Explore topic-wise MCQs in Mechanical Engineering.

This section includes 6 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

In a particular application, the shaft is subjected to bending loads and also large axial loads. The bearing suitable for supporting such a shaft is

A. thrust bearing
B. tapered roller bearing
C. ball bearing
D. spherical roller bearing
Answer» E.
Discussion
2.

Consider the following statements in connection with thrust bearings:1) Cylindrical thrust bearings have higher coefficient of friction than ball thrust bearings.2) Taper rollers cannot be employed for thrust bearings.3) Double-row thrust ball bearing is not possible4) Lower race, outer race and retainer are readily separable in thrust bearings.Which of the above statements are correct?

A. 1 and 2
B. 2 and 3
C. 3 and 4
D. 1 and 4
Answer» E.
Discussion
3.

In an application, the bearing is subjected to radial as well as axial loads. Which type of rolling contact bearings you would suggest?

A. Cylindrical roller bearing
B. Needle roller bearing
C. Thrust ball bearing
D. Taper roller bearing
Answer» E.
Discussion
4.

A bearing supports a radial load of 7000 N and a thrust load of 2100 N. The desired life of the ball bearing is 160 × 106 revolutions at 300 rpm. If the load is uniform and steady, service factor is 1, radial factor is 0.65, thrust factor is 3.5, k = 3 and rotational factor is 1, the basic dynamic load rating of a bearing will be nearly

A. 65 kN
B. 75 kN
C. 85 kN
D. 95 kN
Answer» B. 75 kN
Discussion
5.

A radial load of 6.5 kN is applied on a cylindrical roller bearing. The desired life of the bearing with 90% reliability is 18000 hours with the application factor 1.7. if the shaft rotates at 1600 rpm, then the required basic dynamic load rating for the bearing is given by:

A. 103.4 MN
B. 103.4 kN
C. 1.042 kN
D. 10.34 kN
Answer» C. 1.042 kN
Discussion
6.

If the equivalent load in case of a radial ball baring is 50000 N and the basic dynamic load rating is 62500 N, then L­10 life this bearing is

A. 1.953 million of revolutions
B. 3.765 million of revolutions
C. 6.953 million of revolutions
D. 9.765 million of revolutions
Answer» B. 3.765 million of revolutions
Discussion