what is the significance of pressure angle in spur gear? What is meant by self

what is the significance of pressure angle in spur gear?
What is meant by self locking in worm and worm gear?

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what is the significance of pressure angle in spur gear? What is meant by self locking in worm and ..

Answer / rajkumar

Pressure angle is an important factor in design of spur
gear.If the pressure angle is high it results in a noisy
operation.
self locking means worm and worm gear gets locked to itself
preventing further power transmission.

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