EXAM002

KATHIR COLLEGE OF ENGINEERING “Wisdom Tree” Coimbatore-641062DEPARTMENT OF MECHANICAL ENGINEERING

CIA TEST-I SUB: 2305 / APPLIED HYDRAULICS AND PNUEMATICS Year/sem: III YEAR / V SEM MAX MARKS: 50 Date: 20.09.2013 (FN) TIME: 9.30 AM-11.00 AM

PART-A (Answer all questions) 9X 2 = 18

1. Write down the principle of pump2. Name any four characteristics of pumps3. List out the classification of pump4. What is the need for synchronization of hydraulic cylinder5. Define non-positive displacement pump6. Define variable displacement pump7. Draw diagrams of internal and external gear pumps8. Define slip9. Define cavitation

PART-B (Answer any two) 2X 16 = 32

10. Explain lobe pump,gerotor pump & screw pump

11. Explain inline axial piston pump and bent axis piston pump with neat diagram

12. Draw radial piston pump, balanced vane pump & un balanced vane pump. and also list out the checklist for the pump selection

EXAM002

KATHIR COLLEGE OF ENGINEERING“Wisdom Tree” Coimbatore-641062

DEPARTMENT OF MECHANICAL ENGINEERING

CIA TEST-I SUB: ME 2305 / APPLIED HYDRAULICS AND PNUEMATICS Year/ sem: III YEAR / V SEM MAX MARKS: 50

Date: 20.09.2013 (FN) TIME: 9.30 AM-11.00 AM

PART-A (Answer all questions) 9X 2 = 18

1. Write down the principle of pump2. Name any four characteristics of pumps3. List out the classification of pump4. What is the need for synchronization of hydraulic cylinder5. Define non-positive displacement pump6. Define variable displacement pump7. Draw diagrams of internal and external gear pumps8. Define slip9. Define cavitation

PART-B (Answer any two) 2X 16 = 32

10. Explain lobe pump,gerotor pump & screw pump

11. Explain inline axial piston pump and bent axis piston pump with neat diagram

12. Draw radial piston pump, balanced vane pump & un balanced vane pump. and also list out the checklist for the pump selection

2. The following data refer to a steam engine. Dia of piston=240mm,stroke=600mm,length of connecting rod=1.5m,mass of reciprocating parts=300kg,mass of connecting rod=250kg,speed=125rpm,centre of gravity of connecting rod from crank pin=500mm,radius of gyration of the connecting rod about an axis through the centre of gravity=650mm.Determine the magnitude and direction of the torque exerted on the crank shaft when the crank has turned through 30° from inner dead centre.

3. The turning moment diagram for a multicylinder engine has ben drawn to a vertical scale 1mm=600Nm and a horizontal scale of 1mm=4°.The area above and below the mean torque line are -28,+380,-260,+310,-300,+242, -380,+265,-299 mm2 .When the engine is running at 420rpm,find the mass of the flywheel.Take radius of gyration of flywheel as 1m.

2. The following data refer to a steam engine. Dia of piston=240mm,stroke=600mm,length of connecting rod=1.5m,mass of reciprocating parts=300kg,mass of connecting rod=250kg,speed=125rpm,centre of gravity of connecting rod from crank pin=500mm,radius of gyration of the connecting rod about an axis through the centre of gravity=650mm.Determine the magnitude and direction of the torque exerted on the crank shaft when the crank has turned through 30° from inner dead centre.

3. The turning moment diagram for a multicylinder engine has ben drawn to a vertical scale 1mm=600Nm and a horizontal scale of 1mm=4°.The area above and below the mean torque line are -28,+380,-260,+310,-300,+242, -380,+265,-299 mm2 .When the engine is running at 420rpm,find the mass of the flywheel.Take radius of gyration of flywheel as 1m.