In a triple expansion compound steam engine, the steam is supplied at 12.5 bar. All the cylinders have restricted expansion and the cylinder volumes are in the ratio 1 : 2.5 : 6. If the overall...

In a triple expansion compound steam engine, the steam is supplied at 12.5 bar. All the cylinders have restricted expansion and the cylinder volumes are in the ratio 1 : 2.5 : 6. If the overall expansion ratio is 12.5, cut-off in the I.P. cylinder occurs at 50%, and cut-off in the L.P. cylinder occurs at 65% of the stroke, determine:

(a) The mean effective pressures of three cylinders

(b) Loss in power due to restricted expansion in the H.P. and I.P. cylinders

Assume hyperbolic expansion of steam and neglect clearance.