A four stroke engine working on Otto cycle has a volume of $0\mathrm{.}5$ m$3$

$,$ pressure $1$ bar and

temperature $270$C at the commencement of compression stroke. At the end of

compression stroke, the pressure is $10$ bar. For $200$ kJ of heat addition, determine i$)$

percentage clearance, ii$)$ air standard efficiency, iii$)$ mean effective pressure and ideal

power developed by the engine if the engine runs at $400$ rpm$.$