The pressure of the liquid flowing through the divergent portion of a Venturimeter
A. Remains constant
B. Increases
C. Decreases
D. Depends upon mass of liquid
Answer: Option B
Solution (By Examveda Team)
The Venturimeter works on Bernoulli’s principle, which relates pressure, velocity, and elevation in a flowing fluid.When fluid enters the converging section, the cross-sectional area decreases, causing velocity to increase and pressure to drop until it reaches the throat — the narrowest point.
In the divergent (diffuser) section after the throat, the cross-sectional area increases. This causes the velocity of the fluid to decrease due to continuity of flow.
According to Bernoulli’s principle, when velocity decreases, the static pressure increases — this is known as pressure recovery.
The increase in pressure is not dependent on the mass of the liquid but on the conversion of kinetic energy back into pressure energy as the fluid decelerates.
Therefore, in the divergent portion of a Venturimeter, the pressure increases.
This Question Belongs to Mechanical Engineering >> Hydraulics And Fluid Mechanics In ME
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It's increased
Pressure increase as area increase and velocity decrease so the correct anwer is B)increase
Option B is the correct answer, ie the pressure should increase in the divergent section of ventury meter
increases
As per Bernoulli's equation as area increases velocity decreases and pressure increases so the right entries option C pressure decreases
B. Increases
And according to continuity equation we know velocity will decrease with increase in area in diverging portion so as the kinetic energy increase and according to bernoulli eq pressure must decrease otherwise law of conservation of energy will be violent.
It should be increases as per Bernoulli's equation
Option B is the correct answer, ie the pressure should increase in the divergent section of ventury meter
i hv some doubt. as per bernaullies theorem pressure should increase through divergent portion @ the expense of K.E .