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Heat Transfer

Heat Transfer
Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second.

3 x l05
3 x l010
3 x l08
3 x l012

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Heat Transfer
For a fluid flowing in an annulus space, the wetted perimeter for heat transfer and pressure drop are

Same
Different
Linearly related
Never different

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Heat Transfer
Rate of crystallisation does not depend upon the

None of these
Turbulence within the solution
Number and active surface area of the crystals
Extent of supersaturation

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Heat Transfer
For the same heat load and mass flow rate in the tube side of a shell and tube heat exchanger, one may use multipass on the tube side, because it

None of these
Decreases the pressure drop
Decreases the outlet temperature of cooling medium
Increases the overall heat transfer coefficient

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Heat Transfer
Crystallisation of solids from a homogeneous solution is a/an __________ process.

None of these
Exothermic
Mildly endothermic
Highly endothermic

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Heat Transfer
An equipment which converts the latent or sensible heat of one fluid into the latent heat of vaporisation of another, is called a

recuperator
boiler
heat exchanger
regenerator

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