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Quiz 3
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Q.1
According to Parseval’s theorem the energy spectral density curve is equal to?
area under magnitude of the signal
area under square of the magnitude of the signal
area under square root of magnitude of the signal
none of the mentioned
Q.2
What is Wiener-Khinchin theorem?
spectral density and auto-covariance makes a fourier transform pair
spectral density and auto-correlatioon makes a fourier transform pair
spectral density and variance makes a fourier transform pair
none of the mentioned
Q.3
How can power spectral density of non periodic signal be calculated?
by integrating
by truncating
by converting to periodic
none of the mentioned
Q.4
Power spectrum describes distribution of under frequency domain.
mean
variance
gaussian
none of the mentioned
Q.5
Energy spectral density defines
signal energy per unit area
signal energy per unit bandwidth
signal power per unit area
signal power per unit bandwidth
Q.6
Power spectral density function is a?
real and even function
non negative function
periodic
all of the mentioned
Q.7
White noise has mean and _ variance.
zero and zero
finite and zero
zero and finite
one and zero
Q.8
Which gives the measure of randomness of the random variable?
mean
variance
standard variance
pdf
Q.9
Random process is a function of
random event and time
random event and frequency
random event and real number
none of the mentioned
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