Heat Transfer The Nusselt number for fully developed (both thermally and hydrodynamically) laminar flow through a circular pipe whose surface temperature remains constant is 88.66 Dependent on NRe only 3.66 1.66 88.66 Dependent on NRe only 3.66 1.66 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In case of vertical tube evaporator, with increase in liquor level, the overall heat transfer co-efficient Increases Is not affected May increase or decrease; depends on the feed Decreases Increases Is not affected May increase or decrease; depends on the feed Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A process stream of dilute aqueous solution flowing at the rate of10 Kg.s⁻¹ is to be heated. Steam condensate at 95°C is available for heating purpose, also at a rate of 10 Kg.s⁻¹. A 1 - 1 shell and tube heat exchanger is available. The best arrangement is Counter flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on tube side Parallel flow with process stream on shell side Counter flow with process stream on shell side Counter flow with process stream on tube side Parallel flow with process stream on tube side Parallel flow with process stream on shell side ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam trap is used to None of these Condense the steam flowing in the pipeline Remove water resulting from partial condensation of steam Stop the supply of steam None of these Condense the steam flowing in the pipeline Remove water resulting from partial condensation of steam Stop the supply of steam ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A sphere of radius 'R₁' is enclosed in a sphere of radius 'R₂'. The view (or shape) factor for radiative heat transfer of the outer sphere with respect to the inner sphere is 1 R₂/(R₁+R₂) (R₁/R₂)2 1 R₂/(R₁+R₂) (R₁/R₂)2 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Thermal conductivity of a conducting solid material depends upon its both temperature & porosity None of the listed here porosity temperature both temperature & porosity None of the listed here porosity temperature ANSWER DOWNLOAD EXAMIANS APP
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