Bissoy.com
Doctors Medicines MCQs Q&A

The value of coefficient of velocity for a sharp-edged orifice is of the order of

The value of coefficient of velocity for a sharp-edged orifice is of the order of Correct Answer None of these

  • Coefficient of velocity is defined as the ratio between actual velocity of a jet of liquid at vena-contracta and the theoretical velocity of jet.
  • It varies from 0.95 to 0.99 for different orifice, depending on the shape, size of the orifice and on the head under which flow takes place.
  • The value of coefficient of velocity is 0.98 for sharp edged orifice.

Related Questions

The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)
The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of the orifice)
The discharge through a large rectangular orifice is given by (where H1 = Height of the liquid above the top of the orifice, H2 = Height of the liquid above the bottom of the orifice, b = Breadth of the orifice and Cd = Coefficient of discharge)
A rectangular orifice of 2 m width and 1.2 m deep is fitted in one side of large tank. The easier level on one side of the orifice is 3m above the top edge of the orifice while on the other side of the orifice the water level is 0.5 m below it’s top edge. Calculate discharge if Cd = .64
The discharge through a wholly drowned orifice is given by (where H1 = Height of water (on the upstream side) above the top of the orifice, H2 = Height of water (on the downstream side) above the bottom of the orifice and H = Difference between two water levels on either side of the orifice)
An orifice meter, having an orifice of diameter ‘d’ is fitted in a pipe of diameter D. For this orifice meter, what is the coefficient of discharge Cd?
An orifice is known as large orifice when the head of liquid from the center of orifice is:
The figure shows the cross-sectional diagram of an orifice flow meter with an orifice radius R. Point ‘a’ is 30 R upstream while points ‘b’ and ‘c’ are 0.8 R and 30 R downstream from the orifice respectively. The pressure at points a, b and c are PaPb, and Pc respectively. Then
The discharge through fully submerged orifice is -  Where, H = Difference in level of water H1 = Height of water above the top of the orifice on the upstream side H2 = Height of water above the bottom of the orifice
Find the discharge through totally drowned orifice of width 2.3 m if the difference of water levels on both side of the orifice be 40 cm. The height of water from to and bottom of the orifice are 2.6 m and 2.75 m respectively.