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Heat Transfer

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

0.72
4.364
83
18

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Heat Transfer
In a forward feed multiple effect evaporator unit

None of these
Viscosity of liquid is highest in first effect
No pump is required to withdraw the product from the last effect
Transfer from effect to effect is done by pumps

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Heat Transfer
LMTD correction factor which is to be applied for a cross-flow heat exchanger increases with increase in the number of shell passes. Its value for a single pass cross flow heat exchanger is

1
<1
>1
Zero

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Heat Transfer
The non-dimensional temperature gradient in a liquid at the wall of a pipe is the

Heat flux
Nusselt number
Prandtl number
Schmidt number

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Heat Transfer
Conductance is given by(where, x = thickness, A = heat flow area, K = thermal conductivity.)

A/Kx
KA/x
K/Ax
X/KA

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Heat Transfer
Prandtl and Reynold's analogies are identical for Prandtl number value of

0.5
1
5

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MORE MCQ ON Heat Transfer

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