Consider the following statements regarding compounding in steam turbines:
1. In an impulse turbine, steam, the velocity decreases when the steam passes through the moving blades.
2. In the Curtis stage, the total enthalpy drop and hence pressure drop occur in the nozzles
3. The reaction turbine works on the principle of increase in the pressure to create a reaction force
1
1 and 2 only
2
2 and 3 only
3
2 only
4
3 only