The air-standard cycle efficiency of the engine is

Question

The Stroke and bore of a four stroke spark ignition engine are 250mm and 200mm respectively. The clearance volume is 0.001m³. If the specific heat ratio g = 1.4, the air-standard cycle effiency of the engine is                                                                                                                                       

      (a) 46.40%                                                          (b) 56.10%

      (c) 58.20%                                                          (d) 62.80%