For the following questions answer them individually
The Otto cycle thermal efficiency, with usual notation, is given as, where r is compression ratio and $$\gamma$$ is the adiabatic index
The centre of gravity of the volume of the liquid displaced by an immersed body is called
The ratio of actual measured head to head imparted to fluid vby impeller for a centrifugal pump is known as
The process used for relieveing the internal stresses previously set up in the metal and for increasing the machinability of steel, is
The process of making hollow casting of desired thickness by permanent mould without the use of cores is known as
