Heat Transfer It is not preferable to use superheated steam in evaporators, because of its very low film co-efficient none of the listed here high temperature high pressure low film co-efficient none of the listed here high temperature high pressure ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a shell and tube type heat exchanger, the floating tube bundle heat arrangement is used Because of its low cost To prevent corrosion of the tube bundles In low range of temperature differences In high range of temperature differences Because of its low cost To prevent corrosion of the tube bundles In low range of temperature differences In high range of temperature differences ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer With increase in porosity, the thermal conductivity of a solid substance Increases May increase or decrease; depends on the solid Remains unchanged Decreases Increases May increase or decrease; depends on the solid Remains unchanged Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Grashoff number, which is defined as g . β(Ts - T∞) ρ². L³/μ², is proportional to the ratio of buoyancy force to __________ force. Viscous Inertial Elastic None of these Viscous Inertial Elastic None of these 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 more economical All of these Is easy to operate and maintain Occupies smaller space Is more economical All of these Is easy to operate and maintain ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T³ Q ∝ T⁴ Q ∝ T² None of these Q ∝ T³ Q ∝ T⁴ Q ∝ T² None of these ANSWER DOWNLOAD EXAMIANS APP
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