Consider the following statements:1.The delay time is the time required to reach 50% of the final value in the first time.2.The rise time is the time required for the response to rise from 10% to 90% of its final value for underdamped systems.3.The rise time is the time required for the response to rise from 0 to 100% for the underdamped systems.Which of these statements are correct?

Frequency Response Analysis topics include: Frequency response, polar and bode plots, pass and minimum phase systems, correlation between time and frequency response and transfer functions. Frequency response analysis (FRA) is a tool that measures the output spectrum of a system relative to a stimulus. It's also known as Transfer Function Analysis.  FRA calculates the response of a structure to steady state oscillatory excitation. The loading is sinusoidal, and the response occurs at the same frequency. The loads can be forces, displacements, velocity, and acceleration.  FRA is used in... Show more

Frequency Response Analysis topics include: Frequency response, polar and bode plots, pass and minimum phase systems, correlation between time and frequency response and transfer functions.

Frequency response analysis (FRA) is a tool that measures the output spectrum of a system relative to a stimulus. It's also known as Transfer Function Analysis. 

FRA calculates the response of a structure to steady state oscillatory excitation. The loading is sinusoidal, and the response occurs at the same frequency. The loads can be forces, displacements, velocity, and acceleration. 

FRA is used in many applications, including:
Noise, vibration, and harshness (NVH) analysis of vehicles
Rotating machinery
Transmissions
Powertrain systems
Electrochemical impedance spectroscopy (EIS)
Materials analysis
Aerospace control 

FRA can also be used to check the mechanical and electrical integrity of power transformers. It can be used for acceptance tests, commissioning, relocation, post fault, and manufacturing testing.

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