Heat Transfer Unsteady state heat conduction occurs, when Three dimensional heat flow is concerned Temperature distribution is dependent on time Temperature distribution is independent of time Heat flows in one direction only Three dimensional heat flow is concerned Temperature distribution is dependent on time Temperature distribution is independent of time Heat flows in one direction only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer In regenerative air preheater (as practised in heating of coke ovens), the heat is transferred By direct contact of hot flue gas with air None of these By heating an intermediate material (like chequor bricks) and then heating the air from this hot material Through a metallic wall By direct contact of hot flue gas with air None of these By heating an intermediate material (like chequor bricks) and then heating the air from this hot material Through a metallic wall ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer The equivalent diameter for pressure drop is __________ that for heat transfer greater than None of the listed here smaller than equal to greater than None of the listed here smaller than equal to 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 Remains unchanged Increases or decreases depending on number of shell passes Increases Decreases Remains unchanged Increases or decreases depending on number of shell passes Increases Decreases ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Kirchoff's law is applicable to Only volumes and not to surfaces Total radiation only Both A and B Monochromatic radiation only Only volumes and not to surfaces Total radiation only Both A and B Monochromatic radiation only ANSWER DOWNLOAD EXAMIANS APP
Heat Transfer Harmonic mean temperature difference is given by 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) √(ΔT₁ . ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) 2.(ΔT₁ . ΔT₂)/(ΔT₁ + ΔT₂) 2.(ΔT₁ . ΔT₂)(ΔT₁ - ΔT₂) √(ΔT₁ . ΔT₂) (ΔT₁ - ΔT₂)/(ΔT₁ . ΔT₂) ANSWER DOWNLOAD EXAMIANS APP
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