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Vibrations Questions Set 6:

Quiz Mode

What is the number of Degrees of Freedom in a Bifilar Experiment?

Solution:

Which of the following ratios is used to find the torsional stiffness?

m x d/dt(x) + Kx = 0

T/θ

G/L

(1/2)mx^2

Solution:

What is the frequency range of supersonic vibrations?

None of the above

20 × 10^3 Hz

20 to 20 × 10^3 Hz

Above 20 × 10^3 Hz

Solution:

The resistance to the motion of a vibrating body is provided by

Speed of vibration

Length of the material

Medium of vibration

External friction

Solution:

If the length of a simple pendulum is increased nine times, then the frequency of the system will be:

1/4 times

1/2 times

1/3 times

Same as before

Solution:

What is the time period and effective length on Earth of a Seconds Pendulum?

3 seconds, 2 meters

2 seconds, 1 meter

4 seconds, 3 meters

1 second, 1 meter

Solution:

For a damped single degree of freedom system with damping ratio of 0.1, what will be the ratio of two successive peak amplitudes of free vibration ?

1.88

1.65

1. 98

2.10

Solution:

The body is vibrating at 20 vibrations per second in Simple Harmonic Motion with an amplitude of 20 cm. What is the maximum velocity in cm/s?

200π cm/s

400π cm/s

600π cm/s

800π cm/s

Solution:

Find the stiffness of the spring, if the mass of the object attached to the spring is 10 kg and the deflection of the spring is 0.01 m. (g = 9.81 m/s²).

1000 N/m

98.1 N/m

9810 N/m

981 N/m

Solution:

A spring with a spring constant of 1300 N/m is mounted on a horizontal table. A mass of 3 kg is attached to the free end of the spring. The mass is then pulled sideways to a distance of 4 cm and released. What is the maximum speed of the mass?

0.2 m/s

0.2 cm/s

0.8 m/s

0.08 m/s

Vibrations Questions Set 6:

What is the number of Degrees of Freedom in a Bifilar Experiment?

Solution:

Which of the following ratios is used to find the torsional stiffness?

Solution:

What is the frequency range of supersonic vibrations?

Solution:

The resistance to the motion of a vibrating body is provided by

Solution:

If the length of a simple pendulum is increased nine times, then the frequency of the system will be:

Solution:

What is the time period and effective length on Earth of a Seconds Pendulum?

Solution:

For a damped single degree of freedom system with damping ratio of 0.1, what will be the ratio of two successive peak amplitudes of free vibration ?

Solution:

The body is vibrating at 20 vibrations per second in Simple Harmonic Motion with an amplitude of 20 cm. What is the maximum velocity in cm/s?

Solution:

Find the stiffness of the spring, if the mass of the object attached to the spring is 10 kg and the deflection of the spring is 0.01 m. (g = 9.81 m/s²).

Solution:

A spring with a spring constant of 1300 N/m is mounted on a horizontal table. A mass of 3 kg is attached to the free end of the spring. The mass is then pulled sideways to a distance of 4 cm and released. What is the maximum speed of the mass?

Solution:

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