For the following questions answer them individually
Change in entropy during constant pressure process is given by the relation
(a) $$mC_p \log_e \frac{T_1}{T_2}$$
(b) $$mC_p \log_e \frac{T_2}{T_1}$$
(c) $$mC_v \log_e \frac{T_2}{T_1}$$
(d) $$m\frac{R}{J} \log_e \frac{T_2}{T_1}$$
When a system undergoes a process such that $$\int \frac{dQ}{T} = 0$$ and $$\triangle S > 0$$, the process is:
In a two-stage reciprocating air compossor, the suction and delivery pressure are 1 and 4 bar respectively. For maximum efficiency, the intercooler pressure is
