How can we determine whether the flow is laminar or turbulent?

Related MCQs

• The velocity at which the flow changes from laminar flow to turbulent flow is called
• Which among the following is a device that converts a laminar flow into a turbulent flow?
• The depth ‘d’ below the free surface at which the point velocity is equal to the average velocity of flow for a uniform laminar flow with a free surface, will be (where D is the depth of flow.)
• Flow at constant rate through a tapering pipe is i) steady flow ii) uniform flow iii) unsteady flow iv) non-uniform flow The correct answer is
• Surge wave in a rectangular channel is an example of i) steady flow ii) unsteady flow iii) uniform flow iv) non-uniform flow The correct answer is
• For pipes, turbulent flow occurs when Reynolds number is
• What is the effect of change in Reynold’s number on friction factor in turbulent flow?
• The eddy viscosity for turbulent flow is
• The boundary layer thickness in turbulent flow varies as (where x is the distance from leading edge.)
• The distance y from pipe boundary, at which the point velocity is equal to average velocity for turbulent flow, is (where R is radius of pipe.)