Parasitic loss is an unnecessary load on the engine that decreases __________.

Parasitic loss is an unnecessary load on the engine that decreases __________.

• A. Fuel economy
• B. Vehicle speed
• C. Governor pressure
• D. Modulator pressure

Answer: (A)

Parasitic loss is energy wasted by the engine on accessory systems that don’t move the vehicle. When the engine has to drive components like the alternator, water pump, oil pump, cooling fan, and power steering, some of its power is spent on these loads instead of producing forward thrust. That extra, unnecessary load makes fuel burn per kilometre (or mile) higher, so fuel economy decreases. This effect isn’t a direct change in vehicle speed, nor does parasitic loss directly alter governor pressure or modulator pressure, which are unrelated hydraulic control parameters. So the option describing fuel economy best fits what parasitic loss does.

Parasitic loss is energy wasted by the engine on accessory systems that don’t move the vehicle. When the engine has to drive components like the alternator, water pump, oil pump, cooling fan, and power steering, some of its power is spent on these loads instead of producing forward thrust. That extra, unnecessary load makes fuel burn per kilometre (or mile) higher, so fuel economy decreases. This effect isn’t a direct change in vehicle speed, nor does parasitic loss directly alter governor pressure or modulator pressure, which are unrelated hydraulic control parameters. So the option describing fuel economy best fits what parasitic loss does.