engineering recuitment AAI JE Technical Mock Test 2020-21 Thermodynamics Thermodynamic Relations Entropy Equations (Tds Equations)
Which among the following is the correct expression for differential change in enthalpy and internal energy?
1
\(dh = {C_p}dT - \;T{\left( {\frac{{\partial v}}{{\partial T}}} \right)_p} - v \;dp\)
2
\(dh = {C_v}dT - \;T{\left( {\frac{{\partial p}}{{\partial T}}} \right)_v} - p\;dp\)
3
\(du = {C_v}dT + \;T{\left( {\frac{{\partial p}}{{\partial T}}} \right)_v}dv - p\;dv \)
4
Both 1 and 3