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An orifice is known as large orifice when the head of liquid from the center of orifice is:

An orifice is known as large orifice when the head of liquid from the center of orifice is: Correct Answer Less than 5 times the depth of orifice

Concept:

Orifice:

  • The orifice is a small opening of any cross-section on the side or at the bottom of a tank, through which a fluid is flowing.
  • It is used for measuring the rate of flow of fluid by measuring the pressure decrease across the opening.

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  • According to the classification of the shape of the orifice, If the head of the liquid from the center of the orifice is less than five times the depth orifice, then it is known as the large orifice and if the head of the liquid is more than five times the depth, it is known as a small orifice.
  • Generally, the orifice diameter is kept half of the diameter of the pipe.
  • It is economical and less space is required for fitting.
  • The value of the coefficient of discharge (Cd) varies between 0.60-0.65.
  • The head loss is more in the orifice meter as compared to the venturi meter.

Related Questions

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)
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