The unit of heat transfer co-efficient in SI unit is

Q.

The unit of heat transfer co-efficient in SI unit is

A. J/m²°K

B. W/m²°K

C. W/m°K

D. J/m°K

Answer & Explanation

Answer : Option: B

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Q.

Which of the following has the lowest Prandtl number ?

A. Molten sodium (a coolant used in fast breeder reactor)

B. Water

C. Transformer oil

D. Dilute H2SO4

Answer & Explanation

Q.

At Pr >1, conduction in an ordinary fluid flowing through a heated pipe is limited to the

A. buffer zone

B. turbulent core

C. both (a) and (b)

D. viscous sub-layer

Answer & Explanation

Q.

Heat transfer co-efficient (h1) for liquids increases with

A. increasing temperature

B. decreasing temperature

C. decreasing Reynolds number

D. none of these

Answer & Explanation

Q.

h.D/K is called the _______ number.

A. Nusselt

B. Peclet

C. Rayleigh

D. Grashoff

Answer & Explanation

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The unit of heat transfer co-efficient in SI unit is

Q. The unit of heat transfer co-efficient in SI unit is

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More Questions Heat and Mass Transfer:

Q. Which of the following has the lowest Prandtl number ?

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Q.

The unit of heat transfer co-efficient in SI unit is

Q.

Which of the following has the lowest Prandtl number ?

Q.

At Pr >1, conduction in an ordinary fluid flowing through a heated pipe is limited to the

Q.

Heat transfer co-efficient (h1) for liquids increases with

Q.

h.D/K is called the _______ number.