Heat Transfer MCQs

Increasing temperature of the vapour

Decreasing temperature of the vapour

Increasing viscosity of the film of condensate

Increasing temperature drop

Multipass fixed tube sheet

U-tube

Single pass fixed tube sheet

None of these

Supersaturated

Saturated

Wet

None of these

Arithmetic

Logarithmic

Geometric

Either A or C

Lewis relationship

Nusselt number

Kutateladze number

Froude number

Boiling point elevations

Temperature of the feed

Rate of heat transfer

Ratio of the weight of the thin liquor to thick liquor

When heat transfer area required is very high

When heat transfer area required is very low, i.e (100-200 ft²)

Because it occupies less floor area

Because it is less costly

D0.8

D-0.2

D-1

D-1.8

Boiling point

Dynamic viscosity

Kinematic viscosity

Density

Increases the heating area required

Reduces the economy

Both A and B

Decreases the heating area required