Question 1
Marks : +2 | -2
Pass Ratio : 20%
What is the energy balance of a closed system?
Explanation: For closed system energy balance, matter in the system is constant.
Question 5
Marks : +2 | -2
Pass Ratio : 20%
The specific volume of a gas is 2 m3/Kg, at 12 Pa, H = 30 J/Kg and at 15 Pa, H = 45 J/Kg, what is the heat transferred to the system?
Explanation: Q = ∆H – V∆P = (45 – 30) – 2(15 – 12) = 15 – 6 = 9 J/Kg.