These questions will be taken entirely from Lessons 14-23.  You will find a .pdf file of all Lecture and Lab handouts from these Lessons on the web page.  You can search the entire pdf file for the answers.
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	  <center><font size=+3>CIE-10 Midterm 2</font></center><br><br>  <form name="QuizTest" method=POST action=http://www.rstengineering.com/sierra/quiztest/quiztest-jw.pl><input type=hidden name=student value="">
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<dl>
<dt><b>1: What was the approximate PEAK-TO-PEAK voltage output of the MagLev "wall wart" power supply?</b>
<dd>
<input type=radio name=1 value="12 volts">12 volts<br>
<input type=radio name=1 value="24 volts">24 volts<br>
<input type=radio name=1 value="36 volts">36 volts<br>
<input type=radio name=1 value="48 volts">48 volts<br>
<dt><b>2: The maximum current for the LED in the MagLev project is </b>
<dd>
<input type=radio name=2 value="10 mA">10 mA<br>
<input type=radio name=2 value="20 mA">20 mA<br>
<input type=radio name=2 value="30 mA">30 mA<br>
<input type=radio name=2 value="40 mA">40 mA<br>
<dt><b>3: A 1N5240B is a </b>
<dd>
<input type=radio name=3 value="5 volt zener diode">5 volt zener diode<br>
<input type=radio name=3 value="a silicon switching diode">a silicon switching diode<br>
<input type=radio name=3 value="a bipolar transistor">a bipolar transistor<br>
<input type=radio name=3 value="a 10 volt zener diode">a 10 volt zener diode<br>
<dt><b>4: A 1N5240B is </b>
<dd>
<input type=radio name=4 value="less expensive at Mouser">less expensive at Mouser<br>
<input type=radio name=4 value="less expensive at DigiKey">less expensive at DigiKey<br>
<input type=radio name=4 value="less expensive at Radio Shack">less expensive at Radio Shack<br>
<input type=radio name=4 value="very expensive anywhere">very expensive anywhere<br>
<dt><b>5: The striped end of a diode is</b>
<dd>
<input type=radio name=5 value="the anode">the anode<br>
<input type=radio name=5 value="the collector">the collector<br>
<input type=radio name=5 value="the cathode">the cathode<br>
<input type=radio name=5 value="the base">the base<br>
<dt><b>6: The input to an amplifier is 350 millivolts and the output is 9.2 volts.  The gain is</b>
<dd>
<input type=radio name=6 value="14 dB">14 dB<br>
<input type=radio name=6 value="28 dB">28 dB<br>
<input type=radio name=6 value="31 dB">31 dB<br>
<input type=radio name=6 value="38 dB">38 dB<br>
<dt><b>7: The RC time constant of a 150 kohm resistor and a 33 nanofarad capacitor is </b>
<dd>
<input type=radio name=7 value="2 microseconds">2 microseconds<br>
<input type=radio name=7 value="5 microseconds">5 microseconds<br>
<input type=radio name=7 value="5 milliseconds">5 milliseconds<br>
<input type=radio name=7 value="10 milliseconds">10 milliseconds<br>
<dt><b>8: After how many time constants do we say that the capacitor voltage is equal to the battery voltage?</b>
<dd>
<input type=radio name=8 value="1">1<br>
<input type=radio name=8 value="3">3<br>
<input type=radio name=8 value="5">5<br>
<input type=radio name=8 value="7">7<br>
<dt><b>9: If I have a low pass filter with a 150 kohm resistor and a 33 nanofarad capacitor, the corner frequency will be </b>
<dd>
<input type=radio name=9 value="16 Hz">16 Hz<br>
<input type=radio name=9 value="32 Hz">32 Hz<br>
<input type=radio name=9 value="64 Hz">64 Hz<br>
<input type=radio name=9 value="128 Hz">128 Hz<br>
<dt><b>10: An "octave" is </b>
<dd>
<input type=radio name=10 value="10 musical notes">10 musical notes<br>
<input type=radio name=10 value="10:1 in frequency">10:1 in frequency<br>
<input type=radio name=10 value="6 musical notes">6 musical notes<br>
<input type=radio name=10 value="2:1 in frequency">2:1 in frequency<br>
<dt><b>11: What was the corner frequency of the low pass filter in Lab 15?</b>
<dd>
<input type=radio name=11 value="80 Hz">80 Hz<br>
