Refrigeration and Air Conditioning An infinite parallel planes with emissivities e₁ and e₂, the interchange factor for radiation from surface 1 to surface 2 is given by 1/e₁ + 1/e₂ (e₁ + e₂)/ e₁ + e₂ - e₁e₂ e₁ + e₂ e₁e₂ 1/e₁ + 1/e₂ (e₁ + e₂)/ e₁ + e₂ - e₁e₂ e₁ + e₂ e₁e₂ ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The vapour compression refrigerator employs the following cycle Carnot Rankine Reversed Rankine Reversed Carnot Carnot Rankine Reversed Rankine Reversed Carnot ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Air refrigerator works on None of these Bell Coleman cycle Both (A) and (B) Reversed Carnot cycle None of these Bell Coleman cycle Both (A) and (B) Reversed Carnot cycle ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning A refrigerating system operating on reversed Brayton refrigeration cycle is used for maintaining 250 K. If the temperature at the end of constant pressure cooling is 300 K and rise in the temperature of air in the refrigerator is 50 K, then the net work of compression will be (assume air as working substance with Cp = 1 kJ/kg) 100 kJ/kg 25 kJ/kg 50 kJ/kg 125 kJ/kg 100 kJ/kg 25 kJ/kg 50 kJ/kg 125 kJ/kg ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning Highest pressure encountered in a refrigeration system should be Near critical pressure Much above critical pressure Much below critical pressure Critical pressure of refrigerant Near critical pressure Much above critical pressure Much below critical pressure Critical pressure of refrigerant ANSWER DOWNLOAD EXAMIANS APP
Refrigeration and Air Conditioning The undesirable property of a refrigerant is Non-explosive Non-toxic Non-flammable High boiling point Non-explosive Non-toxic Non-flammable High boiling point ANSWER DOWNLOAD EXAMIANS APP
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