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Steam Flow Quiz

Authored by Immanual R

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University

Used 1+ times

Steam Flow Quiz
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20 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of a convergent-divergent nozzle in steam flow applications?

To reduce the velocity of steam

To increase the pressure of steam

To accelerate steam to supersonic velocities

To maintain constant temperature of steam

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The critical pressure ratio for steam flow through nozzles is defined as:

The ratio of inlet pressure to exit pressure at which sonic velocity occurs at the throat

The ratio of exit pressure to inlet pressure at which sonic velocity occurs at the throat

The ratio of throat pressure to inlet pressure at which sonic velocity occurs at the throat

The ratio of inlet pressure to throat pressure at which sonic velocity occurs at the throat

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

For steam with a specific heat ratio (γ) of 1.3, the critical pressure ratio is approximately:

0.546

0.454

0.577

0.633

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When the actual pressure ratio exceeds the critical pressure ratio in a steam nozzle:

The flow becomes choked and the mass flow rate cannot increase further

The nozzle efficiency increases significantly

The steam temperature increases at the exit

Condensation occurs immediately

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a convergent-divergent nozzle, the divergent section is designed to:

Reduce the steam velocity to subsonic

Further accelerate the steam to supersonic velocities

Maintain constant velocity

Increase the pressure of steam

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The effect of friction in steam nozzles results in:

Higher exit velocity and lower mass flow rate

Lower exit velocity and higher mass flow rate

Lower exit velocity and lower mass flow rate

Higher exit velocity and higher mass flow rate

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Supersaturated flow in steam nozzles occurs when:

Steam expands so rapidly that condensation cannot occur despite crossing the saturation line

Steam temperature increases beyond saturation temperature

Steam pressure exceeds the critical pressure

Steam velocity reaches twice the speed of sound

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