Which instrument measures the working speed of the engine, typically in rpm?

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Multiple Choice

Which instrument measures the working speed of the engine, typically in rpm?

Explanation:
Engine speed is measured in revolutions per minute, and the instrument that displays this is the tachometer. It shows how fast the engine is turning, helping you stay in the optimal RPM range for performance and fuel efficiency and to avoid over-revving that can cause damage. A gear indicator only shows which gear is engaged, a speedometer shows how fast the vehicle is moving, and an odometer records distance traveled. So the tachometer is the instrument that measures the engine’s working speed in rpm.

Engine speed is measured in revolutions per minute, and the instrument that displays this is the tachometer. It shows how fast the engine is turning, helping you stay in the optimal RPM range for performance and fuel efficiency and to avoid over-revving that can cause damage. A gear indicator only shows which gear is engaged, a speedometer shows how fast the vehicle is moving, and an odometer records distance traveled. So the tachometer is the instrument that measures the engine’s working speed in rpm.

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