<input type=radio name=11 value="160 Hz">160 Hz<br>
<input type=radio name=11 value="320 Hz">320 Hz<br>
<input type=radio name=11 value="640 Hz">640 Hz<br>
<dt><b>12: What was the approximate -20 dB frequency of the low pass filter in Lab 15?</b>
<dd>
<input type=radio name=12 value="800 Hz">800 Hz<br>
<input type=radio name=12 value="1600 Hz.">1600 Hz.<br>
<input type=radio name=12 value="3200 Hz">3200 Hz<br>
<input type=radio name=12 value="6400 Hz.">6400 Hz.<br>
<dt><b>13: Phase is measured in _________ and delay is measured in __________.</b>
<dd>
<input type=radio name=13 value="degrees, time">degrees, time<br>
<input type=radio name=13 value="time, degrees">time, degrees<br>
<input type=radio name=13 value="microseconds, radians">microseconds, radians<br>
<input type=radio name=13 value="divisions, squirds">divisions, squirds<br>
<dt><b>14: A single RC low pass filter has __________ degrees of phase shift at the corner frequency</b>
<dd>
<input type=radio name=14 value="0">0<br>
<input type=radio name=14 value="22">22<br>
<input type=radio name=14 value="45">45<br>
<input type=radio name=14 value="135">135<br>
<dt><b>15: The greek letter "omega" (w) is </b>
<dd>
<input type=radio name=15 value="the natural resonance of a circuit">the natural resonance of a circuit<br>
<input type=radio name=15 value="Xc times Xl">Xc times Xl<br>
<input type=radio name=15 value="parallel resonance">parallel resonance<br>
<input type=radio name=15 value="2 * pi * frequency">2 * pi * frequency<br>
<dt><b>16: In a resonant circuit, series impedance is ___________ and parallel impedance is ____________.</b>
<dd>
<input type=radio name=16 value="high, low">high, low<br>
<input type=radio name=16 value="low, high">low, high<br>
<input type=radio name=16 value="inductive">inductive<br>
<input type=radio name=16 value="capacitive">capacitive<br>
<dt><b>17: A 200 microhenry inductor and a 47 picofarad capacitor will resonate </b>
<dd>
<input type=radio name=17 value="1.6 MHz.">1.6 MHz.<br>
<input type=radio name=17 value="800 kHz.">800 kHz.<br>
<input type=radio name=17 value="160 kHz.">160 kHz.<br>
<input type=radio name=17 value="16 MHz.">16 MHz.<br>
<dt><b>18: An unknown inductor and a 100 nanofarad capacitor resonate at 32 kHz.  </b>
<dd>
<input type=radio name=18 value="The capacitor is in series resonance">The capacitor is in series resonance<br>
<input type=radio name=18 value="The inductor is 250 millihenries">The inductor is 250 millihenries<br>
<input type=radio name=18 value="The inductor is a J. W. Miller 5254">The inductor is a J. W. Miller 5254<br>
<input type=radio name=18 value="The question cannot be answered from the data given">The question cannot be answered from the data given<br>
<dt><b>19: In it's simplest form, an NPN transistor can be thought of as </b>
<dd>
<input type=radio name=19 value="two diodes in series nose-to-tail">two diodes in series nose-to-tail<br>
<input type=radio name=19 value="two back to back diodes">two back to back diodes<br>
<input type=radio name=19 value="a diode in series with a  capacitor">a diode in series with a  capacitor<br>
<input type=radio name=19 value="A unipolar silicon crystal">A unipolar silicon crystal<br>
<dt><b>20: To make N type material, you can dope silicon with </b>
<dd>
<input type=radio name=20 value="germanium">germanium<br>
<input type=radio name=20 value="Group 3 elements">Group 3 elements<br>
<input type=radio name=20 value="gallium arsenide">gallium arsenide<br>
<input type=radio name=20 value="Group 5 elements">Group 5 elements<br>
<dt><b>21: In a normally operating bipolar transistor, the B-E junction is ____________ biased and the B-C junction is ___________ biased</b>
<dd>
<input type=radio name=21 value="reverse, forward">reverse, forward<br>
<input type=radio name=21 value="forward, forward">forward, forward<br>
<input type=radio name=21 value="forward, reverse">forward, reverse<br>
