Why does a water pump becomes ineffective, when water ha to
be raised through a height grater than 30 ft. ?

Answer Posted / arun k s

This is true in the case of a suction pump. In a suction
pump, air is being sucked from the suction pipe by the
pump. Thus the pressure inside the suction pipe reaches
nearly zero but the pressure outside the pipe will be
atmospheric. Thus the higher outside pressure make the
water to rush into the pipe until the pressure developed by
the inside water colomn balances with the atmospheric
pressure.For water, the height reqd. to develop atm.
pressure is 10m (34ft.). You cant lift water beyond that
level using atmospheric pressure.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What is the proper definition of light?

561


What happens when you travel across the dateline?

517


Explain big bang theory?

544


how many neutrons and how many protons are present in a single deuterium nucleus?

606


Does sunlight reflected off a mirror increase the temperature of the sun-rays?

509






Who did first record the sound?

513


Graph between frequency of photon and velocity of photo electron?

525


Why does heated air expand?

547


-100 mmWC means how much kg/cm2

1213


What generates seismic waves?

554


What is an electron?

536


Does water drain counterclockwise in the northern hemisphere and clockwise in the southern hemisphere?

492


What is time?

552


Explain what does hull speed mean?

511


The throbbing caused by sounds of slightly different frequencies that results because of periodic constructive and destructive interference is called:

610