engineering recuitment UPCL AE (E&M) 2021 Mock Test Thermodynamics First Law of Thermodynamics Steady Flow Energy Equation
A small steam whistle (perfectly insulated and doing no shaft work) causes an enthalpy drop of 1.25 kJ/kg. The kinetic energy of the steam at entry is negligible, the velocity of steam at exit is
1
20 m/s
2
40 m/s
3
30 m/s
4
50 m/s