Explore topic-wise MCQs in Mechanical Vibrations.

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

1.

A vibrating system consists of mass of 50 kg, a spring with a stiffness of 30 kN/m and a damper. If damping is 20% of the critical value, the natural frequency of damped vibrations will be

A. 16 rad/s
B. 20 rad/s
C. 24 rad/s
D. 28 rad/s
Answer» D. 28 rad/s
Discussion
2.

Calculate the critical sped of a lightweight, vertically mounted shaft carrying a rotor of mass 200 g at its mid-point. The stiffness of shaft at the location stiffness is 72000 N/m.

A. 360 rad/s
B. 19 rad/s
C. 360000 rad/s
D. 600 rad /s
Answer» E.
Discussion
3.

Linear vibration analysis has the greatest advantage because of

A. Newton's laws of motion
B. eigenvalue analysis
C. Rayleigh quotient
D. principle of superposition
Answer» B. eigenvalue analysis
Discussion
4.

A vibration system consists of a mass of 175 kg, a spring stiffness 700 N/cm and damper with a damping coefficient of 7 Ncm-1sec. Damping factor of the system is:

A. 0.15
B. 0.25
C. 0.2
D. 0.1
Answer» E.
Discussion