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<h3>1. 코일예 60[Hz], 10[V]의 교류전압을 가했더니 1[A]의 전류가 흐른다면 이 코일의 인덕턴스는?</h3><br/>

    <div >&nbsp;&nbsp;A. 약 8.3[mH]</div>
    <div >&nbsp;&nbsp;B. 13.3[mH]</div>
    <div >&nbsp;&nbsp;C. 26.5[mH</div>
    <div >&nbsp;&nbsp;D. 62.3[mH]</div>
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<input type="hidden" id="correct_answer1" value="C">
<input type="hidden" id="explaination1" value="">

    <div id="answer_div1" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(1);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id2" value="631">
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<h3>2. 2[kW]의 송신기 출력을 전송할 때, 송신출력이 3[dB] 증가하였다면 출력은 몇 kw인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 3KW</div>
    <div >&nbsp;&nbsp;B. 4KW</div>
    <div >&nbsp;&nbsp;C. 6KW</div>
    <div >&nbsp;&nbsp;D. 8KW</div>
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<input type="hidden" id="correct_answer2" value="B">
<input type="hidden" id="explaination2" value="">

    <div id="answer_div2" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(2);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id3" value="634">
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<h3>3. AM송신기에서 안테나 결합회로의 동조회로의 Q가 무부하시 100 이고, 부하시에 20 이라 할 때 공진효율을 맞게 계산한 것은?</h3><br/>

    <div >&nbsp;&nbsp;A. 0.1</div>
    <div >&nbsp;&nbsp;B. 0.4</div>
    <div >&nbsp;&nbsp;C. 0.5</div>
    <div >&nbsp;&nbsp;D. 0.8</div>
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<input type="hidden" id="correct_answer3" value="D">
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    <div id="answer_div3" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(3);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id4" value="636">
        <input type="hidden" id="q_type4" value="mcq">
         
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<h3>4. 전압 30[V]를 측정하였더니 전압계가 30.6[V] 를 지시하였다. 이 전압계의 오차율은 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 2%</div>
    <div >&nbsp;&nbsp;B. 0.2%</div>
    <div >&nbsp;&nbsp;C. 0.6%</div>
    <div >&nbsp;&nbsp;D. 6%</div>
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<input type="hidden" id="correct_answer4" value="A">
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    <div id="answer_div4" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(4);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id5" value="638">
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<h3>5. 송신안테나로부터 2[km]에서 측정한 전계강도가 50이였다. 5[km]거리에서의 전계강도는 몇 인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 20</div>
    <div >&nbsp;&nbsp;B. 30</div>
    <div >&nbsp;&nbsp;C. 200</div>
    <div >&nbsp;&nbsp;D. 400</div>
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<input type="hidden" id="correct_answer5" value="A">
<input type="hidden" id="explaination5" value="">

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         <input type="hidden" id="q_id6" value="642">
        <input type="hidden" id="q_type6" value="mcq">
         
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<h3>6. 정류회로의 양단평균전압이 250[V]이고 맥동를이 3.6[%]라고 한다. 교류분은 몇[V]인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 4V</div>
    <div >&nbsp;&nbsp;B. 6V</div>
    <div >&nbsp;&nbsp;C. 9V</div>
    <div >&nbsp;&nbsp;D. 12V</div>
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<input type="hidden" id="correct_answer6" value="C">
<input type="hidden" id="explaination6" value="">

    <div id="answer_div6" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(6);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id7" value="644">
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<h3>7. 출력 100[ W] 의 SSB 송신기에서 무변조시의 공중선전력은 몇 [ W]인가?(단. 전파형식은 J3E이다)</h3><br/>

    <div >&nbsp;&nbsp;A. 100[W]</div>
    <div >&nbsp;&nbsp;B. 100/루트2[W]</div>
    <div >&nbsp;&nbsp;C. 50[W]</div>
    <div >&nbsp;&nbsp;D. 0[W]</div>
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<input type="hidden" id="correct_answer7" value="D">
<input type="hidden" id="explaination7" value="">

    <div id="answer_div7" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(7);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id8" value="650">
        <input type="hidden" id="q_type8" value="mcq">
         
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<h3>8. 어떤 정류기의 부하양단 평균전압이 2.000[V] 이고 맥동률은 2[%]라 한다. 교류분은 몇 [V] 포참하는가?</h3><br/>