<input type=radio name=21 value="reverse, reverse">reverse, reverse<br>
<dt><b>22: Typical beta for a 2N2222 transistor would be</b>
<dd>
<input type=radio name=22 value="5">5<br>
<input type=radio name=22 value="150">150<br>
<input type=radio name=22 value="400">400<br>
<input type=radio name=22 value="1200">1200<br>
<dt><b>23: The collector reverse voltage breakdown in a small signal transistor is around </b>
<dd>
<input type=radio name=23 value="5 volts">5 volts<br>
<input type=radio name=23 value="15 volts">15 volts<br>
<input type=radio name=23 value="50 volts">50 volts<br>
<input type=radio name=23 value="500 volts">500 volts<br>
<dt><b>24: Transistors can act as</b>
<dd>
<input type=radio name=24 value="detectors or antennas">detectors or antennas<br>
<input type=radio name=24 value="inherent voltage regulators">inherent voltage regulators<br>
<input type=radio name=24 value="multipliers and dividers">multipliers and dividers<br>
<input type=radio name=24 value="amplifiers or switches">amplifiers or switches<br>
<dt><b>25: Collector current is 9 mA.  Base current is 56 microamperes.</b>
<dd>
<input type=radio name=25 value="Beta is 160">Beta is 160<br>
<input type=radio name=25 value="Beta is 6.2">Beta is 6.2<br>
<input type=radio name=25 value="Gain is 24 dB">Gain is 24 dB<br>
<input type=radio name=25 value="The transistor is oscillating">The transistor is oscillating<br>
<dt><b>26: In an NPN transistor</b>
<dd>
<input type=radio name=26 value="The collector-base junction is forward biased">The collector-base junction is forward biased<br>
<input type=radio name=26 value="The emitter arrow Never Points iN">The emitter arrow Never Points iN<br>
<input type=radio name=26 value="The base voltage is always 0.6 volts below the emitter">The base voltage is always 0.6 volts below the emitter<br>
<input type=radio name=26 value="The emitter arrow points towards the base">The emitter arrow points towards the base<br>
<dt><b>27: Beta in small signal transistors</b>
<dd>
<input type=radio name=27 value="is constant no matter the collector current">is constant no matter the collector current<br>
<input type=radio name=27 value="peaks somewhere around 1 to 10 mA of collector current">peaks somewhere around 1 to 10 mA of collector current<br>
<input type=radio name=27 value="is the ratio of collector to emitter currents">is the ratio of collector to emitter currents<br>
<input type=radio name=27 value="is measured by reverse biasing the base-emitter junction">is measured by reverse biasing the base-emitter junction<br>
<dt><b>28: A "boffin" is a </b>
<dd>
<input type=radio name=28 value="dc blocking capacitor in a power supply">dc blocking capacitor in a power supply<br>
<input type=radio name=28 value="microwave radar vacuum tube">microwave radar vacuum tube<br>
<input type=radio name=28 value="British radio expert">British radio expert<br>
<input type=radio name=28 value="high gain radio antenna">high gain radio antenna<br>
<dt><b>29: A two-port amplifier</b>
<dd>
<input type=radio name=29 value="has goesintas and goesoutas">has goesintas and goesoutas<br>
<input type=radio name=29 value="does not need a power supply">does not need a power supply<br>
<input type=radio name=29 value="has less output signal than input signal">has less output signal than input signal<br>
<input type=radio name=29 value="is always made from PNP transistors">is always made from PNP transistors<br>
<dt><b>30: A common emitter amplifier has Rc =  470 ohms, Re = 15 ohms, and Ic = 5 mA.  Voltage gain is </b>
<dd>
<input type=radio name=30 value="31">31<br>
<input type=radio name=30 value="cannot be determined from data given">cannot be determined from data given<br>
<input type=radio name=30 value="-30 dB">-30 dB<br>
<input type=radio name=30 value="23">23<br>
<dt><b>31: When using a "bleeder" type base bias scheme in a bipolar transistor amplifier, </b>
