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 _________

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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)

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A cantilever shaft has a diameter of 6 cm and the length is 40cm, it has a disc of mass 125 kg at its free end. The Young’s modulus for the shaft material is 250 GN/m². Calculate the static deflection in nm.

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

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

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In the given figure, the x – axis represents radius of rotation and the y axis represents the controlling force. This graph is known as _________

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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)

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A cantilever shaft having 50 mm diameter and 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. Calculate the natural longitudinal frequency in Hz.

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

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

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

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Maximum displacement due to forced vibration is dependent on deflection due to static force.

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Critical speed is expressed as

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For the same dimensions of the shaft which of the following has the greater natural frequency?

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

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Piston diameter = 0.24 m, length of stroke = 0.6 m, length of connecting rod = 1.5 m, mass of reciprocating parts = 300 kg, mass of connecting rod = 250 kg; speed of rotation = 125 r.p.m; centre of gravity of connecting rod from crank pin = 0.5 m ; Kg of the connecting rod about an axis through the centre of gravity = 0.65 m Find the equivalent length L of a simple pendulum swung about an axis.

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

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A Porter governor has equal arms each of length 250 mm and pivoted on the axis of rotation. Each ball has a mass of 5 kg and the central load has a mass on the sleeve of 25 kg. The radius of rotation of the ball is 150 mm when the governor begins to lift and 200 mm when the governor is at maximum speed. Considering friction at the sleeve of 10N, find the power of the governor in N-m

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

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