For the following questions answer them individually
A certain engine at full load delivers 80 kW. It requires 20 kW to rotate it without load. The mechanical efficiency at full load condition will be
For polytropic process $$pv^{n} = c$$ for a perfect gas, change in entropy is given by the expression
In a four-stroke cycle I.C. engine, the minimum temperature inside the engine cylinder occurs at the
The boiler accessory installed to recover heat from exhaust flue gas for feed water heating is called
