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Heat Transfer

Heat Transfer
For __________ Prandtl number values, the heat conduction will be negligible in the buffer zone.

Extremely low
No
High
Low

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Heat Transfer
Black liquor generated during paper manufacture is concentrated in a

multiple effect evaporators followed by a crystalliser
multiple effect evaporator
single effect evaporator followed by a crystalliser
single effect evaporator

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Heat Transfer
Prandtl number is the reciprocal of

Thermal diffusivity/Momentum diffusivity
Mass diffusivity x Momentum diffusivity
Thermal diffusivity x Momentum
Thermal diffusivity x Mass diffusivity

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Heat Transfer
Radiator of an automobile engine is a __________ type of heat exchanger.

Direct contact
Cross-current
Co-current
Counter-current

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Heat Transfer
The separation of liquid droplets from the vapor is done by a/an __________ , in the evaporators.

Vacuum pump
Entrainment separator
Steam ejector
Compressor

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Heat Transfer
Multiple effect evaporators are commonly used in the manufacture of P. Paper Q. Superphosphate R. Sugar S. Fats

P and Q
P and S
P and R
R and S

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