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Vibrations Questions Set 3:

Quiz Mode

Find the natural frequency if the periodic time is given as 0.217 seconds.

0.434 Hz

0.04708 Hz

4.605 Hz

981 Hz

Solution:

Which of the following force-displacement relationships implies Simple Harmonic Motion?

F = -440x

F = 22x

F = -bx

Both 1 and 3

Solution:

What is the value of the viscous damping ratio for a system with a Quality factor of 5 in forced damped vibration?

0.1

0.2

0.3

0.4

Solution:

A body of mass M undergoes Simple Harmonic Motion with a frequency F and time period T. Find the product of the frequency F and time period T.

zero

infinite

unity

π/2

Solution:

What is the function of the controller in an active vibration isolation system?

Detect vibrations to be controlled

Distribute the masses

Interpret detected vibrations and execute commands

All of the above

Solution:

If the number of oscillations is given, which other parameter is required to find the periodic time?

Inertia forces.

External forces.

Time required for the oscillations.

Force required for the oscillations.

Solution:

Which of the following is related to D'Alembert's principle?

mg = K

(Total energy) at mean position - (Total energy) at extreme position = 0.

d/dt(2 × Inertia forces – External forces) = constant

m × d/dt(x) + Kx = 0

Solution:

A particle is in motion. In one case, it moves with low frequency, and in the other case, it moves with high frequency. Choose the correct names for the cases respectively.

vibration, vibration

oscillation, vibration

vibration, oscillation

oscillation, oscillation

Solution:

There are four samples P, Q, R, and S with natural frequencies of 64 Hz, 96 Hz, 128 Hz, and 250 Hz respectively. They are mounted on test setups for conducting vibration experiments. If a loud pure note of frequency 144 Hz is produced by some instrument, which of the samples will show the most perceptible induced vibration?

Solution:

Which of the following statements describes Rayleigh's method?

The total energy at the mean position is equal to the total energy at the extreme position.

The total energy at the mean position minus the total energy at the extreme position is zero.

The total energy at the mean position plus the total energy at the extreme position is zero.

The total energy at the mean position divided by the total energy at the extreme position is zero.

Vibrations Questions Set 3:

Find the natural frequency if the periodic time is given as 0.217 seconds.

Solution:

Which of the following force-displacement relationships implies Simple Harmonic Motion?

Solution:

What is the value of the viscous damping ratio for a system with a Quality factor of 5 in forced damped vibration?

Solution:

A body of mass M undergoes Simple Harmonic Motion with a frequency F and time period T. Find the product of the frequency F and time period T.

Solution:

What is the function of the controller in an active vibration isolation system?

Solution:

If the number of oscillations is given, which other parameter is required to find the periodic time?

Solution:

Which of the following is related to D'Alembert's principle?

Solution:

A particle is in motion. In one case, it moves with low frequency, and in the other case, it moves with high frequency. Choose the correct names for the cases respectively.

Solution:

Solution:

Which of the following statements describes Rayleigh's method?

Solution:

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