Heat Transfer Which of the following is the most widely used heat insulating material for pipelines carrying steam? 85% magnesia cement and glass wool Tar dolomite bricks followed by asbestos Cotton followed by aluminium foil Fireclay refractory followed by aluminium sheet 85% magnesia cement and glass wool Tar dolomite bricks followed by asbestos Cotton followed by aluminium foil Fireclay refractory followed by aluminium sheet ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The advantage of backward feed multiple effect evaporators over forward feed units is that Equal heat transfer co-efficients exist in various effects Most concentrated liquid is at highest temperature There is no additional cost of pumping Heat sensitive material can be handled Equal heat transfer co-efficients exist in various effects Most concentrated liquid is at highest temperature There is no additional cost of pumping Heat sensitive material can be handled ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer co-efficient (h1) for liquids increases with Decreasing Reynolds number Increasing temperature Decreasing temperature None of these Decreasing Reynolds number Increasing temperature Decreasing temperature None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is unimportant in forced convection ? none of the listed here Prandtl number Grashhoff number Reynolds number none of the listed here Prandtl number Grashhoff number Reynolds number ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer For large heat transfer area requirement, shell and tube heat exchanger is preferred, because it Occupies smaller space Is easy to operate and maintain Is more economical All of these Occupies smaller space Is easy to operate and maintain Is more economical All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following is not used as a medium for high temperature heating ? dowtherm liquid metal mercury None of the listed here dowtherm liquid metal mercury None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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