For the following questions answer them individually
Loss of energy per unit volume due to friction in case of flow through a pipe at length L and diameter D is expressed as
A heat engine receives 1000 kJ of heast and produces 600 kJ of work. The amount of hear rejected in kJ and the efficiency percentage of the engine, respectively will be
In case of S.I. engine to have high thermal efficiency of fuel air mixture ratio should be
For the same output, same speed and same compression ratio the thermal efficiency of a two stroke cycle petrol engine as compared to that for stroke cycle petrol engine is
