Heat Transfer Multipass heat exchangers are used To obtain higher heat transfer co-efficient and shorter tube To reduce the pressure drop Because of simplicity of fabrication For low heat load To obtain higher heat transfer co-efficient and shorter tube To reduce the pressure drop Because of simplicity of fabrication For low heat load ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of parallel flow heat exchanger, the lowest temperature theoretically attainable by the hot fluid is __________ the outlet temperature of the cold fluid. Less than Either more or less than (depending upon the fluid) Equal to More than Less than Either more or less than (depending upon the fluid) Equal to More than ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T⁴ Q ∝ T² None of these Q ∝ T³ Q ∝ T⁴ Q ∝ T² None of these Q ∝ T³ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Among liquids, water has a comparatively high value of thermal conductivity, due to its High viscosity Dense structure Low density Partial ionisation High viscosity Dense structure Low density Partial ionisation ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe, where the wall heat flux is constant, is 2.36 4.36 Dependent on NRe only 120.36 2.36 4.36 Dependent on NRe only 120.36 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Calburn analogy is applicable for the value of Prandtl number from 0.6 to 120 120 to 400 0.001 to 1 0.5 to 5 0.6 to 120 120 to 400 0.001 to 1 0.5 to 5 ANSWER DOWNLOAD EXAMIANS APP
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