Question

The velocity with which the water approaches a notch is called

• A. Velocity of whirl
• B. Velocity of approach
• C. Velocity of flow
• D. Shear velocity

Answer 1

Answer:

B. Velocity of approach

Velocity of approach is the correct answer. It refers to the velocity at which water approaches a weir or notch before flowing over it Whirl velocity is the tangential component of absolute velocity at the blade inlet and outlet of a turbine rotor Shear velocity, also known as friction velocity, is used to compare true velocities in fluid mechanics.