1. (50P) The diameter and stroke of two stroke diesel engine are 52 cm and 210 cm respective The clearance volume is 25.3 dm3. The exhaust ports close after 45 crank angle from BDC. runs 125 rpm. The fuel valve opens at TDC and closes 30 crank angle after TDC. During trail run of the engine, the following observations were made: Atmospheric pressure 103 kPa Atmospheric temperature 350C Air supplied by blower = 6000 kg/hr Find; a) Effective compression ratio b) Cut-off ratio (beta), the air standard efficiency of the cycle based on effective compression ratio. c) If the relative efficiency is 60% find the specific fuel consumption assuming the C.V. of the fuel used is; 42000 kJ/kg. d) Total cycle compression ratio. (When piston at BDC) If the scavenging efficiency of the engine is 47.4%, Using total cycle compression ratio calculate the ; e) scavenging ratio, f) trapped efficiency, and g) charging efficient h) Based on your results, draw a P-V diagram of the two stroke diesel engine and explain the m, mtr, mcy.