What is the purpose of calculation of specific output of an engine?

What is the purpose of calculation of specific output of an engine? Correct Answer Engine performance

Specific output is a measure of engine performance. It is the power produced by the engine per unit of piston displacement. It is measured in the units of horsepower/m3 or horsepower/litre or Kilowatts/m3.

Related Questions

What is the output after compile and run the following code ? int Output = 10;
boolean b = false;
if((b == true) && ((Output += 10) == 20))
{
System.out.println("We are equal " + Output);
}
else
{
System.out.println("Not equal! " + Output);
}