Ball bearings are used to reduce friction by:

بال بیرنگ کی طرف سے رگڑ کو کم کرنے کے لئے استعمال کیا جاتا ہے

Applying lubricant in the balls used

Reducing the area of the contact with the use of metallic balls

Increasing the area of contact with the use of metallic balls

None of these

All of these

Ball bearing reduces friction by using smooth balls lubricated with oil or grease

that freely roll between a smooth inner and outer surface.

SH5-8-2023

ND06-08-2023