# Steam Turbines Questions and Answers – Parsons Number and Quality Factor

This set of Steam and Gas Turbines Multiple Choice Questions & Answers (MCQs) focuses on “Parsons Number and Quality Factor”.

1. Vapor quality is the ___________ stored in the steam.
a) mass factor
b) pressure factor
c) temperature factor
d) none of the mentioned

Explanation: Vapor quality is used to know the amount of mass stored in steam.

2. Saturated liquid’s vapor quality is ________
a) 100%
b) 50%
c) 0%
d) 60%

Explanation: In a saturated liquid no vapor is present and hence vapor quality of saturated liquid is 0%.

3. Vapor quality of saturated steam is ________
a) 100%
b) 50%
c) 0%
d) 60%

Explanation: In a saturated vapor the vapor quality is 100%.

4. Vapor quality is an ___________
a) extensive property
b) intensive property
c) extensive & intensive property
d) none of the mentioned

Explanation: Vapor quality is an intensive property.

5. Vapor quality cannot be used to distinguish thermodynamic state of the fluid from others.
a) True
b) False

Explanation: As vapor quality is an intensive property it can be used with the other intensive properties to distinguish the thermodynamic stage.
Note: Join free Sanfoundry classes at Telegram or Youtube

6. Vapor quality can be calculated by ____________ the total mass of the vapour present with mass of the fluid.
a) dividing
b) multiplying
d) none of the mentioned

Explanation: Vapor quality is obtained by dividing mass of the vapor present in fluid with the total mass of the fluid.

7. ________ quality steam contains low moisture percentage.
a) high
b) medium
c) low
d) none of the mentioned

Explanation: Low quality steam has high moisture percentage.

8. ________ quality steam causes corrosion.
a) high
b) low
c) medium
d) none of the mentioned

Explanation: As low quality steam contains high moisture percentage, it corrodes easily.

9. In steam whistles steam quality determines the ___________
a) velocity of sound
b) pressure
c) temperature
d) none of the mentioned

Explanation: Velocity of sound in steam whistles depends on steam quality as steam inertia depends on steam quality.

10. Specific volume of steam is ___________ to dryness faction at given temperature.
a) not related
b) indirectly proportional
c) directly proportional
d) none of the mentioned

Explanation: At given temperature specific volume of steam increases with an increase in dryness faction.

Sanfoundry Global Education & Learning Series – Steam and Gas Turbines.

To practice all areas of Steam and Gas Turbines, here is complete set of 1000+ Multiple Choice Questions and Answers.

If you find a mistake in question / option / answer, kindly take a screenshot and email to [email protected]