In the single-cylinder, single acting, four-stroke gas engine, the total fluctuation of speed is not to exceed ±3 percent of the mean speed. What is the coefficient of fluctuation of speed?(a) 0.04(b) 0.03(c) 0.09(d) 0.06The question was posed to me by my college director while I was bunking the class.My question is from Flywheel in section Internal Combustion Engines of Automobile Engineering

In the single-cylinder, single acting, four-stroke gas engine, the tot

1.	In the single-cylinder, single acting, four-stroke gas engine, the total fluctuation of speed is not to exceed ±3 percent of the mean speed. What is the coefficient of fluctuation of speed?(a) 0.04(b) 0.03(c) 0.09(d) 0.06The question was posed to me by my college director while I was bunking the class.My question is from Flywheel in section Internal Combustion Engines of Automobile Engineering
Answer» The correct answer is (d) 0.06 Easy explanation: Since the total fluctuation of SPEED is not to EXCEED ±3 PERCENT of the mean speed, therefore ω1 – ω2 = 6% ω and coefficient of fluctuation of speed = Cs = (ω1 – ω2)/ω = 0.06.

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