    <div >&nbsp;&nbsp;A. 40[V]</div>
    <div >&nbsp;&nbsp;B. 4[V]</div>
    <div >&nbsp;&nbsp;C. 0.4[V]</div>
    <div >&nbsp;&nbsp;D. 80[V]</div>
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<input type="hidden" id="correct_answer8" value="A">
<input type="hidden" id="explaination8" value="">

    <div id="answer_div8" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(8);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id9" value="661">
        <input type="hidden" id="q_type9" value="mcq">
         
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<h3>9. 2【 kW]의 송신기 출력을 전송시 송신출력이 3[dB] 증가하였다고 한다. 이때 송신기의 출력은 약 몇 KW인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 3 [kW]</div>
    <div >&nbsp;&nbsp;B. 4 [kW]</div>
    <div >&nbsp;&nbsp;C. 6 [kW]</div>
    <div >&nbsp;&nbsp;D. 8 [kW]</div>
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<input type="hidden" id="correct_answer9" value="B">
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    <div id="answer_div9" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(9);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id10" value="665">
        <input type="hidden" id="q_type10" value="mcq">
         
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<h3>10. 6[V】. 500【mA /H】 인 니켈카드늄《Ni-cd) 을 중전시키려 한다. 충전 전류g 100【mA】 로 흘리면 충전시간은 얼마나 걸리는가?</h3><br/>

    <div >&nbsp;&nbsp;A. 약 7시간</div>
    <div >&nbsp;&nbsp;B. 약 2시간</div>
    <div >&nbsp;&nbsp;C. 약 4시간</div>
    <div >&nbsp;&nbsp;D. 약 10시간</div>
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<input type="hidden" id="correct_answer10" value="A">
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    <div id="answer_div10" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(10);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id11" value="667">
        <input type="hidden" id="q_type11" value="mcq">
         
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<h3>11. 100(%] 변조시 평균전력이 150【 W ]인 진폭변조송신기의 변조도 를 30【%】 로 했을 때의 출력은 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 150[ W]</div>
    <div >&nbsp;&nbsp;B. 124.5[ W]</div>
    <div >&nbsp;&nbsp;C. 104.5[ W]</div>
    <div >&nbsp;&nbsp;D. 100.5[ W]</div>
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<input type="hidden" id="correct_answer11" value="C">
<input type="hidden" id="explaination11" value="">

    <div id="answer_div11" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(11);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id12" value="668">
        <input type="hidden" id="q_type12" value="mcq">
         
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<h3>12. 송신주파수가 7,050【kHz】 이고 출력 임피던스가 50[Ω ]인 송신기를 20[m] 떨어져 있는 안테나와 동축케이볼로 접속할 때 가장 일맞은 동축케이S{Coaxial Cable》 의 증류와 길이는?</h3><br/>

    <div >&nbsp;&nbsp;A. RG-58 20[m]</div>
    <div >&nbsp;&nbsp;B. RG-59. 40[m]</div>
    <div >&nbsp;&nbsp;C. RG-8. 26[m]</div>
    <div >&nbsp;&nbsp;D. RG-11. 28[m]</div>
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<input type="hidden" id="correct_answer12" value="C">
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    <div id="answer_div12" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(12);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id13" value="706">
        <input type="hidden" id="q_type13" value="mcq">
         
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<h3>13. 증폭기의 출력 파형을 측정한 결과 기본파 진폭 100[V]. 제2고조파 진폭 4[V] 제3고조파 진폭 3[V]이었다. 왜율은 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 0.5%</div>
    <div >&nbsp;&nbsp;B. 5 % </div>
    <div >&nbsp;&nbsp;C. 10 %</div>
    <div >&nbsp;&nbsp;D. 25 %</div>
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<input type="hidden" id="correct_answer13" value="B">
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    <div id="answer_div13" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(13);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id14" value="708">
        <input type="hidden" id="q_type14" value="mcq">
         
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<h3>14. 어떤 도체에 5초 동안 100[C]의 전기량이 이동할 때에 흐르는 전류는 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 0.05[A]</div>
    <div >&nbsp;&nbsp;B. 20[A]</div>
    <div >&nbsp;&nbsp;C. 50[A]</div>
    <div >&nbsp;&nbsp;D. 500[A]</div>
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<input type="hidden" id="correct_answer14" value="B">
<input type="hidden" id="explaination14" value="">

    <div id="answer_div14" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(14);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id15" value="722">
        <input type="hidden" id="q_type15" value="mcq">
         
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<h3>15. 2[Ω ]의 저항에800[W]의 전력을소비시키려면얼마의전류를흘려야하는가?</h3><br/>

