# Multiple-Choice Questions or Objective-Type Questions on Steam Nozzle [PDF Included]

In all the examinations, there must be multiple-choice questions. In this article, I will display some Multiple-Choice Questions on Steam Nozzle that will boost you in your coming examinations.

In the last section, there is a Quiz on Steam Nozzle. Appear for the test and fall in love with studying a lot of objective-type questions.

So now let’s start the objective-type questions or viva questions on Steam Nozzle.

## MCQ questions or Viva Questions on Steam Nozzle

• Heat energy of steam is converted into ______ energy in a steam nozzle.
1. Potential energy
2. Kinetice energy
3. Electric energy
4. None of these

Ans: (2)

• When the cross section of a nozzle decreases continuously from entrance to exit, it is called a ____.
1. Convergent nozzle
2. Divergent nozzle
3. Convergent-divergent nozzle
4. None of these

Ans: (1)

• When the cross section of a nozzle increases continuously from entrance to exit, it is called a ____.
1. Convergent nozzle
2. Divergent nozzle
3. Convergent-divergent nozzle
4. None of these

Ans: (2)

• When the cross section of a nozzle first decreases and then increases, it is called a ____.
1. Convergent nozzle
2. Divergent nozzle
3. Convergent-divergent nozzle
4. None of these

Ans: (3)

• The smallest section of the nozzle is known as ____.
1. Convergent portion
2. Divergent portion
3. Throat
4. Both (1) and (2)

Ans: (3)

• Steam enters the nozzle with ____ pressure and ____ velocity.
1. Low,high
2. Low,low
3. High,high
4. High,low

Ans: (4)

• Steam leaves the nozzle with ____ pressure and ____ velocity.
1. Low,high
2. Low,low
3. High,high
4. High,low

Ans: (1)

• The back pressure of nozzle is ____.
1. The pressure at which steam enters the nozzle
2. The pressure at throat
3. The pressure at which steam leaves the nozzle
4. None of these

Ans: (3)

• Nozzle efficiency is the ratio of ____.
1. Isentropic heat drop and useful heat drop
2. Useful heat drop and isentropic heat drop
3. None of these

Ans: (2)

• How does the friction in a nozzle effects the dryness fraction of steam?
1. It does not effect
2. Friction decreases the dryness fraction
3. Friction increases the dryness fraction
4. None of these

Ans: (3)

• The exit velocity of steam in the nozzle (V) is ____(where k is nozzle coefficient and hd – enthalpy drop during expansion)
1. 72.44(K-hd)
2. 44.72 sqrt(Khd)
3. 72.44(K+hd)
4. 44.72 sqrt(K/hd)

Ans: (2)

• On which of the following parameters, the discharge in a convergant-divergant nozzle depends upon?
1. The area of the nozzle at throat
2. Initial conditions of the steam
3. Exit conditions of the steam
4. Both (1) and (2)

Ans: (4)

• When the steam is initially dry saturated, the critical pressure ratio is ____.
1. 1.135
2. 1.582
3. 0.577
4. 0.135

Ans: (3)

• When the steam is initially superheated, which value you will choose for the critical pressure ratio?
1. 0.577
2. 0.546
3. 0.582
4. 0.528

Ans: (2)

• For initially wet steam, which value will you choose for critical pressure ratio?
1. 0.577
2. 0.546
3. 0.582
4. 0.528

Ans: (3)

• For gases, which value will you choose for critical pressure ratio?
1. 0.577
2. 0.546
3. 0.582
4. 0.528

Ans: (4)

• For initially dry saturated steam, which is the right formula?
1. Mmax= 0.637A sqrt(p1/v1)
2. Mmax= 0.666A sqrt(p1/v1)
3. Mmax= 0.685A sqrt(p1/v1)
4. Mmax= 0.582A sqrt(p1/v1)

Ans: (1)

• For initially superheated steam, which is the right formula?
1. Mmax= 0.637A sqrt(p1/v1)
2. Mmax= 0.666A sqrt(p1/v1)
3. Mmax= 0.685A sqrt(p1/v1)
4. Mmax= 0.582A sqrt(p1/v1)

Ans: (2)

• For initially dry saturated steam, which is the right formula?
1. Mmax= 0.637A sqrt(p1/v1)
2. Mmax= 0.666A sqrt(p1/v1)
3. Mmax= 0.685A sqrt(p1/v1)
4. Mmax= 0.582A sqrt(p1/v1)

Ans: (1)

• For gases, which is the right formula?
1. Mmax= 0.637A sqrt(p1/v1)
2. Mmax= 0.666A sqrt(p1/v1)
3. Mmax= 0.685A sqrt(p1/v1)
4. Mmax= 0.582A sqrt(p1/v1)

Ans: (3)

## Quiz on Steam Nozzle

Here is the Quiz for you.

3
Created on

Quiz on Steam Nozzle

1 / 11

When will you use the divergent nozzle?

2 / 11

In, supersonic flow,

3 / 11

At subsonic speed,

4 / 11

The smallest section of the nozzle is ____.

5 / 11

The purpose of using a steam nozzle is to ____.

6 / 11

Normally, nozzle discharge coefficient value is

7 / 11

The critical pressure ratio of gases is ____.

8 / 11

If the critical pressure ratio is 0.546, the condition of steam is ____.

9 / 11

If the critical pressure ratio is 0.582, the condition of steam is ____.

10 / 11

When the critical pressure ratio is 0.577, the steam is ____.

11 / 11

In which portion of the steam nozzle, the flow is supersonic?

The average score is 66%

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## Conclusion

I hope that the Multiple-Choice Questions on Steam Nozzle will help you in your college/university examinations and different types of competitive examinations. I will be more encouraged if I get feedback from your end. Please don’t forget to give the feedback by writing in the comment box. Good Luck!

Tiulip

I love to educate myself. When I educate the little ones, I can educate myself in a better way. So I choose to educate all students with the help of advanced technology and that is by opening a site. Though by profession I am working in an MNC as a Mechanical Engineer, I love to educate from the beginning to build a career as a student.

## 2 thoughts on “Multiple-Choice Questions or Objective-Type Questions on Steam Nozzle [PDF Included]”

1. Asmit patel says:

Very nice mcq question

1. Tiulip says:

Thank you so much!!