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http://s12.postimg.org/spta4jyct/12_3.gif An incompressible non-viscous fluid fl

ID: 2243701 • Letter: H

Question

http://s12.postimg.org/spta4jyct/12_3.gif


An incompressible non-viscous fluid flows through a horizontal pipe that starts out with a certain radius (section A) and then widens to double the radius in section B. What happens to the flow velocity in section B, compared to section A?



Four times the velocity

Twice the velocity
Same velocity
Half the velocity
One fourth the velocity


Suddenly somebody closes a valve in section B, and the flow stops. How do the pressures in sections A and B compare now?
Higher pressure in B than in A
Same pressure in both sections
Lower pressure in B than in A

An incompressible non-viscous fluid flows through a horizontal pipe that starts out with a certain radius (section A) and then widens to double the radius in section B. What happens to the flow velocity in section B, compared to section A?

Explanation / Answer

1-one fourth of velocity(discharge=area*velocity=constant)

2-higher pressure in B than A(bernoulli's theorem)