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The MATLAB program fft935.m uses the command Pxx = X.*conj(X)/(N/2) which computes
 power spectral density at each frequency
 both of these
 energy in the x(t) at each frequency

The MATLAB program fft935.m uses the command X = fft(x,N) where ___ is the variable containing a bunch of complex numbers.
X

The MATLAB program fft935.m uses the command X = fft(x,N) where ___ is the function that performs the Fourier Transform.
fft

The MATLAB program fft935.m uses the command X = fft(x,N) where ___ is the number of values of x and X.
N

. The MATLAB program fft935.m uses the command X = fft(x,N) where ___ is the timedomain signal
x

Ex935 requires the MATLAB program fft935.m which performs an FFT. The number of lines of program code required for the FFT function is
1

Ex935 requires the MATLAB program fft935.m which computes and plots the Fourier Transform of x(t).
true

Ex935 requires the MATLAB program fft935.m implements the Fourier Transform using a specific implemention:
fft  Fast Fourier Transform

Ex935 requires the MATLAB program fft935.m which is also called a
script

Ex935 generates a timedomain signal where the signaltonoise ratio is nearly
0.3

Ex935 generates a timedomain signal with 3 sinusoids and noise with a peaktopeak amplitude of nearly
60

Ex935 generates a timedomain signal with 3 sinusoids with a peaktopeak amplitude of nearly
16

Ex935 generates a timedomain signal with 3 sinusoids that have ____ frequencies and _____ amplitudes.
different, different

Ex935 generates a timedomain signal containing _____ values.
4096

Ex935 generates a timedomain signal containing _____.
noise or random numbers, which are the same thing

Ex935 generates a timedomain signal containing ____ sine components.
3

Ex935 is primarily about
the Fourier Transform

For a Bode phase of 85 degrees, and an input of A*sin(w*t), the output at that frequency would be
B*sin(w*t+85 deg)

For a Bode gain of 20 dB, and an input of 30sin(w*t), the output at that frequency would be
3sin(w*t+theta)

For a Bode gain of 20 dB, the system numeric gain at that frequency is
0.1

A Bode plot shows output and input sine wave ratios over a wide range of frequencies.
true

A Bode plot shows the sinusoidal output signal for a linear system relative to the sinusoidal input signal.
true

A highpass Bode phase plot shows nearly _____ phase at low frequency and nearly ______ phase at high frequency.
90, 0

A highpass Bode gain plot shows _____ gain at low frequency and ______ gain at high frequency.
low, high

The Bode phase plot is
phase in degrees vs frequency in rad/sec

The Bode gain plot is
gain in dB vs frequency in rad/sec

Both Bode plot gain and phase plots are ______ plots.
semilog

Both Bode plot gain and phase axes are
linear scales

In both Bode plot gain and phase axes, _____ axes are different in both plots.
vertical

The Bode plot frequency axis is a
log scale

The Bode plot frequency axis is the
horizontal axis and is the same for both plots

The bottom Bode plot is
system phase vs frequency

The top Bode plot is
system gain vs frequency


A Bode plot is a description of a
linear system

Vout/Vin = R2/R1 is a number (e.g. 3), therefore Vout =
3*Vin

Vout/Vin = R2/R1 is a number and is also called the ____ of the inverting opamp configuration
gain

An ameteur mastake occurs in the audio portion of the video since KVL is mentioned, but KCL should have been stated.
t/f
true

The powersupply ground for the internal opamp circuit (not the noninverting input) is
not connected to the opamp

The noninverting input (positive input port) is grounded in the inverting opamp configuration because
0 volts is desired at the inverting input.

