Terms Starting with W Y and Z
Waste spark-A spark occurring during the exhaust stroke on computerized ignition systems.
Wattage-A measure of the total power of an electrical circuit, calculated by multiplying the voltage in the circuit times the amperage in the circuit.
Watt’s Law-Power equals amperage times voltage (P = I x E).
Wheel cylinder-A device used to convert hydraulic fluid pressure to mechanical force for vehicle brakes.
Wheel speed sensor-A sensor on each wheel used to monitor speed in an antilock braking system.
Wheel spindle-The short shaft on the front wheel upon which the wheel bearings ride and to which the wheel is attached.
Work-Work is defined as the result of a force applied to a mass, moved a certain distance. Work = Force x Distance.
Yoke-The Y-shaped metal device that is attached to the drive shaft.
Zener diode-A type of diode that requires a certain amount of voltage before it will conduct electricity. This voltage is used to control transistors in voltage regulators.
Zerk-A lubrication fitting where grease is applied to a steering joint with a grease gun.
Zirconia-A chemical used in various ceramics, often used as an abrasive.
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