General Studies · IC Engines
Willans' line for a steam engine or internal combustion engine governed by throttle control follows a linear law relating steam/fuel consumption to power output. Which of the following equations correctly represents this law? Where: m = Steam or fuel consumption per hour I.P. = Indicated power a = Constant representing fuel/steam consumption at no load b = Constant representing the slope of the Willans' line
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1m = bI.P. - a
- 2I.P. = b × m + a
- 3m = a + b × I.P.✓
- 4I.P. = a × m + b
Correct answer
m = a + b × I.P.
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