Heat Transfer Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. 3 x l05 3 x l010 3 x l012 3 x l08 3 x l05 3 x l010 3 x l012 3 x l08 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Grashoff number, which is defined as g . β(Ts - T∞) ρ². L³/μ², is proportional to the ratio of buoyancy force to __________ force. Inertial Viscous Elastic None of these Inertial Viscous Elastic None of these ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Hot water (0.01 m³ /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m³/min) of density 800 kg/m³ and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately 37 50 32 45 37 50 32 45 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Corrosiveness of steam condensate is due to the presence of Dissolved O₂ Both A & B CO₂ Neither A nor B Dissolved O₂ Both A & B CO₂ Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer If the baffle spacing in a shell and tube heat exchanger increases, then the Reynolds number of the shell side fluid Increases or decreases depending on number of shell passes Remains unchanged Decreases Increases Increases or decreases depending on number of shell passes Remains unchanged Decreases Increases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Kirchoff's law is applicable to Monochromatic radiation only Both A and B Only volumes and not to surfaces Total radiation only Monochromatic radiation only Both A and B Only volumes and not to surfaces Total radiation only ANSWER DOWNLOAD EXAMIANS APP
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