[MAE 2381] CHAPTER 2 EXAM 100% ACCURATE

[MAE 2381] CHAPTER 2 EXAM 100%
ACCURATE

Aperiodic waveforms - ANSWERStep
Ramp
Pulse (impulse)

Analysis - ANSWERDetermine amplitudes, frequencies, and phases

Synthesis - ANSWERReconstructing original function or signal

Digitization error - ANSWERLoss of info due to quantization of the amplitude of an
analog signal

Discretization error - ANSWERLoss of info due to sampling an analog signal at
regular time intervals

Spectral leakage - ANSWER"Clipping" of periodic functions due to number of data
samples examined

If y(t) is even, its Fourier series will only contain - ANSWERCosine terms

If y(t) is odd, its Fourier series will contain only - ANSWERSine terms

Even function - ANSWERSymmetric about the origin, g(-t) = g(t)

Odd function - ANSWERh(-t) = -h(t)

Windowing - ANSWERCleans up data in the time domain to reduce the effect of
"clipping"

Filtering - ANSWERRemoval of unwanted frequency components

Hanning window - ANSWERMakes a function that begins and ends at y=0

Gain - ANSWERAmplification factor to amplify a signal with low amplitude to high
amplitude. Equal to amplified amplitude divided by original amplitude

Magnitude ratio - ANSWERWhen a signal's amplitude is modified by some process.
Equal to modified magnitude divided by original magnitude

Aliasing - ANSWERWhen a continuous signal is sampled, information is lost. The
lost info can be totally absent from the discrete data set or distort the info in the data
set