Consider an air$-$standard Diesel cycle. Operating data at principal states in the cycle are given in the table below. Determine

a$.$ the cutoff ratio.

b$.$ the heat addition per unit mass, in $k\frac{J}{k}g.$

c$.$ the net work per unit mass, in $k\frac{J}{k}g.$

d$.$ the thermal efficiency.

$\backslash$table$[[$State$,T(K),p(kPa),u(k\frac{J}{k}g),h(k\frac{J}{k}g)$