Explore topic-wise MCQs in Machine Dynamics.

This section includes 4 Mcqs, each offering curated multiple-choice questions to sharpen your Machine Dynamics knowledge and support exam preparation. Choose a topic below to get started.

1.

The natural frequency of a spring-mass system on earth is n. The natural frequency of this system on the moon (gmoon = gearth/6) is

A. <sub>n</sub>
B. 0.408 <sub>n</sub>
C. 0.204 <sub>n</sub>
D. 0.167 <sub>n</sub>
Answer» B. 0.408 <sub>n</sub>
Discussion
2.

While calculating the natural frequency of a spring-mass system, the effect of the mass of the spring is accounted for by adding X times its value to the mass, where X is

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

In vibration isolation system, if / n < 2, then for all values of damping factor, the transmissibility will be

A. less than unity
B. equal to unity
C. greater than unity
D. zero
Answer» D. zero
Discussion
4.

In vibration isolation system, if / n, then the phase difference between the transmitted force and the disturbing force is

A. 0
B. 90
C. 180
D. 270
Answer» D. 270
Discussion