Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l08 3 x l05 3 x l010 3 x l012 3 x l08 3 x l05 3 x l010 3 x l012 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If a single tube pass heat exchanger is converted to two pass, then for the same flow rate, the pressure drop per unit length in tube side will Decrease by 22 Increase by 1.8 times Remain unchanged Increase by 216 Decrease by 22 Increase by 1.8 times Remain unchanged Increase by 216 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Fluid motion in the natural convection heat transfer between a solid surface and a fluid in contact with it, results from the Temperature gradient produced due to density difference Existence of thermal boundary layer Buoyancy of the bubbles produced at active nucleation site None of these Temperature gradient produced due to density difference Existence of thermal boundary layer Buoyancy of the bubbles produced at active nucleation site None of these ANSWER DOWNLOAD EXAMIANS APP
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 temperature follows __________ law. Hyperbolic Parabolic Linear Logarithmic Hyperbolic Parabolic Linear Logarithmic ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A perfect black body is a perfect __________ of radiation Both emitter & absorber none of the listed here emitter absorber Both emitter & absorber none of the listed here emitter absorber ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Heat transfer by conduction in the turbulent core of a fluid flowing through a heated pipe is negligible, if the value of Prandtl number is 0.8 0.4 0.2 0.6 0.8 0.4 0.2 0.6 ANSWER DOWNLOAD EXAMIANS APP
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