Assignment:
Indicate if the statement is true or false. If a statement is false, indicate the correct answer.
Question 1. In vibration analysis, we often assume that an accelerometer signal is stationary. A stationary signal has the property that the statistical properties of the signal do not change with time.
Question 2. The error due to under-sampling a continuous signal can be avoided by simply amplifying the signal.
Question 3. The discrete Fourier transform (DFT) of a signal is periodic with period being a function of signal sampling frequency.
Question 4. Proximity or displacement sensors are commonly used to measure the movement of theshaft in a ball bearing.
Question 5. Magnetic mounting is the best approach for mounting accelerometers on to bearing.