That Portion of the Incomplete Thread That Is Not Fully

question 102

Multiple Choice

That portion of the incomplete thread that is not fully formed at root or at crest and root, and is produced by the chamfer at the starting end of the thread forming tool.

• A) Vanish thread
• B) partial thread
• C) washout thread
• D) thread runout
• E) all of the above

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Definitions:

Governor Cut-out Pressure

The maximum pressure at which an air compressor governor stops the compressor from pumping air into the air storage tanks, typically in air brake systems.

Governor Cut-in Pressure

The specific air pressure level at which an air compressor’s governor allows the compressor to start building air pressure in a pneumatic system.

Tractor Spring Brake

A braking system used in heavy vehicles like tractor-trailers, which utilizes spring pressure for parking and emergency brake applications.

Service Braking

Refers to the primary braking system used for normal vehicle deceleration and stopping.