engineering recuitment BEL Probationary Engineers Mock Test 2025 Mechanical Vibrations Forced Vibration Transmissibility and Magnification Factor
Which of the following gives the expression for the magnification factor at resonance in forced system?
(where: s is stiffness of the spring, c is the damping coefficient or damping force unit velocity and ωn is the natural circular frequency)
1
s/(cωn)
2
(cωn)/s
3
\(\sqrt {\frac{s}{{c{\omega _n}}}} \)
4
\(\sqrt {\frac{{c{\omega _n}}}{s}} \)