Heat Transfer With increase in temperature, the thermal conductivity of a gas Remains same May increase or decrease depending on the type of gas Decreases Increases Remains same May increase or decrease depending on the type of gas Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Reason for operating an evaporator in multiple effect is to secure Increased steam economy Both A and B Decreased steam consumption Increased capacity Increased steam economy Both A and B Decreased steam consumption Increased capacity ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat flux is the time rate of heat transfer per unit area length volume none of the listed here area length volume none of the listed here ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat sensitive materials can be concentrated in an evaporator employing Vacuum High pressure None of these High residence time Vacuum High pressure None of these High residence time ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The heat transfer by radiation from a mild steel surface is to be reduced by reducing the emissivity of the surface. This can be best achieved by Painting the surface black Giving the surface a mirror finish Roughening the surface Painting the surface white (with aluminium paint) Painting the surface black Giving the surface a mirror finish Roughening the surface Painting the surface white (with aluminium paint) ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Three solid objects of the same material and of equal mass-a sphere, a cylinder (length = diameter) and a cube are at 500°C initially. These are dropped in a quenching bath containing a large volume of cooling oil each attaining the bath temperature eventually. The time required for 90% change in temperature is the smallest for Cylinder Cube Sphere Equal for all the three Cylinder Cube Sphere Equal for all the three ANSWER DOWNLOAD EXAMIANS APP
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