Vibration Terms PDF

What term refers to the transfer of energy between kinetic and potential forms during vibration? Energy Exchange What term describes the decay of amplitude over time in a damped vibration? Logarithmic decrement Which of the following factors affect the damping ratio of a vibrating system? Damping an...

What term refers to the transfer of energy between kinetic and potential forms during vibration? Energy Exchange What term describes the decay of amplitude over time in a damped vibration? Logarithmic decrement Which of the following factors affect the damping ratio of a vibrating system? Damping and frequency What type of vibration occurs when an external force is continuously applied to a system? Forced vibration The point where the amplitude of forced vibration is maximum and in phase with the exciting force is called: Resonance In a vibrating system, what term describes the force required to displace the system from its equilibrium position? Inertia force The frequency at which a system naturally vibrates in the absence of external forces is known as: Resonant frequency What term describes the decay of amplitude over time in a damped vibration? Logarithmic decrement Which of the following factors affect the damping ratio of a vibrating system? Damping and frequency What is the term for the time taken for one complete cycle of vibration? Period The ratio of actual damping to critical damping in the system is known as: Damping Ratio What is the difference in frequency between two interacting vibrations called? Beat Frequency Which of the following represents the starting displacement and velocity of the system at the beginning of vibration? Initial Conditions What term describes the spatial pattern of vibration exhibited by a structure at a particular mode? Mode Shape The force opposing the change in velocity of a vibrating mass is called: Inertia Force When the damping ratio of a vibrating system is less than one, the system is classified as: Underdamped Which of the following factors affects the natural frequency of a vibrating system? Mass and stiffness The motion of a swing as it moves back and forth freely is an example of: Free vibration A mass-spring system oscillates with a period of 2 seconds. What is its frequency? 0.5 Hz Which of the following represents the point of maximum displacement from the equilibrium position during vibration? Amplitude Which of the following represents the maximum displacement from the equilibrium position during vibration? Amplitude The ratio of the amplitude of forced vibration to the amplitude of the exciting force is called: Magnification factor What phenomenon occurs when the frequency of an external force is slightly different from the natural frequency of a system? Beat frequency The energy lost by a vibrating system due to friction and other dissipative forces is known as: Damping The time taken for a vibrating system to reach 63.2% of its maximum displacement during a damped vibration is called: Logarithmic decrement In a vibrating system, what term refers to the transfer of energy between different modes of vibration? Mode coupling In a vibrating system, what term describes the relative position in the cycle of vibration? Phase What phenomenon occurs when the frequency of an external force matches the natural frequency of a system? Resonance The energy lost by a vibrating system due to friction and other dissipative forces is known as: Damping The ratio of the amplitude of forced vibration to the amplitude of the exciting force is called: Magnification factor What type of vibration occurs when a periodic force is applied to a system at or near its natural frequency? Forced vibration Which of the following represents the maximum displacement from the equilibrium position during vibration? Amplitude The time taken for a vibrating system to reach 63.2% of its maximum displacement during a damped vibration is called: Logarithmic decrement In a vibrating system, what term refers to the transfer of energy between different modes of vibration? Mode coupling The frequency at which a system naturally vibrates in the absence of external forces is known as: Resonant frequency What phenomenon occurs when an external force is applied at the natural frequency, resulting in increased amplitude? Resonance What is the characteristic value representing the natural frequency of vibration called? Eigenvalue Which term refers to the specific mode of vibration corresponding to an eigenvalue? Eigenmode What is the stable position where the system tends to return after displacement? Equilibrium Position Which of the following terms describes the motion characterized by sinusoidal oscillations? Harmonic Motion What is the name of the phenomenon where multiple frequencies are present in a vibrating system? Harmonics The maximum amplitude of vibration that a system can reach without going into resonance is called: Critical amplitude Which of the following factors influences the period of vibration in a mass-spring system? Mass and stiffness A vibrating system has a natural frequency of 10 Hz. What is its period? 0.1 s What property of a material refers to its ability to return to its original shape after deformation? Elasticity The energy possessed by a vibrating system due to its motion is known as: Kinetic Energy What term represents the energy stored in a vibrating system due to its position relative to the equilibrium? Potential Energy Free vibration refers to the vibration of a system in the absence of: External forces or damping What type of vibration occurs when a system is displaced from its equilibrium and left to oscillate freely? Free vibration Which of the following is a measure of how rapidly a vibrating system loses its energy over time? Damping ratio