Heat Transfer A diathermaneous substance __________ the thermal radiation completely. None of these Reflects Transmits Absorbs None of these Reflects Transmits Absorbs ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A composite wall consists of two plates A and B placed in series normal to the flow of heat. The thermal conductivities are kA and kB and the specific heat capacities are CPA and CPB for plates A and B respectively. Plate B has twice the thickness of plate A. At steady state, the temperature difference across plate A is greater than that across plate B, when CPA > CPB KA>2 kB CPA < CPB KA < 0.5kB CPA > CPB KA>2 kB CPA < CPB KA < 0.5kB ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A cube, sphere & a thin circular plate (all having same mass and made of same material) are all heated to 300°C and allowed to cool in natural air. Which one will cool the slowest ? Plate All of these Cube Sphere Plate All of these Cube Sphere ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam condensate is recovered by steam traps and recycled for use as boiler feed water, because of its low Hardness Dissolved soilds content Suspended solids content All of these Hardness Dissolved soilds content Suspended solids content All of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The outlet temperature of cooling water in a heat exchanger is generally not allowed to exceed above 50°C in industrial practice mainly to avoid Uneconomic LMTD Decrease in heat exchanger efficiency Excessive corrosion Its evaporation loss Uneconomic LMTD Decrease in heat exchanger efficiency Excessive corrosion Its evaporation loss ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Use of transverse baffles in a shell and tube heat exchanger is done to increase the Turbulence of shell side fluid Rate of heat transfer All of these Flow velocity Turbulence of shell side fluid Rate of heat transfer All of these Flow velocity ANSWER DOWNLOAD EXAMIANS APP
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