<dd>
<input type=radio name=31 value="bleeder configuration is not used in bipolar transistor amplifiers">bleeder configuration is not used in bipolar transistor amplifiers<br>
<input type=radio name=31 value="bleeder resistor current is ten times base current">bleeder resistor current is ten times base current<br>
<input type=radio name=31 value="bleeder current is set to equal base current">bleeder current is set to equal base current<br>
<input type=radio name=31 value="bleeder current is one-tenth the base current">bleeder current is one-tenth the base current<br>
<dt><b>32: Common collector configuration has</b>
<dd>
<input type=radio name=32 value="infinite output resistance">infinite output resistance<br>
<input type=radio name=32 value="low input resistance">low input resistance<br>
<input type=radio name=32 value="high input resistance and low output resistance">high input resistance and low output resistance<br>
<input type=radio name=32 value="good shielding between input and output">good shielding between input and output<br>
<dt><b>33: In lab 18, the base voltage was </b>
<dd>
<input type=radio name=33 value="1.6 volts">1.6 volts<br>
<input type=radio name=33 value="8.4 volts">8.4 volts<br>
<input type=radio name=33 value="10 volts">10 volts<br>
<input type=radio name=33 value="0 volts">0 volts<br>
<dt><b>34: In lab 18, the emitter voltage was </b>
<dd>
<input type=radio name=34 value="10 volts">10 volts<br>
<input type=radio name=34 value="2.2 volts">2.2 volts<br>
<input type=radio name=34 value="1 volt">1 volt<br>
<input type=radio name=34 value="0 volts">0 volts<br>
<dt><b>35: For a 2N4401 (lecture 19) the collector-emitter voltage with a collector current of 1 mA and a base current of 100 microamperes will be (use figure 16 of the curves on page 7)</b>
<dd>
<input type=radio name=35 value="10 volts">10 volts<br>
<input type=radio name=35 value="5 volts">5 volts<br>
<input type=radio name=35 value="1 volt">1 volt<br>
<input type=radio name=35 value="less than 0.1 volts">less than 0.1 volts<br>
<dt><b>36: A "perfect" amplifier would have</b>
<dd>
<input type=radio name=36 value="zero input impedance">zero input impedance<br>
<input type=radio name=36 value="infinite gain">infinite gain<br>
<input type=radio name=36 value="infinite output impedance">infinite output impedance<br>
<input type=radio name=36 value="narrow bandwidth">narrow bandwidth<br>
<dt><b>37: In an op-amp, we stabilize the device by "throwing away gain" by the use of </b>
<dd>
<input type=radio name=37 value="positive feedback">positive feedback<br>
<input type=radio name=37 value="phase inversion">phase inversion<br>
<input type=radio name=37 value="instability modules">instability modules<br>
<input type=radio name=37 value="negative feedback">negative feedback<br>
<dt><b>38: The common LF351 op-amp has an open loop gain of about </b>
<dd>
<input type=radio name=38 value="10">10<br>
<input type=radio name=38 value="50,000">50,000<br>
<input type=radio name=38 value="300,000">300,000<br>
<input type=radio name=38 value="1,000,000">1,000,000<br>
<dt><b>39: Using the configuration shown on page 3 of Lecture 20, with Rf = 1 Mohm, Ri = 330 kohm, and Rx = 100 kohm, the gain from input to output is </b>
<dd>
<input type=radio name=39 value="3">3<br>
<input type=radio name=39 value="4">4<br>
<input type=radio name=39 value="30">30<br>
<input type=radio name=39 value="100">100<br>
<dt><b>40: The (+) input on an op amp is the </b>
<dd>
<input type=radio name=40 value="positive power supply">positive power supply<br>
<input type=radio name=40 value="negative power supply">negative power supply<br>
<input type=radio name=40 value="inverting input">inverting input<br>
<input type=radio name=40 value="noninverting input">noninverting input<br>
<dt><b>41: See the data sheet on the LF351 in Lab 20.  The gain bandwidth is </b>
<dd>
