Engineering Thermodynamics MCQ on Compressible Fluid Flow

This is an MCQ-based quiz on the topic of Compressible Fluid Flow

This includes the following:-

Velocity of Pressure Pulse in a Fluid and Stagnation Properties
One Dimensional Steady Isentropic Flow and Choking
Normal Shocks

Start Quiz

The pressure wave velocity c is given by

1 / (dp/d(density)) sqrt(dp/d(density)) sqrt(d(density)/dp) (dp/d(density))

For an ideal gas, velocity of sound is given by

1/ɣ*R*T sqrt(1/ɣ*R*T) sqrt(ɣ/RT) sqrt(ɣ*R*T)

The reference temperature To and normal temperature T are related by

(To/T) = 1 + (V2)/(2*cp*T) (To/T) = 1 – (V2)/(2*cp*T) (To/T) = 1 + (V2)/(cp*T) (To/T) = 1 – (V2)/(cp*T)

The reference temperature To and normal temperature T can be related in terms of M by

(To/T) = 1 + (ɣ-1)*(M2) (To/T) = 1 + (ɣ-1)*(M2)/2 (To/T) = 1 – (ɣ-1)*(M2)/2 (To/T) = 1 – (ɣ-1)*(M2)

When Mach number, M>1 and flow area increases, then

Pressure decreases

Velocity increases

Both of the mentioned

None of the mentioned

For a supersonic flow,

A convergent passage becomes diffuser and a divergent passage becomes nozzle

A divergent passage becomes diffuser and a convergent passage becomes nozzle

Both of the mentioned

None of the mentioned

For a subsonic flow,

A convergent passage becomes diffuser and a divergent passage becomes nozzle

A divergent passage becomes diffuser and a convergent passage becomes nozzle

Both of the mentioned

None of the mentioned

The ____ section of a nozzle or diffuser is called throat.

Constant area

Maximum

Minimum

All of the mentioned

Which of the following produce continuous change in state of a flowing stream?

Wall friction

Changes in cross-sectional area

Energy effects

All of the mentioned

For the isentropic stagnation state,

It is a reference state

Designated with subscript zero

Both of the mentioned

None of the mentioned

Quiz/Test Summary

Title: Engineering Thermodynamics MCQ on Compressible Fluid Flow

Questions: 10

Contributed by:

NEO Tue, Apr 19, 2022 07:25 AM UTC

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