Question
A true centrifugal casting operation needs to be performed horizontally to make copper tube section with outer diameter of 250 mm and inner diameter of 230 mm. The value of acceleration due to gravity, g = 10 m/s². If a G-factor (ratio of centrifugal force to weight) of 60 is used for casting the tube, the rotational speed required is______ rpm (round off to the nearest integer).
Answer :
Correct answer is : 661.59
G-factor = 60, do = 250 mm = 0.25 m, g = 10 m/s2
For horizontal centrifugal casting, the outer radius is considered during the calculation.
= 60
N =
N = 661.93662 rpm
Access expert-curated educational resources and study materials—completely free.
Create, conduct, and manage professional online assessments with Crey. Perfect for teachers and institutes.
Copyright © 2026 Crey. All Rights Reserved.
