engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Design of Machine Elements Rolling Contact Bearing Bearing Life under Variable Load
Two identical ball bearings P and Q are operating at loads 30 kN and 45 kN respectively. The ratio of the life of bearing P to the life of bearing Q is
1
81/16
2
27/8
3
9/4
4
3/2