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A1Difficulty 3/5

Under comparable conditions, when a motorcycle’s cruising speed is increased between already high speeds, does fuel consumption usually rise?

Correct answer

Yes, it generally rises between already high cruising speeds.

Yes, it usually rises, especially because air resistance and the power needed to overcome it increase. The relationship is not identical at every speed: gear, engine speed, gradient, load and acceleration matter. At the same road speed, a higher gear normally lowers engine rpm; being a higher gear does not make rpm rise. Choose a suitable gear without labouring the engine, and do not treat fuel economy as permission to exceed limits.

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  • No, consumption is always independent of speed.

  • It can rise only if engine capacity exceeds 250 cm³.

  • Yes, it generally rises between already high cruising speeds.

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