Critical speed is expressed as

Question

Critical speed is expressed as

1 Answer

Related questions

+1 vote

1 answer

The first critical speed of an automobile running on a sinusoidal road is calculated by (modeling it as a single degree of freedom system)

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The critical speed of a shaft with a disc supported in between is equal to the natural frequency of the system in

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The accelerometer is used as a transducer to measure earthquake in Richter scale. Its design is based on the principle that

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

When a body is subjected to transverse vibrations, the stress induced in a body will be

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The natural frequency of a spring-mass system on earth is ωn. The natural frequency of this system on the moon (gmoon = gearth/6) is

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

In steady state forced vibrations, the amplitude of vibrations at resonance is _____________ damping coefficient.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

In vibration isolation system, if ω/ωn, then the phase difference between the transmitted force and the disturbing force is

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

While calculating the natural frequency of a spring-mass system, the effect of the mass of the spring is accounted for by adding X times its value to the mass, where X is

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

In vibration isolation system, if ω/ωn < 2, then for all values of damping factor, the transmissibility will be

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The factor which affects the critical speed of a shaft is

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The ratio of the actual damping coefficient (c) to the critical damping coefficient (cc ) is known as _________

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The speed at which the shaft runs so that the additional deflection from the axis of rotation of the shaft becomes infinite, is known as _________

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

Assuming the shaft to be freely supported. Calculate the whirling speed of the shaft : 2 cm diameter and 60 cm long carrying a mass of 1 kg at its mid-point. The density of the shaft material is 40 Mg/m^3, and Young’s modulus is 200 GN/m^2.

asked Sep 22, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The ratio of the maximum displacement of the forced vibration to the deflection due to the static force, is known as

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

Fluid resistance causes damping which is known as ______

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

If the mass is of 10 Kg, find the natural frequency in Hz of the free longitudinal vibrations. The displacement is 0.01mm.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

The natural frequency (in Hz) of free longitudinal vibrations is equal to

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

Magnification factor is the ratio of the maximum displacement due to forced vibrations to the deflection due to _______

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

Find the natural frequency in Hz of the free longitudinal vibrations if the displacement is 2mm.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

A cantilever shaft having 50 mm diameter and a length of 300 mm has a disc of mass 100 kg at its free end. The Young’s modulus for the shaft material is 200 GN/m^3. Determine the static deflection of the shaft in mm.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

A cantilever shaft having 50 mm diameter and a length of 300 mm has a disc of mass 100 kg at its free end. The Young’s modulus for the shaft material is 200 GN/m^2. Determine the frequency of transverse vibrations of the shaft.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

Calculate the static deflection in µm of transverse vibrations if the frequency is 200Hz.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

In under damped vibrating system, if x1 and x2 are the successive values of the amplitude on the same side of the mean position, then the logarithmic decrement is equal to

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

When the centre of gravity of the rotor lies between the centre line of the shaft and the centre line of the bearing, e is taken positive.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

+1 vote

1 answer

Calculate the natural frequency of transverse vibrations if the static deflection is 0.01mm.

asked Sep 23, 2022 in Machine Dynamics by Grayson (34.3k points)

Fred · Answer 1 · 2022-10-15T14:23:11+0000

Correct choice is (d) natural frequency of the shaft

Easiest explanation: Critical speed is expressed as natural frequency of the shaft.

Critical speed is expressed as

Please log in or register to answer this question.

1 Answer

Please log in or register to add a comment.

Related questions

Categories