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Heat Transfer

Heat Transfer
Removal of __________ heat is involved in the condensation of a vapor under saturated conditions.

Both B & C
Sensible
Latent
Super

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Heat Transfer
Convective heat transfer co-efficient in case of fluid flowing in tubes is not affected by the tube length/diameter ratio, if the flow is in the __________ zone.

laminar
highly turbulent
transition
None of the listed here

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Heat Transfer
Which of the following is the most widely used heat insulating material for pipelines carrying steam?

85% magnesia cement and glass wool
Tar dolomite bricks followed by asbestos
Cotton followed by aluminium foil
Fireclay refractory followed by aluminium sheet

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Heat Transfer
Rate of heat transfer by vaporisation from pools of water is affected by the

All of these
Viscosity of water
Nature of heating surface and distribution of bubbles
Surface tension of water

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Heat Transfer
The inside heat transfer co-efficient in case of turbulent flow of liquid in the tube side in a 1-2 shell and tube heat exchanger is increased by __________ times, when the number of tube passes is increased to 8.

40.4
20.8
20.4
40.8

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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
All of these
Multipass heat exchanger
Baffled heat exchanger

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MORE MCQ ON Heat Transfer

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