MCQ Questions and Answers on Heat and Mass Transfer

Q.

Which area is used in case of heat flow by conduction through a cylinder

A. Logarithmic mean area

B. Arithmetic mean area

C. Geometric mean area

D. None of these

Discuss

Answer : Option:- A

Explanation :

Logarithmic mean area

Q.

Radiosity is the total ......... flux leaving the surface.

A. Heat

B. Radiant

C. Molar

D. None of these

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

In specular reflection the angle of

A. Incident ≠ Reflection

B. Absorption = Transmittion

C. Incident = Reflection

D. Absorption ≠ Transmittion

Discuss

Answer : Option:- C

Explanation :

In specular reflection the angle of Incident is equal to angle of Reflection.

Q.

Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the

A. maximum resistance in the series

B. sum of all resistances

C. average of all resistances

D. minimum resistance presents in the series

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Emissive power is measured in

A. Watt/m²k⁴

B. Watt/m²

C. watt/m

D. Watt

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Heat flows from one body to other when they have

A. different heat contents

B. different specific heat

C. different atomic structure

D. different temperatures

Discuss

Answer : Option:- D

Explanation :

Heat transfer takes place only if two bodies have different temperature, and also in direction of higher temperature to lower temperature.

Q.

Old houses were often built with high ceilings in the rooms so that they would be cooler in the warmer months. This was to take advantage of

A. Convection

B. Conduction

C. Radiation

D. Insulation

Discuss

Answer : Option:- A

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Choose the correct equation

A. Nu = (Re) (Pr) (Gz)

B. Nu = (Re) (Pr) (St)

C. Nu = (Re)(Pr)

D. Nu = (Pr)(St)

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

Maximum heat transfer rate is obtained in ______ flow.

A. Laminar

B. Turbulent

C. Creeping

D. transition region

Discuss

Answer : Option:- B

Explanation :

Discuss here! No Explaination Available for These Question.

Q.

The Convective heat transfer coefficient in case of fluid flowing in the tubes is not affected by the tube length/diameter ratio, if the flow is in the ______ zone.

A. Laminar

B. Transition

C. Both 'a' & 'b'

D. Highly turbulent

Discuss

Answer : Option:- D

Explanation :

Discuss here! No Explaination Available for These Question.

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MCQ Questions and Answers on Heat and Mass Transfer

Q. Which area is used in case of heat flow by conduction through a cylinder

Q. Radiosity is the total ......... flux leaving the surface.

Q. In specular reflection the angle of

Q. Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the

Q. Emissive power is measured in

Q. Heat flows from one body to other when they have

Q. Old houses were often built with high ceilings in the rooms so that they would be cooler in the warmer months. This was to take advantage of

Q. Choose the correct equation

Q. Maximum heat transfer rate is obtained in ______ flow.

Q. The Convective heat transfer coefficient in case of fluid flowing in the tubes is not affected by the tube length/diameter ratio, if the flow is in the ______ zone.

Q.

Which area is used in case of heat flow by conduction through a cylinder

Q.

Radiosity is the total ......... flux leaving the surface.

Q.

In specular reflection the angle of

Q.

Overall thermal resistance for conductive heat transfer through a series of flat resistances is equal to the

Q.

Emissive power is measured in

Q.

Heat flows from one body to other when they have

Q.

Old houses were often built with high ceilings in the rooms so that they would be cooler in the warmer months. This was to take advantage of

Q.

Choose the correct equation

Q.

Maximum heat transfer rate is obtained in ______ flow.

Q.

The Convective heat transfer coefficient in case of fluid flowing in the tubes is not affected by the tube length/diameter ratio, if the flow is in the ______ zone.