Which of the following statements are not true?

A Increasing pressure angle improves the tooth strength
B Contact duration is decreased with increase in pressure angle
C 20⁰ pressure angle has quieter operation then 14.5⁰
D All of the statements are true

Correct Answer: 20⁰ pressure angle has quieter operation then 14.5⁰

Lower the pressure angle, quieter is the operation. Lower the pressure angle, lower is the breadth of the tooth at root.
Bissoy MCQ
#Machine Design #System of Gear Tooth

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