How the normal pitch (PN) and axial pitch (PC) related to a helical ge – McqOptions

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1.	How the normal pitch (PN) and axial pitch (PC) related to a helical gear with helix angle α?
A.	PC = PN.cos α
B.	PC = PN / cos α
C.	PN = PC.sin α
D.	PN = PC / sin α
Answer» C. PN = PC.sin α

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