Civil Engineering Mcqs


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  • A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m2.°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be__________________?
  • Sensible heat of hot industrial flue gases cannot be recovered by a/an________________?
  • The heat flux in the nucleate boiling regimes is proportional to (where, ΔT = excess temperature) ?
  • In a multiple effect evaporator, the effect of boiling point elevation is to______________________?
  • Film condensation is promoted on a/an _______________________ surface?

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