Heat Transfer If the thermal conductivity of a wall material is independent of temperature, the steady state temperature distribution in the very large thin plane wall having steady, uniform surface tempeature follows __________ law. Parabolic Linear Logarithmic Hyperbolic Parabolic Linear Logarithmic Hyperbolic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Which of the following has the minimum absorptivity? Aluminium foil Iron plates Coal dust Refractory bricks Aluminium foil Iron plates Coal dust Refractory bricks ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In a laboratory test run, the rate of drying was found to be 0.5 x 10-3 kg/m².s, when the moisture content reduced from 0.4 to 0.1 on dry basis. The critical moisture content of the material is 0.08 on a dry basis. A tray dryer is used to dry 100 kg (dry basis) of the same material under identical conditions. The surface area of the material is 0.04 m²/kg of dry solid. The time required (in seconds) to reduce the moisture content of the solids from 0.3 to 0.2 (dry basis) is 2000 5000 4000 6000 2000 5000 4000 6000 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Stefen's block body radiation law can also be derived from __________ law. Planck's Kirchoffs None of these Fourier's Planck's Kirchoffs None of these Fourier's ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A black body does not __________ radiation. Both B & C Refract Reflect Absorb or emit Both B & C Refract Reflect Absorb or emit ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Presence of a non-condensing gas in a condensing vapour decreases thermal resistance is desirable to increase the film co-efficient None of the listed here increases the rate of condensation decreases thermal resistance is desirable to increase the film co-efficient None of the listed here increases the rate of condensation ANSWER DOWNLOAD EXAMIANS APP
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