The resultant of two equal forces P making an angle ?, is given by

2 P sin ?/2

2 P cos ?/2

2 P tan ?/2

2 P cot ?/2

H = Hg / Hf

H=Hg x Hf

H=Hg + Hf

H=Hg - Hf

10 to 40 %

40 to 60 %

60 to 70 %

70 to 90 %

Decreases net output but increases thermal efficiency

Increases net output but decreases thermal efficiency

Decreases net output and thermal efficiency both

Increases net output and thermal efficiency both

Indicator diagram

Axial force diagram

Valve timing diagram

None of these