Answer to Question #293265 in Mechanical Engineering for Niaz

Question

a shaft manufacturer has produced 500 ms pipes of nominal outside diameter of 150mm. measurement show the maximum diameter to be 151.1mm while minimum diameter to be 149.3mm. hoever during shipment pipes of diameter 150+-0.5mm were accepted and the rest were rejected.assume gaussian/normal distribution.

Answer 1

N=500

D=150mm

Di=149.3mm

Do=151.1mm

Df=150+-0.5mm

∆=(151.1-149.3)+-0.5

=1.8+-0.5

=1.3 or 2.3