RVUNL ME Quiz 6

Attempt now to get your rank among 403 students!

Question 1

Boundary layer flow seperates from the surface if

• A
• B
• C
• DBoundary layer thickness is zero.

Question 2

The hydrodynamic boundary layer thickness is defined as the distance from the surface where the _________.

• AVelocity equals to the local external velocity.
• BVelocity equals the approach velo-city.
• CMomentum equals 99% of the momentum of the free stream.
• DVelocity equals 99% of the local external velocity.

Question 3

In Laminar flow which force is dominant

• AViscous force
• BPressure force
• CGravity force
• DInertia force

Question 4

Hydrodynamic entrance length for laminar flow is

• ALess than the turbulent length
• BGreater than the turbulent flow
• CEqual to turbulent flow
• DNo such relation

Question 5

Displacement thickness is 4 mm, energy thickness is 3 mm and the momentum thickness is 2 mm, the shape factor is

• A4/3
• B2
• C3/4
• D1/2

Question 6

Displacement thickness ()is given by

• A
• B
• C
• D

• 403 attempts
• 0 upvotes
• 2 comments