Test: Bubble Growth

Question 1

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by

Accepted Answer

Fritz

Answer

Stanton

Answer

Fourier

Answer

Nusselt

Question 2

The nucleate pool boiling is influenced by the following factors
(i) Pressure
(ii) Liquid properties
(iii) Material
Identify the correct statements

Accepted Answer

1, 2 and 3

Answer

2 only

Answer

1 and 2

Answer

2 and 3

Question 3

Consider the following phenomena
(i) Boiling
(ii) Free convection in air
(iii) Forced convection in air
(iv) Conduction in air
Identify the correct sequence (heat transfer coefficient)

Accepted Answer

4 – 2 – 3 – 1

Answer

3 – 4 – 1 – 2

Answer

4 – 1 – 3 – 2

Answer

4 – 3 – 2 – 1

Question 4

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by Fritz and is given by

Where, β is the angle of contact

Accepted Answer

C _dβ [2 σ/g (p _t– p _v)] ^1/2

Answer

C _dβ [2 σ/g (p _t– p _v)].

Answer

C _dβ [2 σ/g (p _t– p _v)] ^3/2

Answer

C _dβ [2 σ/g (p _t– p _v)] ^5/2

Question 5

In spite of large heat transfer coefficient in boiling liquids, fins are used advantageously when the entire surface is exposed to

Accepted Answer

All modes of boiling

Answer

Film boiling

Answer

Transition boiling

Answer

Nucleate boiling

Question 6

With increase in excess temperature, the heat flux in boiling

Accepted Answer

Increases, then decreases and again increases

Answer

Increases continuously

Answer

Decreases and then increases

Answer

Decreases, then increases and again decreases

Question 7

The excess temperature range 50 degree Celsius < d t < 200 degree Celsius is indicative of the region of

Accepted Answer

Partial film boiling

Answer

Interface evaporation

Answer

Nuclear boiling

Answer

Stable film boiling

Question 8

Heat flux increases with temperature excess beyond the Leiden-frost point due to

Accepted Answer

Radiation effect becomes predominant

Answer

Occurrence of subcooled boiling

Answer

Vapor space become large

Answer

Promotion of nucleate boiling

Question 9

Leiden-frost expansion is related to

Accepted Answer

Boiling of liquid on a hot surface

Answer

Condensation of vapor on a cold surface

Answer

Exchange of heat between two solids

Answer

Evaporation of a solution

Question 10

Consider the following statements regarding nucleate boiling
(i) The temperature of the surface is greater than the saturation temperature of the liquid
(ii) Bubbles are created by the expansion of entrapped gas oil vapor at small cavities in the surface
(iii) The temperature is greater than that in film boiling
(iv) The heat transfer from the surface to the liquid is greater than that in the film boiling
Which of these statements are correct?

Accepted Answer

1, 2 and 4

Answer

1 and 3

Answer

2, 3 and 4

Answer

1, 2 and 3

Bubble Growth - Free MCQ Practice Test with solutions, GATE ME Heat Transfer

MCQ Practice Test & Solutions: Test: Bubble Growth (10 Questions)

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by

The nucleate pool boiling is influenced by the following factors
(i) Pressure
(ii) Liquid properties
(iii) Material
Identify the correct statements

Consider the following phenomena
(i) Boiling
(ii) Free convection in air
(iii) Forced convection in air
(iv) Conduction in air
Identify the correct sequence (heat transfer coefficient)

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by Fritz and is given by
Where, β is the angle of contact

In spite of large heat transfer coefficient in boiling liquids, fins are used advantageously when the entire surface is exposed to

With increase in excess temperature, the heat flux in boiling

The excess temperature range 50 degree Celsius < d t < 200 degree Celsius is indicative of the region of

Heat flux increases with temperature excess beyond the Leiden-frost point due to

Leiden-frost expansion is related to

Heat Transfer

Heat Transfer

Top Courses for Mechanical Engineering

About this Mechanical Engineering Practice Test

Explore more Mechanical Engineering Study Resources

Bubble Growth - Free MCQ Practice Test with solutions, GATE ME Heat Transfer

MCQ Practice Test & Solutions: Test: Bubble Growth (10 Questions)

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by

The nucleate pool boiling is influenced by the following factors (i) Pressure (ii) Liquid properties (iii) Material Identify the correct statements

Consider the following phenomena (i) Boiling (ii) Free convection in air (iii) Forced convection in air (iv) Conduction in air Identify the correct sequence (heat transfer coefficient)

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by Fritz and is given byWhere, β is the angle of contact

In spite of large heat transfer coefficient in boiling liquids, fins are used advantageously when the entire surface is exposed to

With increase in excess temperature, the heat flux in boiling

The excess temperature range 50 degree Celsius < d t < 200 degree Celsius is indicative of the region of

Heat flux increases with temperature excess beyond the Leiden-frost point due to

Leiden-frost expansion is related to

Heat Transfer

Heat Transfer

Top Courses for Mechanical Engineering

About this Mechanical Engineering Practice Test

Explore more Mechanical Engineering Study Resources

The nucleate pool boiling is influenced by the following factors
(i) Pressure
(ii) Liquid properties
(iii) Material
Identify the correct statements

Consider the following phenomena
(i) Boiling
(ii) Free convection in air
(iii) Forced convection in air
(iv) Conduction in air
Identify the correct sequence (heat transfer coefficient)

The bubble diameter at the time of detachment from the surface can be worked out from the relation proposed by Fritz and is given by
Where, β is the angle of contact