GTU BE/B.Tech 2018 Winter Question Papers || Gujarat Technological University
Subject Code: 2171912
GUJARAT TECHNOLOGICAL UNIVERSITY
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BE - SEMESTER-VII (NEW) EXAMINATION - WINTER 2018
Subject Name: Oil Hydraulics & Pneumatics
Time: 10:30 AM TO 01:00 PM
Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
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| Q.1 | (a) Draw the general layout of hydraulic system. Explain the function of each component. | 03 |
| (b) Define Control Valve. List the different types of control valves. | 04 | |
| (c) Give the classification of Pumps. Sketch & Explain working of Rotary Vane type of pump. | 07 | |
| OR | ||
| Q.2 | (a) Write application of Hydraulic system & Pneumatic system. | 03 |
| (b) Sketch & Explain the working of Ge-rotor pump with neat sketch. | 04 | |
(c) Give ISO/ANSI symbol of following.
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| OR | ||
| Q.3 | (a) Explain working of axial in line swash plate pump with neat sketch. | 04 |
| (b) Draw speed controlled actuator, Meter- out circuits for DAC for extension. | 07 | |
| OR | ||
| Q.4 | (a) Draw general layout of pneumatic system & write function of each components. | 03 |
| (b) What is the function of pressure Reducing Valve? sketch & explain with neat sketch the working of pressure reducing valve | 04 | |
| (c) Sketch & explain Counter Balance valve construction & its working. | 07 | |
| OR | ||
| Q.5 | (a) List the Power loss in flow control circuits & explain in detail. | 03 |
| (b) Explain One Industrial application of hydraulic circuit with neat sketch. | 04 | |
| (c) Explain 4/3 sliding spool direction control valve working. | 07 | |
| OR | ||
| (a) Write a note on thermocouple type temperature sensor | 03 | |
| (b) Bleed off Circuits — sketch & explain its working. | 04 | |
| (c) Draw Symbol of filter & explain the working of by-pass type filter | 07 | |
| OR | ||
| Q.5 | (a) List the electric devices used in the control of fluid power system. | 03 |
| (b) What do you mean Automation? Give classification of Automation. | 04 | |
| (c) Sketch & explain Pneumatic Circuit using Quick Exhaust valve. | 07 | |
| OR | ||
| (a) What is an actuator? Draw hydraulic system operating double acting actuator with 3/2 DCV | 03 | |
| (b) Explain Cascading Method for sequencing. | 03 | |
| (c) If diameter of piston is 60 mm, diameter of piston rod is 10 mm, & air pressure is 100 N/mm², what will be the force in advance stroke & return stroke. | 04 | |
| (d) Draw Pneumatic circuit for operating DAC by 4/3 DCV. | 07 |
Date: 19/11/2018
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Total Marks: 70
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