Viscous Fluid Flow MCQs with Answers

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Viscous Fluid Flow Online Quiz

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• Test Name: Viscous Fluid Flow MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Viscous Fluid Flow

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1 / 40

The no-slip condition states that fluid velocity is _______ at a solid boundary.

Maximum

Zero

Minimum

2 / 40

What is the dimension of dynamic viscosity?

[M][L]^-1[T]^-1

[M][L][T]^-2

[M][L][T]^-1

3 / 40

The Navier-Stokes equations describe the motion of _______ fluids.

Inviscid

Ideal

Viscous

4 / 40

Viscous fluid flow is more common in _______ flow regimes.

High Reynolds

High Mach

Low Reynolds

5 / 40

What is the typical behavior of velocity near a solid boundary in viscous flow?

Increases linearly

Remains constant

Decreases linearly

6 / 40

What is the ratio of dynamic viscosity to density called?

Prandtl number

Kinematic viscosity

Reynolds number

7 / 40

What is the main cause of pressure drop in viscous fluid flow?

Vorticity

Inertia

Friction

8 / 40

Viscous fluid flow is characterized by _______ pressure gradients.

Gradual

Oscillatory

Sudden

9 / 40

Viscous fluid flow is more _______ than inviscid flow.

Predictable

Chaotic

Stable

10 / 40

The dynamic viscosity of a fluid is a measure of its resistance to _______.

Compression

Shear

Flow

11 / 40

What property of a fluid determines its resistance to flow?

Viscosity

Density

Temperature

12 / 40

Which phenomenon causes viscous fluid flow to be laminar or turbulent?

Shear stress

Pressure gradients

Vorticity

13 / 40

Viscous fluid flow is more common in _______ environments.

Low-viscosity

Low-pressure

Dense

14 / 40

In viscous fluid flow, shear stress is proportional to _______.

Pressure

Temperature

Velocity gradient

15 / 40

What is the SI unit of dynamic viscosity?

Newton-second/meter^2 (N·s/m^2)

Pascal-second (Pa·s)

Pascal (Pa)

16 / 40

Viscous fluid flow is more _______ to flow separation.

Prone

Neutral

Resistant

17 / 40

Which type of flow exhibits a significant pressure drop along the flow direction?

Ideal

Inviscid

Viscous

18 / 40

The viscosity of a fluid _______ with increasing temperature.

Increases

Decreases

Remains constant

19 / 40

What is the viscosity of air compared to water?

Lower

Equal

Higher

20 / 40

Viscous fluid flow is characterized by _______ Reynolds numbers.

High

Moderate

Low

21 / 40

The dynamic viscosity of a fluid is typically measured in _______.

Pascal (Pa)

Pascal-seconds (Pa·s)

Newton-seconds/meter^2 (N·s/m^2)

22 / 40

The Reynolds number determines the transition between _______ flow regimes.

Steady, unsteady

Laminar, turbulent

Compressible, incompressible

23 / 40

What is the primary factor affecting the viscosity of a fluid?

Molecular structure

Temperature

Density

24 / 40

Viscous fluid flow is characterized by _______ motion.

Slow

Rapid

Chaotic

25 / 40

Viscous fluid flow is more _______ than inviscid flow.

Predictable

Unstable

Chaotic

26 / 40

Viscous fluid flow exhibits significant _______ loss.

Heat

Energy

Momentum

27 / 40

Which parameter characterizes the relative importance of inertial and viscous forces?

Mach number

Reynolds number

Froude number

28 / 40

Viscous fluid flow is characterized by _______ fluctuations.

Irregular

Large

Small

29 / 40

What phenomenon causes the no-slip condition in viscous fluid flow?

Molecular adhesion

Vorticity

Pressure gradients

30 / 40

Viscous fluid flow is characterized by _______ Reynolds numbers.

Moderate

High

Low

31 / 40

The coefficient of dynamic viscosity is also known as _______.

Absolute viscosity

Fluidity

Viscous drag

32 / 40

What is the effect of increasing temperature on the viscosity of most fluids?

Remains constant

Decreases

Increases

33 / 40

What is the primary cause of drag in viscous fluid flow?

Pressure gradients

Inertia

Friction

34 / 40

Which parameter determines the resistance of a fluid to flow?

Viscosity

Temperature

Density

35 / 40

Viscous fluid flow is more _______ to energy dissipation.

Neutral

Prone

Resistant

36 / 40

Viscous forces are dominant in _______ flow.

Transitional

Laminar

Turbulent

37 / 40

The Poiseuille equation describes flow through _______.

Circular pipes

Porous media

Open channels

38 / 40

Which law describes the relationship between shear stress and strain rate in a fluid?

Poiseuille's

Newton's

Bernoulli's

39 / 40

The dynamic viscosity of a fluid is typically _______ with increasing pressure.

Decreases

Increases

Constant

40 / 40

What is the dynamic viscosity of water at room temperature?

~1 mPa·s

~1 Pa·s

~1 cP

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