GTU BE/B.Tech 2019 Winter Question Papers || Gujarat Technological University
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GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER- III (New) EXAMINATION — WINTER 2019
Subject Code: 3132305 Date: 03/12/2019
Subject Name: Hydraulics & Pneumatics in Plastic Industry
Time: 02:30 PM TO 05:00 PM Total Marks: 70
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Instructions:
- Attempt all questions.
- Make suitable assumptions wherever necessary.
- Figures to the right indicate full marks.
| Q.1 | (a) Explain in brief about Pascal’s law | 03 |
| (b) Draw symbols: (1) Cylinder,double acting (2) Filter (3) Pressure switch (4) Check valve | 04 | |
| (c) List advantages of Hydraulic system | 07 | |
| Q.2 | (a) List disadvantages of Hydraulic system | 03 |
| (b) Explain Bernoulli’s principle | 04 | |
| (c) Compare: Hydraulic and Pneumatic | 07 | |
| OR | ||
| (c) Explain four way valve in detail. | 07 | |
| Q.3 | (a) Explain about Packing and Seals in brief | 03 |
| (b) Solve: In hydraulic mechanism 100 kg force is applied on pump side whose piston diameter is 10 cm.If jack side piston diameter is 40 cm,calculate the force developed on the top of the jack . Also calculate the movement of jack piston if pump plunger moves 500mm | 04 | |
| (c) Explain ideal characteristic required for hydraulic oil | 07 | |
| OR | ||
| Q.3 | (a) Give classification of valves | 03 |
| (b) Define (1) Pressure (2) Power(3) Potential energy (4) Servo valve | 04 | |
| (c) Draw & Explain about. Gear Pump in detail | 07 | |
| Q.4 | (a) Explain about Gauges used in hydraulic system | 03 |
| (b) Explain about connecters in brief | 04 | |
| (c) Draw & ExplainPilot operated check valve | 07 | |
| OR | ||
| Q.4 | (a) Draw the Filteration circuit | 03 |
| (b) Give classification of Hydraulic Pumps | 04 | |
| (c) Explain single stage pressure intensifier with neat sketch | 07 | |
| Q.5 | (a) Differentiate :Filter and Strainer | 03 |
| (b) Give classification of check valves | 04 | |
| (c) Explain single acting Air compressor in detail with neat sketch | 07 | |
| OR | ||
| Q.5 | (a) List the different types of Accumulators | 03 |
| (b) Draw symbols (1) temperature gauge (2) Two-way valve (3) Electric motor (4) Accumulators, Gas charged | 04 | |
| (c) Draw and Explain Deceleration circuit | 07 |
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