 (a)
Explain the characteristics of compressed air.
5 M
6 (b)
Sketch and explain the working of rod-less cylinder.
5 M
6 (c)
Explain briefly the end position cushioning of pneumatic cylinder.
10 M
7 (a)
Write a note on direct and indirect actuation of pneumatic cylinder.
10 M
7 (b)
Explain the logic OR function with shuttle valve and the double acting clinder.
10 M
8 (a)
Explain the Motion control diagram for a 2-cylinder circuit.
8 M
8 (b)
Write a note on relays used in electro-pneumatic control.
6 M
8 (c)
Sketch and explain the non receiving type pressure regulator.
6 M
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