Net operating profit ratio determines___

Q. An electric motor operates with an efficiency of $90$%. A pump operated by the motor has an efficiency of $80$%. The overall efficiency of the system is:

Q. For two cycles coupled in series, the topping cycle has an efficiency of $30$% and the bottoming cycle has an efficiency of $20$%. The overall combined cycle efficiency is

Q. For two cycles coupled in series, the topping (upper) cycle has an efficiency of 40% and the bottoming cycle has an efficiency of 25%. The overall combined cycle efficiency is _____%

Q. A turbine produces 6 MW of power at an overall efficiency of 85%. If mechanical friction losses are 150 kW and volumetric efficiency is 98%, then mechanical efficiency and hydraulic efficiency of the turbine, respectively are

Q. A steam power plant has the boiler efficiency of $92\text{\%}$, turbine efficiency (mechanical) of $94\text{\%}$, generator efficiency of $95\text{\%}$ and cycle efficiency of $44\text{\%}$. If $6\text{\%}$ of the generated power is used to run the auxiliaries, the overall plant efficiency is