B.TechSemester 52022-23Mechanical VibrationsKME057

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.

Course:B.Tech

Semester:Semester 5

Session:2022-23

University:AKTU / UPTU

Rate this paper

Questions Asked in 2022-23

Mechanical Vibrations (KME057) — extracted question text

Section AAttempt all questions in brief. 2x10 = 20

a
Distinguish between periodi c motion and harmonic motion
b
What do you mean by the degree of freedom?
c
Define the Ma gnification Factor
d
Is it possible to completely balance a rotating system? Explain
e
State Orthogonality Principle
f
What do you mean by two- degree freedom systems?
g
What do you mean by static coupling?
h
What 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?

Section BAttempt any three of the following: 10x3 = 30

a
What do you mean by Vibrati ons? Classify Vibrations systems with suitable diagram
b
A 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
c
Explain the working of the Centrifugal pendulum absorbers i n detail with a schematic diagram
d
Explain Rayleigh’s method fo r finding the natural frequency of a multi-degree system
e
What do you mean by secondary critical speed?

Section CAttempt any one part of the following: 10x1 = 10

a
Derive the equation of motio n by the help of D’Alembert’s principle
b
Define logarithmic decrement and show that logarithmic decrement ‘δ’ is given
a
Derive an expression for the magnification factor and discuss its variation with frequency ratio
b
Explain with a neat sketch th e working principle of displacement measuring instruments
a
Explain the working of the torsional vibration absorber in detail with a schematic diagram
b
How the natural frequency of torsional vibrations for a two -rotor system is obtained?
a
Discuss Holzer’s method for finding the natural frequencies of multi-rotor vibrating systems
b
Derive an expre ssion for forced vibration of multi-degree freedom systems
a
A 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
b
Discuss the critical speed of a shaft having multiple discs

Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

Mechanical Vibrations — Other Year Papers

AKTU Mechanical Vibrations PYQs from other sessions

Mechanical Vibrations2023-24 Mechanical Vibrations2024-25

More B.Tech Semester 5 (2022-23) Papers

Other subjects from same semester and session

Electronics Switching2022-23 Computer Integrated Manufacturing2022-23 Modern Construction Materials2022-23 Object Oriented System Design With C++2022-23 Digital Signal Processing2022-23 Finite Element Methods2022-23 Advance Digital Design Using Verilog2022-23 Business Intelligence And Analytic2022-23

View all B.Tech Semester 5 2022-23 papers →

Syllabus & More PYQs

Paper solve karne se pehle unit-wise syllabus dekh lo

AKTU 3rd Year PYQs — All Branches