For an ideal black body

Q.

For an ideal black body

A. Absorptivity =1

B. Reflectivity =1

C. Emissivity = 0

D. Transmitivity =1

Answer & Explanation

Ideal black body absorb all incident light, therefore absorptivity is equal to 1.

Thus correct option is: A.

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Q.

Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is

A. 0.72

B. 4.364

C. 18

D. 83

Answer & Explanation

Q.

Which of the following is concerned with both heat and mass transfer

A. Lewis relationship

B. Nusselt number

C. Kutateladze number

D. Froude number

Answer & Explanation

Q.

Radiation shape factor is also known as

A. View factor

B. Friction factor

C. Angle factor

D. None of these

Answer & Explanation

Q.

According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor)

A. 2f

B. f

C. f/2

D. f/4

Answer & Explanation

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For an ideal black body

Q. For an ideal black body

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More Questions Heat and Mass Transfer:

Q. Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is

Q. Which of the following is concerned with both heat and mass transfer

Q. Radiation shape factor is also known as

Q. According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor)

Q.

For an ideal black body

Q.

Nusselt number for full developed, laminar, constant property flow in a pipe at uniform heat flux is

Q.

Which of the following is concerned with both heat and mass transfer

Q.

Radiation shape factor is also known as

Q.

According to Reynolds analogy, Stanton number is equal to (where, f = Fanning friction factor)