Boundary Layer Theory MCQs with Answers

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Boundary Layer Theory Online Quiz

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• Test Name: Boundary Layer Theory MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Boundary Layer Theory

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1 / 40

What is the primary effect of increasing Reynolds number on the boundary layer?

No effect

Thickening

Thinning

2 / 40

The boundary layer thickness increases with _______.

Pressure

Distance

Velocity

3 / 40

Which type of boundary layer is more difficult to predict?

Transitional

Laminar

Turbulent

4 / 40

Which type of flow has a thicker boundary layer?

Transitional

Laminar

Turbulent

5 / 40

What type of boundary layer has a higher drag coefficient?

Laminar

Transitional

Turbulent

6 / 40

What is the primary cause of skin friction drag?

Shear stress

Pressure

Velocity

7 / 40

Which parameter characterizes the type of boundary layer?

Froude number

Reynolds number

Mach number

8 / 40

Which type of flow has a more chaotic motion?

Transitional

Laminar

Turbulent

9 / 40

What is the typical shape of a velocity profile in the boundary layer?

Linear

Parabolic

Exponential

10 / 40

The boundary layer thickness at a given point on a flat plate is _______.

Variable

Constant

Zero

11 / 40

The boundary layer thickness is smallest near the _______.

Trailing edge

Middle

Leading edge

12 / 40

Boundary layer separation is more likely to occur at _________.

Convex surfaces

Flat surfaces

Concave surfaces

13 / 40

Which type of flow is primarily studied in boundary layer theory?

Laminar

Transitional

Turbulent

14 / 40

What is the primary effect of increasing Reynolds number on the boundary layer?

Thickening

No effect

Thinning

15 / 40

The boundary layer thickness decreases with _______.

Increase

Pressure

Reynolds number

16 / 40

The point at which the boundary layer transitions from laminar to turbulent flow is called _______.

Transition point

Critical point

Inflection point

17 / 40

Which factor does not affect boundary layer thickness?

Pressure

Temperature

Velocity

18 / 40

Boundary layer separation occurs when _________.

Pressure

Shear stress

Velocity

19 / 40

What is the main cause of skin friction drag?

Shear stress

Velocity

Pressure

20 / 40

In the boundary layer, the velocity _______.

Increases

Decreases

Remains constant

21 / 40

The boundary layer thickness is typically expressed in terms of _______.

Reynolds number

Prandtl number

Mach number

22 / 40

The boundary layer thickness decreases with _______.

Reynolds number

Increase

Pressure

23 / 40

Which factor does not affect boundary layer thickness?

Temperature

Velocity

Pressure

24 / 40

Boundary layer thickness increases with _______.

Velocity

Decrease

Distance

25 / 40

Which law describes the velocity distribution in a boundary layer?

Stokes'

Bernoulli's

Prandtl's

26 / 40

Which type of flow has a more orderly motion?

Transitional

Laminar

Turbulent

27 / 40

Which parameter is used to characterize the type of boundary layer?

Mach number

Froude number

Reynolds number

28 / 40

Boundary layer separation is less likely to occur at _________.

Flat surfaces

Convex surfaces

Concave surfaces

29 / 40

The point at which the boundary layer transitions from laminar to turbulent flow is called _______.

Transition point

Inflection point

Critical point

30 / 40

The boundary layer on a flat plate starts from the _______.

Leading edge

Trailing edge

Middle

31 / 40

The boundary layer thickness at a given point on a flat plate is _______.

Variable

Zero

Constant

32 / 40

The flow in the boundary layer is predominantly _______.

Inviscid

Viscous

Irrotational

33 / 40

What is the definition of boundary layer?

Indefinite

Defined

Finite

34 / 40

In the boundary layer, the velocity _______.

Increases

Remains constant

Decreases

35 / 40

Boundary layer theory is based on the assumption of _______ flow.

Supersonic

Steady

Unsteady

36 / 40

Boundary layer separation is more likely to occur at _________.

Flat surfaces

Convex surfaces

Concave surfaces

37 / 40

The boundary layer thickness is smallest near the _______.

Leading edge

Trailing edge

Middle

38 / 40

What type of flow has a thicker boundary layer?

Laminar

Transitional

Turbulent

39 / 40

The boundary layer thickness is typically expressed in terms of _______.

Mach number

Reynolds number

Prandtl number

40 / 40

Which parameter is used to determine the boundary layer thickness?

Reynolds number

Mach number

Boundary layer thickness

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