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 Dependent on NRe only 120.36 2.36 4.36 Dependent on NRe only 120.36 2.36 4.36 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fouling factor None of these Accounts for additional resistances to heat flow Is a dimensionless quantity Does not provide a safety factor for design None of these Accounts for additional resistances to heat flow Is a dimensionless quantity Does not provide a safety factor for design ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A 10 cm dia steam pipe, carrying steam at 180°C, is covered with an insulation (conductivity = 0.6 W/m.°C). It losses heat to the surroundings at 30°C. Assume a heat transfer co-efficient of 0.8 W/m².°C for heat transfer from surface to the surroundings. Neglect wall resistance of the pipe and film resistance of steam. If the insulation thickness is 2 cms, the rate of heat loss from this insulated pipe will be Less than that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe Greater than that for uninsulated steam pipe Less than that of the uninsulated steam pipe Less than the steam pipe with 5 cms insulation Equal to that of the uninsulated steam pipe Greater than that for uninsulated steam pipe ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Kg of liquid evaporated per hour in an evaporator is defined as its None of these Capacity Economy Steam load None of these Capacity Economy Steam load ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Grashhoff number is given by gD³.β.Δtρ²/μ² gD³βΔtP²/μ gD2βΔtP²μ gD2βΔtρ/μ² gD³.β.Δtρ²/μ² gD³βΔtP²/μ gD2βΔtP²μ gD2βΔtρ/μ² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The Graetz number is concerned with the mass transfer between a gas and a liquid heat transfer in turbulent flow absorption with chemical reaction heat transfer in laminar flow mass transfer between a gas and a liquid heat transfer in turbulent flow absorption with chemical reaction heat transfer in laminar flow ANSWER DOWNLOAD EXAMIANS APP
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