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WorksheetsECE 102 Quiz on Noise
Total questions: 10
Worksheet time: 5mins
The noise figure of a totally noiseless device is
unity
infinity
zero
100
Indicate the noise whose source is in a category different from that of the other three.
Solar
Cosmic
Atmospheric
Galactic
The following characteristics of noise except
Unwanted energy
Predictable in character
Present in the channel
Due to any cause
When dealing with random noise calculations it must be remembered that
all calculations are based on peak to peak values
calculations are based on peak values
calculations are based on average values
calculations are based on RMS values
Which of the following is the most reliable measurement for comparing amplifier noise characteristics?
signal-to-noise ratio
noise factor/figure
shot noise
thermal noise agitation
So called "1/f" noise is also called:
random noise
pink noise
white noise
partition noise
The formula used to measure the total noise figure due to amplifiers in cascade is called ___
Johnson’s Formula
Shannon’s Formula
Hartley’s Formula
Friis’ Formula
Noise uniformly distributed over the voice frequency band is called ____ noise.
impulse
quantizing
intermodulation
white
The rate at which information can be carried through a communication channel depends on
carrier frequency
bandwidth
transmission loss
transmitted power
The correct symbol for decibel is
DB
dB
Db
db