The positive and negative supply voltages in the opamp video
are present but not shown

Negative in the inverting opamp transfer function (R2/R1) means
 both of these
 negative input produces positive output voltage
 positive input produces negative output voltage

The transfer function (Vout/Vin) of an inverting opamp configuration like in the video is
Z2(s)/Z1(s)

The transfer function (Vout/Vin) of the inverting opamp configuration in the video is
R2/R1

What does an opamp with negative feedback do? It makes the voltage at the negative input port the same as the voltage at the positive input port.
true if opamp limits of voltage and current are not exceeded

The idealopamp current (ma) to the signalinput ports is about
0

How many signal output ports does the opamp have?
1

The opamp has ____ power ports (voltagesupply inputs).
2

The opamp has ____ signalinput ports.
2

An opamp with a resitor in negative feedback and another resistor that is connected from the input signal to the negative input port is _____. The positive input port is grounded.
an inverting amplifier

The opamp with its many external configurations is one of the most useful electronic circuits.
t/f
true

A transfer function is a _______domain concept.
complexvaiable s

A transfer function is a ratio of two
sdomain signals (output divided by input)

A transfer function is a linearsystem ____domain I/O relationship for which input and output signals ______.
s, may be unknown

Voltage and current are common examples of ______ in ______ engineering.
signals, electrical

Position, velocity, acceleration, pressure, temperature, humidity are common examples of ____ in ____ engineering
signals, mechanical

Common electrical and mechanical signals
can be expressed in the time domain and the sdomain

The linearsystem transfer function can be determined without knowing input or output signals.
t/f
true

The linearsystem transfer function (TF) can be written without knowing input or output signals, and the TF = output/input.
t/f
true

TF1 and TF2 are in series. TF= combination of both. TF=
TF1*TF2

TF1 and TF2 are in parellel. TF= combination of both. TF=
TF1+TF2

TF1 is the forward TF. TF2 is the feedback TF in a _____ feedback path. The combination of both is TF=
negative, TF1/(1+TF1*TF2)

The TF=(s+a)/(s+b) has
one real pole at s=b

The TF=25/(s^2+6s+25) = 25/( (s+3)^2 + 4^2 ) has
a pair of complex poles at s=3+j4 and s=3j4

The TF=25/(s^2+6s+25) = 25/( (s+3)^2 + 4^2 ) is an example of
a 2ndorder TF

The TF=25/(s^2+6s+25) can also be written as TF=wn^2/(s^2 + 2*zeta*wn*s + wn^2)
t/f
true

In the TF=wn^2/(s^2 + 2*zeta*wn*s + wn^2), wn is
undamped natural frequency in rad/sec

In the TF=wn^2/(s^2 + 2*zeta*wn*s + wn^2), zeta is
damping ratio with no units

In the TF=25/(s^2+6s+25), the undamped natural frequency is _____ rad/sec.
5

In the TF=25/(s^2+6s+25), the damping ratio is
0.6

Damping ratio (zeta) and undamped natural frequency (wn) are ____domain concepts.
s

Specific values of damping ratio (zeta) and undamped natural frequency (wn) ___ related to timedomain concepts.
are


1.1E15/0 is
negative infinity

The calculator reading (1.2E14 to 1.2E15) should be interpreted as
a value of zero due to roundoff at calculator limits

An electrical system with an infinite impedance
draws zero current and may have nonzero voltage across it, and KVL still applies to the loop.

Can a bunch of sine and cosine functions be added to approximate any function that is periodic or not periodic?
yes

Can a bunch of sine and cosine functions be added to make any periodic function?
yes

Can a bunch of sine and cosine functions be added to make a squarewave function?
yes

Can a bunch of sine and cosine functions be added to make a triangle function?
yes

The secondFourierSeries component has a frequence that is ____ the fundamental frequency.
exactly two times

The first Fourier Series component is called the fundamental or first harmonic.
true

The Fourier Series components are also called harmonics.
true

The Fourier Series componenents are all
sinusoids

If the timedomain signal x(t) is not periodic, the X(f) will be the Fourier Transform.
true

If the timedomain signal x(t) is periodic, the X(f) will be the Fourier Series.
true

X(f) is the _____ of the timedomain signal x(t).
Fourier Transform or Fourier Series

The diagram that shows (human voice  electronic signal  EM wave  electronic signal  human voice) introduces
signal processing

Which domain is used when making a Bode plot?
jw domain

Bode Plots deal with ______ input and output signals.
sinusoidal

Time invariant in a LTI system means a time delay of the input signal results in ______ time delay of the output signal.
the same

Which of the following is true about a LTI system?
 both of these
 The signals scale
 Two times the input signal results in two times the output signal.

