Engineering Questions with Answers - Multiple Choice Questions
Steam Turbines MCQ’s – Parsons Number and Quality Factor
1 - Question
Vapor quality is the ___________ stored in the steam.
a) mass factor
b) pressure factor
c) temperature factor
d) none of the mentioned
View Answer
Answer: a
Explanation: Vapor quality is used to know the amount of mass stored in steam.
2 - Question
Saturated liquid’s vapor quality is ________
a) 100%
b) 50%
c) 0%
d) 60%
View Answer
Answer: c
Explanation: In a saturated liquid no vapor is present and hence vapor quality of saturated liquid is 0%.
3 - Question
Vapor quality of saturated steam is ________
a) 100%
b) 50%
c) 0%
d) 60%
View Answer
Answer: a
Explanation: In a saturated vapor the vapor quality is 100%.
4 - Question
Vapor quality is an ___________
a) extensive property
b) intensive property
c) extensive & intensive property
d) none of the mentioned
View Answer
Answer: b
Explanation: Vapor quality is an intensive property.
5 - Question
Vapor quality cannot be used to distinguish thermodynamic state of the fluid from others.
a) True
b) False
View Answer
Answer: b
Explanation: As vapor quality is an intensive property it can be used with the other intensive properties to distinguish the thermodynamic stage.
6 - Question
Vapor quality can be calculated by ____________ the total mass of the vapour present with mass of the fluid.
a) dividing
b) multiplying
c) adding
d) none of the mentioned
View Answer
Answer: a
Explanation: Vapor quality is obtained by dividing mass of the vapor present in fluid with the total mass of the fluid.
7 - Question
_______ quality steam contains low moisture percentage.
a) high
b) medium
c) low
d) none of the mentioned
View Answer
Answer: c
Explanation: Low quality steam has high moisture percentage.
8 - Question
________ quality steam causes corrosion.
a) high
b) low
c) medium
d) none of the mentioned
View Answer
Answer: b
Explanation: As low quality steam contains high moisture percentage, it corrodes easily.
9 - Question
In steam whistles steam quality determines the ___________
a) velocity of sound
b) pressure
c) temperature
d) none of the mentioned
View Answer
Answer: a
Explanation: Velocity of sound in steam whistles depends on steam quality as steam inertia depends on steam quality.
10 - Question
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
View Answer
Answer: c
Explanation: At given temperature specific volume of steam increases with an increase in dryness faction.