The equivalent evaporation $$(kg/hr)$$ of a boiler producing $$2000$$ $$kg/hr$$ of steam with enthalpy content of $$2426$$ $$kJ/kg$$ from feed water at temperature $${40^ \circ }C$$ (liquid enthalpy $$=168$$ $$kJ/kg$$) is (Enthalpy of vaporization of water at $${100^0}C = 2258$$ $$kJ/kg$$).

Boiler rating is usually defined in terms of:

A steam turbine operating with less moisture is ____________ (more/less) efficient and ________ (less/more) prone to blade damage.

Subsonic and supersonic diffusers have the following geometry: