STUPIDSID
Solve any one question from Q.1(a,b,c) &Q.2(a,b,c)
1(a)
Compare Characteristics of hydraulic and pneumatic systems with mechanical system.
6 M
1(b)
What is accumulator and explain any one application of it.
6 M
1(c)
The displacement of a pump operating at 1000 RPM at a pressure of 10 bar is 100cm3. The input torque fromthe prime mover is 120 Nm. If it delivers 0.015 m3/s of oil, determine:
i) Overall efficiency of the pump.
ii) Theoretical torque required to operate through pump.
iii) Volumetric efficiency.
i) Overall efficiency of the pump.
ii) Theoretical torque required to operate through pump.
iii) Volumetric efficiency.
8 M
2(a)
List the fields 0of applications where fluid power can be used more effectively than any power sources. Explain in short.
6 M
2(b)
State types in filters and draw their various locations used in fluid power system in details.
8 M
2(c)
State and explain govering law used in fluid power system in details.
6 M
Solve any one question from Q.3(a,b,c) &Q.4(a,b,c)
3(a)
Draw and explain any three center position of direction control valve used in industrial circuit.
6 M
3(b)
What is the purpose of providing pilot operated cehck valve in hydraulic circuit. Explain in short a typical application of pilot operated check valve.
6 M
3(c)
Draw the counterbalance circuit and explain it's working.
6 M
4(a)
Explain regenerative circuit for following conditions.
i) when the speed of the extension stroke will be equal to the retraction stroke of the cylinder.
ii) When the sppped of the extension stroke will be greater than the retraction stroke of the cyclinder.
i) when the speed of the extension stroke will be equal to the retraction stroke of the cylinder.
ii) When the sppped of the extension stroke will be greater than the retraction stroke of the cyclinder.
6 M
4(b)
Dra the fail safe circuit and explain it's working.
6 M
4(c)
What are the possibilities to draw synchronization circuit explain any one of the circuit in details.
6 M
Solve any one question from Q.5(a,b,c) &Q.6(a,b,c)
5(a)
Explain with a neat sketch the value the shuttle valve and draw a typical circuit showing all parts.
6 M
5(b)
Explain with a neat sketch the working of a qucik exhaust valve.
6 M
5(c)
What are various efficiencies of hydraulic
4 M
6(a)
Draw circuit for:
i) Controlling speed of pneumatic double acting cylinder.
ii) Speed control of a pneumatic motor
i) Controlling speed of pneumatic double acting cylinder.
ii) Speed control of a pneumatic motor
6 M
6(b)
Craw a typical compressed air generation and distribution system .
6 M
6(c)
Explain with a sketch a typical air motor
4 M
Solve any one question from Q.7 &Q.8
7
A machine has two slides ?A? and ?B? which are to be operated hydraulically. The cylinder ?A? has a load of 10 KN and a stroke of 50cm to be completed in 20 sec. The cylinder ?B? has to overcome a load of 15 KN and has a stroke of 50 cm to be complete in 29 sec. The two cylinders are to be moved simultaneously. They are to be retracted as soon as they reach the end position. The loads during returns, strokes are 5 KN and 3.5 KN respectively. Individual direction control valves are provided for the two cylinders. Draw a suitable circuit to achieve this requirement. Select different components you have used in the circuit from the given data mention the rating of the components in case it is not available in the given data. Assume reasonable values of data in case if it is not provided in the problems (Discuss functional approach, strength approach and selection approach along with suitable circuit diagram)
16 M
8
Two identical cylinders A and B are to be operated simultaneously. The cylinder A moves against a load of 25 KN while the cylinder B has a load
of 20 KN. Both the cylinders have a stroke of 1 m. The working stroke is to be completed in about 20 seconds time. The return stroke of cylinder B is to start only after the cylinder A is completely retracted. The return speeds are to be as fast as possible. Draw a circuit which will fulfill these requirements. Select different components you have used in the circuit from the given data mention the rating of the components in case it is not available In the given data. Assume reasonable values of data in case if it is not provided in the problems (Discuss functional approach, strength approach
and selection approach along with suitable circuit diagram)
1) Section Strainer:
2) Pressure Gauge:
3) Vane Pump:
!mage
1) Section Strainer:
| Model | Flow Capacity (/pm) |
| S1 | 38 |
| S2 | 76 |
| S3 | 152 |
2) Pressure Gauge:
| Model | Range(bar) |
| PG1 | 0-25 |
| PG2 | 0-40 |
| PG3 | 0-100 |
| PG4 | 0-160 |
3) Vane Pump:
!mage
16 M
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