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

Which factor does not affect boundary layer thickness?

Pressure

Velocity

Temperature

2 / 40

The boundary layer thickness increases with _______.

Pressure

Velocity

Distance

3 / 40

Which type of flow has a more chaotic motion?

Turbulent

Transitional

Laminar

4 / 40

The flow in the boundary layer is predominantly _______.

Irrotational

Inviscid

Viscous

5 / 40

What is the primary cause of skin friction drag?

Velocity

Pressure

Shear stress

6 / 40

Which law describes the velocity distribution in a boundary layer?

Stokes'

Bernoulli's

Prandtl's

7 / 40

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

Inflection point

Transition point

Critical point

8 / 40

Boundary layer separation occurs when _________.

Shear stress

Pressure

Velocity

9 / 40

Which type of boundary layer is more difficult to predict?

Laminar

Turbulent

Transitional

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 _______.

Leading edge

Trailing edge

Middle

12 / 40

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

No effect

Thickening

Thinning

13 / 40

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

Thinning

No effect

Thickening

14 / 40

Boundary layer separation is more likely to occur at _________.

Convex surfaces

Concave surfaces

Flat surfaces

15 / 40

The boundary layer thickness decreases with _______.

Increase

Reynolds number

Pressure

16 / 40

Which parameter is used to determine the boundary layer thickness?

Reynolds number

Mach number

Boundary layer thickness

17 / 40

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

Reynolds number

Prandtl number

Mach number

18 / 40

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

Parabolic

Exponential

Linear

19 / 40

What type of flow has a thicker boundary layer?

Turbulent

Transitional

Laminar

20 / 40

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

Laminar

Transitional

Turbulent

21 / 40

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

Constant

Variable

Zero

22 / 40

Which type of flow has a thicker boundary layer?

Laminar

Turbulent

Transitional

23 / 40

What type of boundary layer has a higher drag coefficient?

Transitional

Turbulent

Laminar

24 / 40

Boundary layer separation is more likely to occur at _________.

Flat surfaces

Concave surfaces

Convex surfaces

25 / 40

Boundary layer separation is less likely to occur at _________.

Flat surfaces

Convex surfaces

Concave surfaces

26 / 40

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

Mach number

Prandtl number

Reynolds number

27 / 40

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

Critical point

Inflection point

Transition point

28 / 40

Which type of flow has a more orderly motion?

Turbulent

Transitional

Laminar

29 / 40

The boundary layer thickness is smallest near the _______.

Leading edge

Trailing edge

Middle

30 / 40

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

Middle

Trailing edge

Leading edge

31 / 40

The boundary layer thickness decreases with _______.

Pressure

Reynolds number

Increase

32 / 40

What is the main cause of skin friction drag?

Pressure

Velocity

Shear stress

33 / 40

Boundary layer thickness increases with _______.

Decrease

Velocity

Distance

34 / 40

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

Supersonic

Steady

Unsteady

35 / 40

Which parameter characterizes the type of boundary layer?

Mach number

Froude number

Reynolds number

36 / 40

In the boundary layer, the velocity _______.

Decreases

Remains constant

Increases

37 / 40

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

Reynolds number

Froude number

Mach number

38 / 40

In the boundary layer, the velocity _______.

Increases

Decreases

Remains constant

39 / 40

What is the definition of boundary layer?

Indefinite

Finite

Defined

40 / 40

Which factor does not affect boundary layer thickness?

Temperature

Velocity

Pressure

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