Mass

Stiffness

Damping

All of the above

The frequency at which the structure vibrates freely

The frequency at which the structure resonates

The frequency at which the structure is most susceptible to damage

None of the above

It reduces the amplitude of vibrations

It increases the natural frequency of the structure

It shifts the resonant frequency of the structure

None of the above

The condition when the frequency of an applied force matches the natural frequency of the structure

The condition when the amplitude of vibrations is maximum

The condition when the structure is most susceptible to damage

All of the above

Adding mass to the structure

Increasing the stiffness of the structure

Adding damping to the structure

All of the above

External forces

Internal forces

Both external and internal forces

None of the above

Free vibration

Forced vibration

Damped vibration

All of the above

Free vibration occurs without any external force, while forced vibration is caused by an external force

Free vibration has a constant amplitude, while forced vibration has a varying amplitude

Free vibration occurs at the natural frequency of the structure, while forced vibration occurs at the frequency of the external force

All of the above

It reduces the amplitude

It increases the amplitude

It has no effect on the amplitude

None of the above

Adding viscoelastic materials

Adding tuned mass dampers

Adding friction dampers

All of the above

To reduce the amplitude of vibrations at a specific frequency

To increase the natural frequency of the structure

To shift the resonant frequency of the structure

None of the above

Modal analysis

Harmonic analysis

Response spectrum analysis

All of the above

To determine the natural frequencies and mode shapes of a structure

To determine the response of a structure to a harmonic force

To determine the response of a structure to a transient force

None of the above

To determine the response of a structure to a harmonic force

To determine the natural frequencies and mode shapes of a structure

To determine the response of a structure to a transient force

None of the above

To determine the response of a structure to a transient force

To determine the natural frequencies and mode shapes of a structure

To determine the response of a structure to a harmonic force

None of the above