Answer Happy

II. True or False (10 pts) 2.1 Frequency response function provides the system information from the initial transient stage to the final steady sate. 2.2 The shifting of signal in time-domain corresponds to the phase shifting of signal in frequency-domain. 2.3 The measured quantity is the input signal and can be treated as an excitation of the system. 2.4 Piezoelectric sensors work only for the time-variant force. 2.5 One can use Fourier series expansion to obtain the frequency spectrum of a periodic signal. 2.6 The frequency response function is a special case of the transfer function 2.7 If a sensor does not need any external source of power for its operation, it is called active sensor. 2.8 Resistance sensor can not be used to measurement the angular displacement. 2.9 The measurement is dynamic when the measured physical quantities change during the measurement. 2.10 The frequency spectrum of a non-periodic signal is continuous.