Maharashtra State Board of Technical Education 2012-5th Sem Diploma Automobile Engineering for in Group Subject Hydraulics & Pneumatics(12170) - Question Paper
MSBTE Sample ques. Paper for Diploma in Automobile Engineering Group
Fifth Semester
Subject Hydraulics & Pneumatics(12170)
Scheme - E
Sample Question Paper
Course Name : Diploma in Automobile Engineering Course Code : AE Semester : Fifth
Subject Title : Hydraulics & Pneumatics
12170
Marks : 100 Time: 3 Hrs.
Instructions:
1. All questions are compulsory.
2. Illustrate your answers with neat sketches wherever necessary
3. Figures to the right indicate full marks
4. Assume suitable data if necessary
5. Preferably, write the answers in sequential order.
6. Assume suitable data if necessary.
Q.l A) Attempt any THREE of the following:
12 Marks . Does the specific weight of a
1. Define specific weight and specific gravity of a liquid liquid affect the capillary rise of liquid? If yes how?
2. Draw a neat sketch of micro-manometer and label it.
3. Define steady & unsteady flow. Give its example.
4. With a neat Sketch explain Pitot tube.
Q.l B) Attempt any ONE of the following: 06 Marks
1. Explain with neat sketch Vane type air motor.
2. Explain construction and working of Poppet valve with neat sketch.
Q.2 Attempt any FOUR of the following: 16 Marks
1. Explain vena-contracta with neat sketch.
2. Draw a neat sketch of Non return valve & explain it.
3. Why rotary compressor is suitable for Tubrocharger?
4. List different types of materials used for gaskets stating their applications.
5. State the principles on which pressure measuring devices are classified & classify the devices.
Q.3 Attempt any FOUR of the following: 16 Marks
1. Draw a neat labled sketch of meter-in circuit.
2. Draw a symbol for 2/2 direction control valve & variable speed air motor.
3. Draw a neat sketch of rotary spool valve used in power steering.
4. Explain with neat sketch pneumatic speed control circuit.
5. Give the classification of filters & state their applications.
Q.4 A) Attempt any THREE of the following: 12Marks
1. Represent schematically atmospheric pressure, gauge pressure & absolute pressure.
2. Explain with neat sketch working of hydraulic press.
3. Explain the flexible hose. What is difference between hydraulic and pneumatic piping.
4. State the law of continuity. Water flows through a pipe of diameter 1.5m with a velocity of 2 m/s. What is the rate of discharge through the pipe in Iph?
Q.4 B) Attempt any ONE of the following: 06 Marks
1. Compare between hydraulic & pneumatic circuits.
2. Draw a layout of Air brake system & explain its working.
Q.5 Attempt any TWO of the following: 16 Marks
1. A pipe 300 m long has a slope of 1 in 100 and tapers from 1.2 m diameter at the high end to 0.6m diameter at the low end. Quantity of water flowing is 5400 liters per minute. If the pressure at high end is 68.67 kPa find the pressure at the low end. Neglect losses.
2. What Is the difference between the reciprocating compressor and rotary compressor?
3. Explain with neat sketch swash plate type of pump.
Q.6 Attempt any TWO of the following: 16 Marks
1. Explain with neat sketch double acting reciprocating pump.
2. Draw the hydraulic circuit used for quick return mechanism of shaper and explain its working.
3. What are the different faults that may occur in centrifugal pump and state their remedies.
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| Earning: Approval pending. |
