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Two technicians are discussing engine valve timing. Technician A says that the optimum valve timing is found through experimentation using an engine dynamometer. Technician B says that duration is the distance that the valve is lifted off the valve seat. Who is right? A. Both A and B B. A only C. Neither A nor B D. B only

Respuesta :

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The answer is B. A only. The optimum valve timing is found through experimentation using an engine dynamometer. The timing of the opening and closing of the valves is called valve timing. So the use of dynamometer measures the power output of a machine that is why it can measure the optimum valve timing.

Answer:

A ONLY

Explanation:

A ONLY

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