Question
Consider the surface roughness profile as shown in the figure.
The center line average roughness (Ra, in µm) of the measured length (L) is
Options :
2
0
4
1
Answer :
Solution :
R a = a 1 + a 2 + b 1 + b 2 4
R a = 1 + 1 + 1 + 1 4
∴ Ra = 1
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