Machine tool manufacturers prefer grey cast-iron grade 40 for producing machine columns and tables because grey cast-iron is
1. Heavy
2. Easily castable
3. Easily weldable
4. Having good damping capacity
Select the correct answer using the codes given below :
Option (A)
1 and 2
Option (B)
2 and 4
1 and 3
3 and 4
Correct Option:
Question Solution:
The cast irons containing graphite in the form of flakes (whorl-like shape) they have excellent tamping capacity due to have excellent tamping capacity due to more internal discontinuities which favor fast dissipation of vibrational energy