ME 55 / Applied Hydraulics and Pneumatics

THE INDIAN ENGINEERING COLLEGE

VADAKANGULAM – 627 116

MECHANICAL ENGINEERING DEPARTMENT

II - Internal Examination (Sep 2011)

ME 55 / Applied Hydraulics and Pneumatics

Date:  17-09-2011                                                                                                                                   Maximum Marks: 50

Time:  09.30 am – 11.30 am                                                                                                                Year / Sem: III / V

Answer ALL questions

PART – A (5x2=10 marks)

1.       Why weight loaded type accumulator is desirable for mobile equipment?                             (2)

2.       Why a lubricator should be used in pneumatic system?                                                                  (2)

3.       How can you specify an air compressor?                                                                                                               (2)

4.       What is the purpose of an air pressure regulator?                                                                             (2)

5.       What are the basic components of pneumatic system?                                                                  (2)

 PART – B (5x8=40 marks)

1.       With a neat sketch, explain the operation of a gas charged piston accumulator.                  (8)

2.       Explain the working principle of Double acting cylinder with neat sketch.                                               (8)

3.       Explain the working principle of Pressure Intensifier with neat sketch.                                    (8)

4.       Design and explain the working of a Regenerative circuit & Sequencing circuit.                   (4+4)

5.       Design and explain the working of a Meter-In circuit and also write the difference between the Meter-In and Meter-Out Flow control valve.                                                                                   (6+2)