Heat Transfer Grashhoff number is given by gD2βΔtP²μ gD³βΔtP²/μ gD³.β.Δtρ²/μ² gD2βΔtρ/μ² gD2βΔtP²μ gD³βΔtP²/μ gD³.β.Δtρ²/μ² gD2βΔtρ/μ² ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body cools down from 75°C to 70°C in 10 minutes. It will cool down from 70° C to 65° C in __________ minutes. >10 Either B or C, depends on the mass of the body 10 >10 Either B or C, depends on the mass of the body 10 ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Prandtl number is the reciprocal of Thermal diffusivity x Mass diffusivity Thermal diffusivity/Momentum diffusivity Mass diffusivity x Momentum diffusivity Thermal diffusivity x Momentum Thermal diffusivity x Mass diffusivity Thermal diffusivity/Momentum diffusivity Mass diffusivity x Momentum diffusivity Thermal diffusivity x Momentum ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer A body is called grey if the monochromatic emissivity of the body is Different for all wavelengths Unity Zero Same for all wavelengths Different for all wavelengths Unity Zero Same for all wavelengths ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The energy radiated from a surface Q at absolute temperature T is related as Q ∝ T⁴ None of these Q ∝ T² Q ∝ T³ Q ∝ T⁴ None of these Q ∝ T² Q ∝ T³ ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Steam trap is used to Condense the steam flowing in the pipeline Stop the supply of steam Remove water resulting from partial condensation of steam None of these Condense the steam flowing in the pipeline Stop the supply of steam Remove water resulting from partial condensation of steam None of these ANSWER DOWNLOAD EXAMIANS APP
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