31.4.1. Signal Processing

Try these first

1. 1.

   What does FFT stand for?

   Hint

   Think about how signals are analyzed.

2. 2.

   Name one application of wavelet analysis.

   Hint

   Consider situations with sudden changes.

3. 3.

   What is the primary function of the Fast Fourier Transform?

   • To filter noise
   • To transform time-domain data into frequency-domain
   • To transform frequency-domain data into time-domain

   Hint

   Consider how signals can be viewed in different ways.

4. 4.

   True or False: Wavelet analysis is better for analyzing stationary signals.

   • True
   • False

   Hint

   Think about the characteristics of signals that change over time.

5. 5.

   Using FFT, analyze a hypothetical vibration signal from an industrial motor. Identify significant frequency components that indicate potential issues.

   Hint

   Look for abnormal spikes in frequency response charts.

6. 6.

   Propose a predictive maintenance plan that uses wavelet analysis to monitor the integrity of a pipeline subject to Dynamic load fluctuations.

   Hint

   Focus on how changes in signal pattern can inform maintenance timing.