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Heat Transfer

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

Latent
Both B & C
Sensible
Super

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Heat Transfer
Steam is routed through the tube in case of a __________ evaporator.

Long tube vertical
Short tube vertical
Basket type
Horizontal tube

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Heat Transfer
Baffles are provided in heat exchangers to increase the

Heat transfer area
Fouling factor
Heat transfer co-efficient
Heat transfer rate

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Heat Transfer
In a heat exchanger with steam outside the tubes, a liquid gets heated to 45°C, when its flow velocity in the tubes is 2 m/s. If the flow velocity is reduced to 1 m/s, other things remaining the same, the temperature of the exit liquid will be

Less than 45°C
More than 45°C
Equal to 45°C
Initially decreases and remains constant thereafter

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Heat Transfer
The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature)

(ΔT)⁴
√(ΔT)
(ΔT)²
(ΔT)³

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Heat Transfer
Thermal diffusivity of a material

All of these
Has the unit m² /sec
Is the ratio of thermal conductivity to thermal capacity
Is defined as K/ρ . Cp

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MORE MCQ ON Heat Transfer

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