www.ThinkITI.com

Home
MCQ
Search
Free Apps
Important
Study Groups
Contact Us
Policy

Home
MCQ
Objective Questions
Engineering
Mechanical
ME Set-1
Steam Nozzles and Turbines
32

Steam Nozzles and Turbines MCQ with Answers

32) Which of the following statement is correct?

The expansion of steam in a nozzle follows Rankine cycle.

The friction in the nozzle increases the dryness fraction of steam.

The pressure of steam at throat is called critical pressure.

all of the above

Answer is:

all of the above

Steam Nozzles and Turbines MCQ with Answers

For more MCQ's Click Here

Related Steam Nozzles and Turbines MCQ with Answers

33) A binary vapour plant consists of

steam turbine

steam condenser

mercury boiler

all of these

Answer is:

all of these

Explanation:

A binary vapour plant consists of
* steam turbine
* steam condenser
* mercury boiler

34) In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p₂) will be

3.3 bar

5.46 bar

8.2 bar

9.9 bar

Answer is:

5.46 bar

35) The stage efficiency (?_S) is given by (where ?_B = Blading efficiency, and ?_N = Nozzle efficiency)

?_S = ?_B x ?_N

?_S = ?_B/?_N

?_S = ?_N/?_B

none of these

Answer is:

?_S = ?_B x ?_N

36) The critical pressure ratio for initially dry saturated steam is more as compared to initially wet steam.

Yes

Unknown

None

Answer is:

No

Steam Nozzles and Turbines MCQ with Answers

For more MCQ's Click Here

32) Which of the following statement is correct?

all of the above

Steam Nozzles and Turbines MCQ with Answers

Related Steam Nozzles and Turbines MCQ with Answers

33) A binary vapour plant consists of

all of these

34) In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p2) will be

5.46 bar

35) The stage efficiency (?S) is given by (where ?B = Blading efficiency, and ?N = Nozzle efficiency)

?S = ?B x ?N

36) The critical pressure ratio for initially dry saturated steam is more as compared to initially wet steam.

No

Steam Nozzles and Turbines MCQ with Answers

34) In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p₂) will be

35) The stage efficiency (?_S) is given by (where ?_B = Blading efficiency, and ?_N = Nozzle efficiency)

?_S = ?_B x ?_N