Mechanical Vibrations (KME057) - AKTU Question Paper 2022-23
B.Tech · Semester 5 · Free PDF Download
This is the official AKTU Mechanical Vibrations Previous Year Question Paper for B.Tech Semester 5, academic session 2022-23. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.
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Questions Asked in 2022-23
Mechanical Vibrations (KME057) — complete question paper
- aDistinguish between periodi c motion and harmonic motion
- bWhat do you mean by the degree of freedom?
- cDefine the Ma gnification Factor
- dIs it possible to completely balance a rotating system? Explain
- eState Orthogonality Principle
- fWhat do you mean by two- degree freedom systems?
- gWhat do you mean by static coupling?
- hWhat do you mean by influence coefficients? (i) What do you mean by Whirling of Shaft? (j) Why Critical Speed of the shaft is so important?
- aWhat do you mean by Vibrati ons? Classify Vibrations systems with suitable diagram
- bA rotor of mass 20 kg is mounted on a shaft of 1000 mm span and 40 mm diameter in short bearings. The centre of gravity of the rotor is 0.04 mm away from the geometric centre of the rotor. If the rotor runs at 2500 r.p.m., find the amplitude, steady state vibration and dynamic load transmitted to the bearing. Take E = 200 GPa
- cExplain the working of the Centrifugal pendulum absorbers i n detail with a schematic diagram
- dExplain Rayleigh’s method fo r finding the natural frequency of a multi-degree system
- eWhat do you mean by secondary critical speed?
- aDerive the equation of motio n by the help of D’Alembert’s principle
- bDefine logarithmic decrement and show that logarithmic decrement ‘δ’ is given
- aDerive an expression for the magnification factor and discuss its variation with frequency ratio
- bExplain with a neat sketch th e working principle of displacement measuring instruments
- aExplain the working of the torsional vibration absorber in detail with a schematic diagram
- bHow the natural frequency of torsional vibrations for a two -rotor system is obtained?
- aDiscuss Holzer’s method for finding the natural frequencies of multi-rotor vibrating systems
- bDerive an expre ssion for forced vibration of multi-degree freedom systems
- aA rotor having a mass of 6 kg is mounted midway on a12 mm d iameter shaft supported at the ends by two bearings. The bearing span is 500 mm. Because of certain manufacturing in accuracies, the C.G. of the disc is 0.04 mm away from the geometric centre of the rotor. If the system rotates at 250 0 rpm, find the amplitude of steady-state vibrat ions and the dynamic force tran smitted to the bearings. Neglect damping and take E = 1.96 × 10 11 N/m2. Assume the shaft to be simply supported
- bDiscuss the critical speed of a shaft having multiple discs
Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.
Repeated Questions — KME057
Questions that appeared in more than one session, found by comparing 2 years of Mechanical Vibrations papers (2022-23, 2023-24)
Derive an expre ssion for forced vibration of multi-degree freedom systems
Appeared in: 2022-23 · 2023-24
Mechanical Vibrations — Other Year Papers
AKTU Mechanical Vibrations PYQs from other sessions
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