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Heat Transfer

Heat Transfer
In the free convection regime of pool boiling, the heat flux is proportional to

Δt2
Δt5/4
Δt
Δt1/2

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Heat Transfer
In a multipass shell and tube heat exchanger, tube side return pressure loss is equal to __________ the velocity head

four times
none of the listed here
twice
square root of

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Heat Transfer
A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when

KA>2 kB
CPA > CPB
KA < 0.5kB
CPA < CPB

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Heat Transfer
Heat transfer by __________ may not necessarily require the presence of a medium

natural convection
radiation
coduction
none of the listed here

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Heat Transfer
Graetz number is given by

kL/mCp
mCp/kμ
kμ/mCp
mCp/kL

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Heat Transfer
LMTD can't be used as such without a correction factor for the

Condensation of mixed vapour in a condenser
Baffled heat exchanger
Multipass heat exchanger
All of these

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MORE MCQ ON Heat Transfer

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