<input type=radio name=41 value="4 MHz.">4 MHz.<br>
<input type=radio name=41 value="10^12 ohms">10^12 ohms<br>
<input type=radio name=41 value="0.02&KPHHASH37;">0.02%<br>
<input type=radio name=41 value="50 Hz.">50 Hz.<br>
<dt><b>42: MOS stands for </b>
<dd>
<input type=radio name=42 value="micro-oscillating-selenium">micro-oscillating-selenium<br>
<input type=radio name=42 value="many-old-socks">many-old-socks<br>
<input type=radio name=42 value="metal-oxide-semiconductor">metal-oxide-semiconductor<br>
<input type=radio name=42 value="more-of the-same">more-of the-same<br>
<dt><b>43: Field-effect transistors may be constructed </b>
<dd>
<input type=radio name=43 value="positive or negative">positive or negative<br>
<input type=radio name=43 value="enhancement or depletion">enhancement or depletion<br>
<input type=radio name=43 value="n-channel or q-channel">n-channel or q-channel<br>
<input type=radio name=43 value="with zero input impedance">with zero input impedance<br>
<dt><b>44: The prime parameter for a FET is </b>
<dd>
<input type=radio name=44 value="beta">beta<br>
<input type=radio name=44 value="reverse breakdown">reverse breakdown<br>
<input type=radio name=44 value="drain voltage">drain voltage<br>
<input type=radio name=44 value="Gm or Gfs">Gm or Gfs<br>
<dt><b>45: The voltage gain of a FET as compared to a corresponding bipolar transistor is </b>
<dd>
<input type=radio name=45 value="about the same">about the same<br>
<input type=radio name=45 value="higher">higher<br>
<input type=radio name=45 value="lower">lower<br>
<input type=radio name=45 value="zero">zero<br>
<dt><b>46: One way of limiting the high frequency response of an op amp is to </b>
<dd>
<input type=radio name=46 value="put a capacitor across the feedback resistor">put a capacitor across the feedback resistor<br>
<input type=radio name=46 value="raise the  supply voltage">raise the  supply voltage<br>
<input type=radio name=46 value="put a load resistor from output to ground">put a load resistor from output to ground<br>
<input type=radio name=46 value="increase the value of the input coupling resistor">increase the value of the input coupling resistor<br>
<dt><b>47: In lab 22, using the resistor values as shown, the gain from input to output is </b>
<dd>
<input type=radio name=47 value="4.7">4.7<br>
<input type=radio name=47 value="21.3">21.3<br>
<input type=radio name=47 value="22.3">22.3<br>
<input type=radio name=47 value="Rf divided by Rload">Rf divided by Rload<br>
<dt><b>48: One way of increasing the opamp power output is by </b>
<dd>
<input type=radio name=48 value="decreasing the opamp power supply voltage">decreasing the opamp power supply voltage<br>
<input type=radio name=48 value="increasing the value of the input coupling capacitor">increasing the value of the input coupling capacitor<br>
<input type=radio name=48 value="using a bipolar emitter follower">using a bipolar emitter follower<br>
<input type=radio name=48 value="decreasing the level of the input signal">decreasing the level of the input signal<br>
<dt><b>49: The equations for determining the resistor values in an opamp bandpass filter are </b>
<dd>
<input type=radio name=49 value="not determined by the gain of the filter">not determined by the gain of the filter<br>
<input type=radio name=49 value="such that exponential math must be used">such that exponential math must be used<br>
<input type=radio name=49 value="relatively simple">relatively simple<br>
<input type=radio name=49 value="relatively  complex">relatively  complex<br>
<dt><b>50: 166 kilohm 5% resistors are made from </b>
<dd>
<input type=radio name=50 value="niobium">niobium<br>
<input type=radio name=50 value="unobtanium">unobtanium<br>
<input type=radio name=50 value="beryllium">beryllium<br>
<input type=radio name=50 value="plutonium">plutonium<br>
</dl>
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