This preview shows page 1. Sign up to view the full content.
Unformatted text preview: e / False
(i) When performing a DFT, the frequency resolution can be improved by increasing
the sampling rate (circle one):
True / False
poorlyphrased question, either answer is valid
(j) Frequency leakage occurs when the sampling time does not coincide with an integer
multiple of the period of the sampled signal (circle one):
True / False
(k) An A/D system with a sampling rate of fs = 500Hz is used to measure a pure
sinusoid given by g(t) = 10sin(2π 800 t). What frequency is recorded by the A/D
system?
fN = fs/2 = 250 Hz
Frequency folding yields: 250  (8003x250) = 250  50 = 200 Hz
Note: you should be able to construct your own folding diagram to yield the same result
(l) An A/D system with a sampling rate of fs = 500Hz is used to measure a pure sinusoid
given by g(t) = 10sin(2π 1600 t). What frequency is recorded by the A/D system?
Frequency folding yields: 16006x250 = 1600  1500 = 100 Hz
(m)The sampled signal in (l) is inphase with y(t):
True / False
(n) By choosing equal nominal values for the resistors in a Wheatstone bridge, the
voltage inputoutput relationship becomes linear (circle one):
True / False
poorlyphrased question, either answer is valid
(o) By choosing equal nominal values for the resistors in a Wheatstone bridge, the
sensitivity of the system to changes in a single resistor is maximized (circle one):
True / False 2 30 pts 2. Consider a periodic sawtooth function defined as:
y(t) = t for π < t ≤ π
(a) What is the period T for this functio...
View
Full
Document
This document was uploaded on 02/06/2014.
 Spring '14

Click to edit the document details