LTI stands for
Linear and Time Invariant

The delay TF has Bodegain that _____ as frequency increases.
remains constant

The delay has Bodephase that _____ as frequency increases.
decreases

The secondorder lag has Bodegain slope of ____ after the corner
40dB/decade

The integrator has Bodegain slope of ____ over all frequencies.
20 dB/decade

The differentiator has Bodegain slope of ____ over all frequencies.
20dB/decade

The firstorder lag has a Bodegain slope of _____ after the corner.
20dB/decade

The firstorder lead has a Bodegain slope of _____ after the corner.
20dB/decade




G(s) = a/(s^2 + b*s + w1^2)
secondorder lag

(s) = a / ( (s+w1) * (s+w2) )
double lag

G(s) = a/(s+w1)
firstorder lag

G(s) = a*(s+w1)
firstorder lead

G(s)=(s+a)/(s+b), and in Bodeplot form, G(s)=
(a/b)(1+s/a)/(1+s/b)

G(s)=1/(s^2+a*s+b), and in Bodeplot form, G(s)=
(1/b)/(1+a*s/b+s^2/b)

G(s)=1/((s+b)(s+a)), and in Bodeplot form, G(s)=
(1/(a*b))/((1+s/b)(1+s/a))

G(s)=1/(s(s+a)), and in Bodeplot form, G(s)=
(1/a)/(s(1+s/a))

G(s)=1/((s+b)(s+a)), and in Bodeplot form, G(s)=
(1/(a*b))/((1+s/b)(1+s/a))

The system TF must be written in _____ in order to manually sketch asymptotic Bode plots
factoredpolynomial form

The system TF must be written in _____ in order to manually sketch asymptotic Bode plots
system transfer functions

Deviations of asymptotic Bode plots from actual Bode plots occur at the
corners

Asympotic Bode plots are
straightline approximations

A delta function has _____ height and _____ width and _____ area.
infinite, zero, unit

The width of the rectangular pulse (hat function) is
tau

The height of the rectangular pulse (hat function) is
A

The integral from infinity to +infinity of delta(t) is
1

Equations 6,7 and 8 were derived from equation 4, which is _____ the capability of the student of beginning calculus.
well within

Equations 6,7 and 8 were derived from equation
4

Equations 6,7 and 8 have something in common:
no imaginary part

Equation 7 is easily visualized as most like
1/f^2

Equation 8 is the Fourier transform of a
delta function

Equation 7 is the Fourier transform of a
twosided exponential

Equation 6 is a
sinc function

Equation 6 is the Fourier transform of a
pulse or hat function

X_bar_n in equation 3 is ____ and X_bar(f) in equation 4 is a ____.
discrete set, continuous function

X_bar_n in equation 3 and X_bar(f) in equation 4 are both complex
true

The period of the periodic signal in equations 13 is
T

An, Bn, and Xn are _____ in number theoretically, and _____ in practice.
infinite, small

Equation 4 is theoretically interesting, but is not practical because of the infinite limits.
false

Equation 4 is theoretically interesting, but is not practical because of the infinite limits.
x(t)

Which equation shows how to calculate the Fourier transform of a periodic or nonperiodic signal?
4

Which equation shows how to calculate the Fourier transform of a nonperiodic signal?
4

Which equation shows how to calculate the Fourier series complex coefficients for a periodic signal?
3

Which equation shows how to calculate the Fourier series cosine amplitudes for a periodic signal?
1

Which equation shows how to calculate the Fourier series sine amplitudes for a periodic signal?
2

