Solve this multiple-choice question and choose the correct option.

Home » Mechanical Engineering » Hydraulics and Fluid Mechanics

Venturimeter: velocity at the throat versus at the inlet In a venturimeter working under full-bore flow, compare the fluid velocity at the throat with the velocity at the inlet. Choose the correct relation.

Difficulty: Easy

Velocity at the throat is greater than at the inlet
Velocity at the throat is lower than at the inlet
Velocity at the throat equals the inlet velocity
Cannot be compared without density data

Correct Answer: Velocity at the throat is greater than at the inlet

Explanation:

Concept/ApproachFrom continuity, Q = A V = constant. Because the throat area is smaller than the inlet area, the velocity must increase at the throat to maintain the same discharge.

Final AnswerVelocity at the throat is greater than at the inlet

← Previous Question Next Question→

More Questions from Hydraulics and Fluid Mechanics

Laminar flow in a circular pipe: friction factor dependence on Reynolds number For viscous (laminar) flow in a pipe of uniform diameter, the Darcy friction factor varies as which function of the Reynolds number R_N? Choose the correct expression.
Coefficient of contraction for an orifice Define the coefficient of contraction C_c for a sharp-edged orifice in terms of areas. Choose the correct ratio.
Floating body stability: response to a small angular displacement A floating body is given a small angular displacement and returns to its original position. Identify the equilibrium classification. Choose the correct option.
Power transmitted through a pipeline with head loss Let w be the specific weight (N/m³), Q the discharge (m³/s), H the supply head and h_f the frictional head loss. Select the correct expression for the power delivered at the outlet.
Examples of laminar (low Reynolds number) flow Identify which of the following are classic examples of laminar flow regimes. Choose the correct option.
Dam stability checks: essential limit states When assessing the stability of a gravity wall or dam, which conditions must be verified? Choose the correct option.
Venturimeter installation orientation A venturimeter is used for measuring discharge in a full pipe. Select the correct statement regarding its installation orientation and location.
Definition check: ideal fluid properties An ideal fluid is defined by two key properties in continuum mechanics. Decide whether the statement is correct: "An ideal fluid is frictionless and incompressible." Choose the correct option.
Head loss due to sudden enlargement in a pipe: write the correct formula A pipeline of diameter d₁ along AB carries liquid and is suddenly enlarged at B to diameter d₂ for the downstream length BC. Assume steady incompressible flow with negligible losses other than the separation loss at the enlargement. Choose the expression for the head loss across the sudden enlargement.
Rectangular notch (weir) discharge formula For a sharp-crested rectangular notch of width b with head H above the sill and coefficient of discharge C_d, select the correct standard expression for discharge.

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion