ASE Brakes Terms & Definitions Practice Test

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Duty cycle
A mechanical or electricallydriven propeller that draws or pushes air through the radiator, condenser, heater core or evaporator core.
Air injection reaction system
Evaporative emission system.
A signal that varies the ratio of on-time to off-time, resulting in a square wave that can range between zero and 100; in a process, the ratio of on-time to total cycle time; in fuel injectors, the percentage on-time to total cycle time; in solenoids, the percentage of on-time to total cycle time.