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Unformatted text preview: EE310 — Spring 2017  Dorr Midterm Exam #2 Name: Red ID: Credit will not be given if work is not shown. 1) What does the Matlab statement Clear all; do? Why is it used at
the beginning of scripts? (4%) 2) Complete the Matlab statement below that converts the variable Freq
to the complex variable 5. Use exact syntax. (4%) S: 3) Use asymptotic analysis to determine Whether the circuit below is
lowpass, highpass, or bandpass. Explain your reasoning. (4%) '" VOul Page 1 4) Show where w = 2.51 is on the scale below. Show your calculations. (6%) WWW—WWW“, 1 0'1 1 0° 1 01 5) Use the information in the Bode plot below to compute the magnitude response (in dB) at 17.0 MHZ (6%) dB
40  25 dB
/— 20 F9019 = 3162 Hz 100 1000 10k 100k 1M 1 OM Frequency (Hz) Page 2 6) Do the following using the circuit below. Note that ZLI, 2L2, ZM, and
ZC are the impedances of the components at the operating frequency. a) Redraw the circuit with dependent sources in series with the coils.
Show the value and the polarity of the sources. (8%) Page 3 Problem 6 (cont) b) Write, BUT DO NOT SOLVE mesh equations for 11, 12, and I3. (12%) Page 4 7) The circuit at terminals A and B is to be represented as a Thevenin source at}
E:
O
a 6 366 F f: ' U 1 23 A
~17: . ‘3 10
3 Ohms H u 2 B
3:“ a) Compute the Thevenin voltage. Express your answer as a phasor.
(1 0%) b) Compute the Thevenin impedance. (10%) Page 5 8) Do the following for the circuit below 5.093 uF a) Compute the resonant frequency in Hz. (4%) b) Find Q. (4%) c) Find the bandwidth in Hz. (4%) (1) Find the current, IR, in the resistor of the circuit as shown above at the
resonant frequency. Justify your answer. (4%) Page 6 9) Determine the transfer function, HOLD) for the Bode plot shown below.
( 1 0%) 1 10 100 1000 10000 100000 Frequency (r15) Page 7 10) Plot the phase response for the transfer ﬁanction shown below. (10%) 180 90 180 P ase
(degrees) Ice(He) (1+ H(s) = 61 jw 10,000 10° 101 102 105 105 Frequency (r15) Page 8 ...
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 Fall '09
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