Compressible Flow MCQs with Answers

AdminMarch 28, 2024

0 7 1 minute read

Welcome to the Compressible Flow MCQs with Answers. In this post, we have shared Compressible Flow Online Test for different competitive exams. Find practice Compressible Flow Practice Questions with answers in Physics Tests exams here. Each question offers a chance to enhance your knowledge regarding Compressible Flow.

Compressible Flow Online Quiz

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Test Name: Compressible Flow MCQ Quiz Practice
Type: Quiz Test
Total Questions: 40
Total Marks: 40
Time: 40 minutes

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Compressible Flow

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1 / 40

Which gas law is used for compressible flow analysis?

a. Boyle's law

b. Charles's law

c. Ideal gas law

2 / 40

The velocity of a flow is supersonic when its Mach number is _____________.

b. Exactly 1

c. Greater than 1

a. Less than 1

3 / 40

In supersonic flow, the Mach cone angle is ____________.

a. Less than 90°

b. Greater than 90°

c. Exactly 90°

4 / 40

The maximum Mach number that can be reached in a convergent-divergent nozzle is limited by the ____________.

a. Divergence angle

c. Throat area

b. Convergence angle

5 / 40

The normal Mach number is ____________ to the flow direction.

a. Parallel

b. Perpendicular

c. Tangential

6 / 40

What type of flow occurs when the Mach number is less than 1?

b. Supersonic

c. Transonic

a. Subsonic

7 / 40

The ratio of specific heats (γ) for air is approximately ____________.

c. 1.4

b. 1

a. 0.71

8 / 40

The local Mach number at a point in a flowing fluid is ____________.

a. Equal to the bulk Mach number

c. Dependent on pressure only

b. Always greater than 1

9 / 40

The critical Mach number is the Mach number at which the flow becomes _________.

c. Supersonic

a. Sonic

b. Subsonic

10 / 40

The Prandtl-Meyer function describes the relationship between ____________.

b. Temperature and pressure

a. Pressure and velocity

c. Mach angle and Mach number

11 / 40

The local Mach number in a convergent-divergent nozzle increases as the flow ____________.

a. Accelerates

b. Decelerates

c. Remains constant

12 / 40

In subsonic flow, the velocity of the fluid is ____________ the speed of sound.

b. Equal to

c. Less than

a. Greater than

13 / 40

The Mach angle is the angle at which a ________ wave is inclined to the direction of motion.

c. Shock

b. Expansion

a. Compression

14 / 40

_________ flow occurs when the Mach number is greater than 1.

b. Subsonic

c. Transonic

a. Supersonic

15 / 40

The Mach cone is a conical shape formed by ____________.

b. Isentropic compression

a. Isentropic expansion

c. Local velocity vectors

16 / 40

The speed of sound in a gas is dependent on ____________.

a. Temperature only

b. Pressure only

c. Both temperature and pressure

17 / 40

The velocity of a flow is 500 m/s and the speed of sound is 300 m/s. What is the Mach number?

c. 1.5

b. 0.6

a. 1.67

18 / 40

Shock waves in supersonic flow result in a ____________.

a. Decrease in entropy

b. Increase in density

c. Irreversible change

19 / 40

For compressible flow, which equation governs the relationship between Mach number and velocity?

b. Euler's equation

c. Mach's equation

a. Bernoulli's equation

20 / 40

What is the speed of sound in a medium with a Mach number of 0.5?

a. Half the speed of sound

b. Equal to the speed of sound

c. Twice the speed of sound

21 / 40

A shock wave is a ____________.

a. Compression wave

c. Shear wave

b. Rarefaction wave

22 / 40

The critical Mach number for an airfoil is typically where ____________.

b. Drag reaches its maximum

a. Drag starts to decrease

c. Drag becomes zero

23 / 40

The Mach number is a dimensionless quantity representing the ratio of ____________.

b. Velocity to speed of sound

a. Velocity to speed of light

c. Velocity to viscosity

24 / 40

The presence of shock waves in a flow indicates ____________.

b. Subsonic flow

a. Smooth flow

c. Compressible flow

25 / 40

The velocity of sound in a medium depends on ____________.

a. Temperature

b. Density

c. Both temperature and pressure

26 / 40

What is the Mach number at which flow transitions from subsonic to supersonic?

b. 0.5

c. 2

a. 1

27 / 40

The Mach number for hypersonic flow is typically ____________.

b. Between 1 and 5

c. Greater than 5

a. Less than 1

28 / 40

The flow will choke when the Mach number at the throat reaches ___________.

a. 1

b. 0.5

c. 2

29 / 40

The ratio of the local velocity to the local speed of sound is known as the ___________.

a. Mach number

b. Reynolds number

c. Froude number

30 / 40

In compressible flow, which property remains constant along a streamline?

c. Mach number

b. Velocity

a. Density

31 / 40

The isentropic relation for compressible flow relates ____________.

c. Pressure and density

b. Density and temperature

a. Pressure and temperature

32 / 40

The flow will reach choked conditions when the Mach number is ____________.

a. Less than 1

b. Equal to 1

c. Greater than 1

33 / 40

The local Mach number at a point in a flowing fluid is dependent on ____________.

a. Pressure only

c. Both pressure and temperature

b. Density only

34 / 40

The Mach number of a flow is defined as the ratio of the flow velocity to the ____________.

a. Speed of light

b. Speed of sound

c. Speed of a fluid particle

35 / 40

The term "compressible flow" refers to flow in which ____________.

b. Volume remains constant

a. Density remains constant

c. Compressibility effects are significant

36 / 40

The presence of shocks in supersonic flow leads to ____________.

b. Increase in pressure

a. Decrease in temperature

c. Irreversible flow phenomena

37 / 40

A convergent-divergent nozzle is typically used for ____________ flow.

b. Subsonic

c. Transonic

a. Supersonic

38 / 40

The Mach number for incompressible flow is __________.

a. Less than 1

b. Equal to 1

c. Greater than 1

39 / 40

A shock wave creates a sudden ____________ in pressure.

c. Stability

b. Decrease

a. Increase

40 / 40

Shock waves occur in ____________ flow.

b. Subsonic

c. Transonic

a. Supersonic

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AdminMarch 28, 2024

0 7 1 minute read

Compressible Flow MCQs with Answers

Compressible Flow Online Quiz

Download Certificate of Quiz Compressible Flow

Download Compressible Flow MCQs with Answers Free PDF

Admin

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Compressible Flow Online Quiz

Download Certificate of Quiz Compressible Flow

Download Compressible Flow MCQs with Answers Free PDF

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