Steam Boilers, Engines, Nozzles and Turbines
The function of a flywheel is

To keep the engine speed uniform at all load conditions
To prevent fluctuation of speed
To convert reciprocating motion of the piston into rotary motion
To convert rotary motion of the crankshaft into to and fro motion of the valve rod

ANSWER DOWNLOAD EXAMIANS APP

Steam Boilers, Engines, Nozzles and Turbines
In recuperative air preheaters, the heat is transferred

From heating an intermediate material and then heating the air from this material
Heat is transferred by bleeding some gases from furnace
By direct mixing
From a metal wall from one medium to another

ANSWER DOWNLOAD EXAMIANS APP