Question

An engine operates on the air standard diesel cycle. The conditions at
the start of the compression stroke are 353 K and 100 kPa, while at the
end of compression stroke the pressure is 4 MPa. The energy absorbed
is 700 kJ/kg of air. Calculate (1) the compression ratio (2) the cut-off
ratio (3) the work done per kg air (4) the thermal efficiency.

Answer 1

Answer:

I can't tell the answer I forget