what is cavitation ?

Answer Posted / sivaramakrishnan.a.v.

Cavitation is a phenomenon whereby liquid flowing through a
a valve or pump under reduced pressure(below vapour
pressure)will form gaseous bubbles that will collapse upon
pressure recovery prodcing potential damage to the valve or
pump internals leading to premature failure .Ie the
pressure drops below the vapour pressure leading to
formation of vapour bubbles and tries to increase above the
vapour pressure.This is sserious concern in high pressure
drop applications.

Is This Answer Correct ?    28 Yes 2 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

Sir i am appearing for the section engineer post examination of railway recruitment board.Can you please send me the previous question papers from 2001 to till date.

1596


Tell me how many btu per hour equals 1 ton of air conditioning?

577


DAE Mechanical engineering interview questions

1032


Please inform about mahagenco exam 2010?

2467


What are the causes of dirty lubricating oil?

1452






If we heat the rod what will happen,draw stress & strain curve before after heating ?

1842


different between general arc welding & aluminium welding?

1623


what is draft and draft loss?in a boiler,how is draft created?

1874


What are killed steels and what for these are used ?

643


WHAT ARE EARTH MOVING M/CS? WHAT IS BATCHING PLANT? WHAT IS HYDRAULIC JUMP? WHAT IS TIPPER (EARTH MOVING M/C)?

2262


should cutouts made in main header of metal ducting be deducted from duct measurement.

1753


Wasco Interview 1-the type of transducer that convert mechanical movement into a voltage 2-pump 2500 psi and 100 MG select it 3-modes of heat transfer 4-the difference bet PSIA and PSIG 5-the function of relief valve and no return valve (check valve ) 6-types of bearing general catogires 7-function of bearing 8-compressor surge 9-pump cavitation 10-define critical speed 11-compression ratio decease volumetric ratio ........... 12-using inter-cooling in multi stage compressors to ....... 13-using cascade system in refrigerator function ? 14-define performance and efficiency .

1627


Why do the radiators in your house click when you start the heating system?

670


SIR plz send me old exam papers for RRB chennai

2308


What is meant by transmissivity?

614