For a gearing system, the equivalent system is made consisting of two rotors. How many nodes will this new equivalent system will have?

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For a gearing system, the equivalent system is made consisting of three rotors. How many nodes will this new equivalent system will have?

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

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When inertia of gearing is taken into consideration, then an additional shaft must be introduced in the equivalent system of the rotors connected by the shaft.

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A geared system possessed a strain energy if 150kJ, later it was converted into a two-rotor system connected by a shaft. The Strain energy of the equivalent system will be _____

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

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A geared system possessed a kinetic energy if 200kJ, later it was converted into a two-rotor system connected by a shaft. The kinetic energy of the equivalent system will be_____

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

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In a gearing system, pump speed is one third of the motor. Shaft from motor is 6 cm in diameter and 30cm long, the impellar shaft is 10cm diameter and 60cm long. Mass moment of inertia is 1500 Kg-m^2, C = 80Gn/m^2. Neglecting the inertia of shaft and gears calculate the frequency of free torsional vibrations in Hz.

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

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Free torsional vibrations will occur in a two rotor system only if both rotors have same frequency.

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

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In a geared system free torsional vibration will take place when the Inertia of gear is taken into consideration.

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

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When inertia of gearing is taken into consideration, then which of the following should be taken into account.

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

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For the free torsional vibration of a geared system which of the following statement is true?

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Free torsional vibrations will occur in a three rotor system only if all rotors have same frequency.

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

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What is the total number of nodes formed in a three rotor system if the rotors at one of the ends and the one in the middle rotate in the same direction?

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

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A single cylinder oil engine works with a three rotor system, the shaft length is 2.5m and 70mm in diameter, the middle rotor is at a distance 1.5m from one end. Calculate the free torsional vibration frequency for a two node system in Hz if the mass moment of inertia of rotors in Kg-m^2 are: 0.15, 0.3 and 0.09. C=84 kN/mm^2

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

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At a nodal point in the shaft, the frequency of vibration is _________

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

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In a two rotor system, torsional vibration occurs only if the rotors are moving in the same direction.

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

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If the pinion has 20 teeth and the gear has 32 teeth, then what is the gear ratio?

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

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A single cylinder oil engine works with a three rotor system, the shaft length is 2.5m and 70mm in diameter, the middle rotor is at a distance 1.5m from one end. Calculate the free torsional vibration frequency for a single node system in Hz if the mass moment of inertia of rotors in Kg-m^2 are: 0.15, 0.3 and 0.09. C=84 kN/mm^2

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

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In a three rotor system, for the middle rotor, if the stiffness of both the length either side of the rotor is increased to two times what will be the effect on total stiffness of the middle rotor?

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

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For a vibration system having different shaft parameters, calculate which of the following cannot be the diameter of the equivalent shaft if the diameters of shafts in m are: 0.05, 0.06, 0.07.

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

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In which of the following condition torsional vibration will not take place, considering 3 rotors A, B and C. A is rotating in clockwise direction.

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

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Consider P and Q as the shaft having two rotors at the end of it, what is the point N known as in the given figure?

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

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An Internal combustion engine has a connecting rod of mass 2 kg and the distance between the centre of crank and centre of gudgeon pin is 25 cm. The Center of Gravity lies at a point 10 cm from the gudgeon pin along the line of centres. The radius of gyration of this system about an axis through the Center of Gravity perpendicular to the plane of rotation is 11 cm. If two masses are used instead of the connecting rod, one at the gudgeon pin and other at the crank pin. What will be the new radius of gyration?

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

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For a two rotor system, the mass moment of inertia of one shaft(A) is twice the other(B), then what is the relation between the length of the shafts.

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

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For a two rotor system, the length of one shaft(A) is twice the other(B), then what is the relation between the Mass moment of inertia of the shafts.

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

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Keeping the mass moment of inertia of both the shafts in a two rotor system same, if the length of one shaft is doubled what should be the effect on the length of other shaft?

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

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In the given figure representing a two rotor system, what is the line LNM called?

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

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