Steam Boilers, Engines, Nozzles and Turbines
In a reaction turbine, when steam flows through the moving blades,

Pressure increases while velocity decreases
Pressure and velocity both increases
Pressure decreases while velocity increases
Pressure and velocity both decreases

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
In designing air preheaters, the important design consideration is that

Heat transfer area should be optimum
Approach temperature should be as low as possible
Stack gases should not be cooled to the dew point
Handling and maintenance should be easier

ANSWER DOWNLOAD EXAMIANS APP