HomeEngineeringFor infinite parallel planes having emis-sivities ε₁ & ε₂, the interchange factor for radiation from surface 1 to surface 2 is given by 849. For infinite parallel planes having emis-sivities ε₁ & ε₂, the interchange factor for radiation from surface 1 to surface 2 is given byBy Admin / September 6, 2025 A. (ε₁ + ε₂)/ε₁.ε₂ B. Ε₁.ε₂/(ε₁ + ε₂ – ε₁.ε₂) C. Ε₁.ε₂ D. Ε₁ + ε₂ ✅ The correct answer is option B.
1. A fire tube boiler is limited to a maximum steam pressure of about __________ kg/cm². Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin
2. Transformer cores are normally made from Leave a Comment / Basic Chemical Engineering MCQs, Chemical Engineering, Engineering / By Admin