Exam Details
| Subject | design of hydraulic and pneumatic system | |
| Paper | ||
| Exam / Course | m.tech | |
| Department | ||
| Organization | Institute Of Aeronautical Engineering | |
| Position | ||
| Exam Date | July, 2018 | |
| City, State | telangana, hyderabad |
Question Paper
Hall Ticket No Question Paper Code: BCC004
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
M.Tech II Semester End Examinations (Regular Supplementary) July, 2018
Regulation: IARE-R16
Design of Hydraulic and pneumatic systems
(CAD/CAM)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. Explain the physical properties of fluids. List out the merits, demerits and applications.
Differentiate hydraulic and pneumatic systems and applications.
2. Describe the components of hydraulic systems and discuss briefly.
An oil having a density of 0.89 g/cm3 is tested using a capillary tube viscometer. The given
amount of oil flowed through the capillary tube in 250 s. The calibration constant is 0.1. Find the
kinematic and absolute viscosities in units of centiStokes and centiPoise respectively.
UNIT II
3. Explain the construction and working of vane pump with a neat sketch.
A pump has displacement volume of 100 cm3. It delivers 0.0015 m3/sec at 1000 rpm and 70 bars.
If the prime mover input torque is 120
i. What is the overall efficiency of the pump?
ii. What is the theoretical torque required to operate the pump?
4. Explain the construction and working of piston pump.
Describe the various mountings of hydraulic cylinder and discuss briefly.
UNIT III
5. Design a hydraulic power pack of 25 liter capacity with a gear pump and induction motor and
other required elements.
Describe the cooling system used for hydraulic power pack.
6. Write the design procedure for design of pressure relief valve. Explain the importance of pressure
relief valve.
Explain the criteria for selection of power pack for a particular application. What the factors are
taken into consideration while selecting power pack.
Page 1 of 2
UNIT IV
7. Design a sequencing circuit used for hydraulic system used for industrial applications.
Explain the construction and working of pressure relief valve with neat sketch.
8. Design a hydraulic circuit for varying speed of hydraulic cylinder.
Explain the construction and working of any one type of gas accumulator with neat sketch.
UNIT V
9. Explain the functions of PLC with block diagram. Write the various applications of PLC.
Describe the various recommendations for maintaining of hydraulic circuits.
10. Explain PLC control of hydraulic cylinder above and describe the maintainince and trouble
shooting.
Explain how micro controllers are used for automation with a circuit diagram.
INSTITUTE OF AERONAUTICAL ENGINEERING
(Autonomous)
M.Tech II Semester End Examinations (Regular Supplementary) July, 2018
Regulation: IARE-R16
Design of Hydraulic and pneumatic systems
(CAD/CAM)
Time: 3 Hours Max Marks: 70
Answer ONE Question from each Unit
All Questions Carry Equal Marks
All parts of the question must be answered in one place only
UNIT I
1. Explain the physical properties of fluids. List out the merits, demerits and applications.
Differentiate hydraulic and pneumatic systems and applications.
2. Describe the components of hydraulic systems and discuss briefly.
An oil having a density of 0.89 g/cm3 is tested using a capillary tube viscometer. The given
amount of oil flowed through the capillary tube in 250 s. The calibration constant is 0.1. Find the
kinematic and absolute viscosities in units of centiStokes and centiPoise respectively.
UNIT II
3. Explain the construction and working of vane pump with a neat sketch.
A pump has displacement volume of 100 cm3. It delivers 0.0015 m3/sec at 1000 rpm and 70 bars.
If the prime mover input torque is 120
i. What is the overall efficiency of the pump?
ii. What is the theoretical torque required to operate the pump?
4. Explain the construction and working of piston pump.
Describe the various mountings of hydraulic cylinder and discuss briefly.
UNIT III
5. Design a hydraulic power pack of 25 liter capacity with a gear pump and induction motor and
other required elements.
Describe the cooling system used for hydraulic power pack.
6. Write the design procedure for design of pressure relief valve. Explain the importance of pressure
relief valve.
Explain the criteria for selection of power pack for a particular application. What the factors are
taken into consideration while selecting power pack.
Page 1 of 2
UNIT IV
7. Design a sequencing circuit used for hydraulic system used for industrial applications.
Explain the construction and working of pressure relief valve with neat sketch.
8. Design a hydraulic circuit for varying speed of hydraulic cylinder.
Explain the construction and working of any one type of gas accumulator with neat sketch.
UNIT V
9. Explain the functions of PLC with block diagram. Write the various applications of PLC.
Describe the various recommendations for maintaining of hydraulic circuits.
10. Explain PLC control of hydraulic cylinder above and describe the maintainince and trouble
shooting.
Explain how micro controllers are used for automation with a circuit diagram.
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