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Heat Transfer

Heat Transfer
__________ heat exchanger is used for chilling oil to be dewaxed.

Floating head
Double pipe
U-tube
Fixed tube

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Heat Transfer
Air is best heated with steam in a heat exchanger of

plate type
shell and tube type
double pipe type with fin on air side
double pipe type with fin on steam side

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Heat Transfer
Steam side heat transfer co-efficient in an evaporator is in the range of __________ kcal/hr.m²°C.

1000-1500
18537
100-500
5000-15000

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

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

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Heat Transfer
In natural convection heat transfer, the correlating parameter is the

Bond number
Eckert number
Grashoff number
Graetz number

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Heat Transfer
What is the absorptivity of a black body?

0.78
1
0.95

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MORE MCQ ON Heat Transfer

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