    <div >&nbsp;&nbsp;A. 2[A]</div>
    <div >&nbsp;&nbsp;B.  20[A]</div>
    <div >&nbsp;&nbsp;C. 40[A]</div>
    <div >&nbsp;&nbsp;D. 400[A]</div>
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<input type="hidden" id="correct_answer15" value="B">
<input type="hidden" id="explaination15" value="">

    <div id="answer_div15" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(15);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id16" value="726">
        <input type="hidden" id="q_type16" value="mcq">
         
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<h3>16. 오실로스코프로 변조파형을 측정한 결과 최대진폭이 3눈금, 최소진폭이 1눈금일 경우 변조도는?</h3><br/>

    <div >&nbsp;&nbsp;A. 66[%]</div>
    <div >&nbsp;&nbsp;B.  100[%]</div>
    <div >&nbsp;&nbsp;C. 50[%]</div>
    <div >&nbsp;&nbsp;D. 75[%]</div>
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<input type="hidden" id="correct_answer16" value="C">
<input type="hidden" id="explaination16" value="">

    <div id="answer_div16" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(16);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id17" value="732">
        <input type="hidden" id="q_type17" value="mcq">
         
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<h3>17. FM에서 최대주파수 편이가 5[kHz]이고, 변조주파수 편이가 2.5[kHz] 일 때 주파수 대역폭은?</h3><br/>

    <div >&nbsp;&nbsp;A. 7.5 [kHz]</div>
    <div >&nbsp;&nbsp;B. 10 [kHz]</div>
    <div >&nbsp;&nbsp;C. 12.5 [kHz]</div>
    <div >&nbsp;&nbsp;D. 15 [kHz]</div>
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<input type="hidden" id="correct_answer17" value="D">
<input type="hidden" id="explaination17" value="">

    <div id="answer_div17" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(17);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id18" value="738">
        <input type="hidden" id="q_type18" value="mcq">
         
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<h3>18. 도선의 길이 관=10[m], 단면적 S=0.5[m2], 고유저항 p=0.2[Qm] 일 때 도체의 저항은 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 2 [Ω ]</div>
    <div >&nbsp;&nbsp;B. 4 [Ω ]</div>
    <div >&nbsp;&nbsp;C. 20 [Ω ]</div>
    <div >&nbsp;&nbsp;D. 40 [Ω ]</div>
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<input type="hidden" id="correct_answer18" value="B">
<input type="hidden" id="explaination18" value="">

    <div id="answer_div18" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(18);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id19" value="746">
        <input type="hidden" id="q_type19" value="mcq">
         
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<h3>19. 표준신호발생기의 출력 단자를 개방했을 때 출력이 40[dB]이면 단자전압은 몇 [V]인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 60[uV]</div>
    <div >&nbsp;&nbsp;B. 100[uV]</div>
    <div >&nbsp;&nbsp;C. 150[uV]</div>
    <div >&nbsp;&nbsp;D. 200[uV]</div>
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<input type="hidden" id="correct_answer19" value="B">
<input type="hidden" id="explaination19" value="">

    <div id="answer_div19" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(19);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id20" value="751">
        <input type="hidden" id="q_type20" value="mcq">
         
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<h3>20. 전압이 100[v]이고, 전류가 2[mA] 때 전력[w]은?</h3><br/>

    <div >&nbsp;&nbsp;A. 0.2[w]</div>
    <div >&nbsp;&nbsp;B. 50[w]</div>
    <div >&nbsp;&nbsp;C. 100[w]</div>
    <div >&nbsp;&nbsp;D. 200[w]</div>
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<input type="hidden" id="correct_answer20" value="A">
<input type="hidden" id="explaination20" value="">

    <div id="answer_div20" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(20);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id21" value="760">
        <input type="hidden" id="q_type21" value="mcq">
         
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<h3>21. 100[V], 500[w]의 전열기를 80[V]로 사용하였을 때, 소비전력은 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 240[w]</div>
    <div >&nbsp;&nbsp;B. 320[w]</div>
    <div >&nbsp;&nbsp;C. 400[w]</div>
    <div >&nbsp;&nbsp;D. 480[w]</div>
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<input type="hidden" id="correct_answer21" value="C">
<input type="hidden" id="explaination21" value="">

    <div id="answer_div21" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(21);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id22" value="761">
        <input type="hidden" id="q_type22" value="mcq">
         
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<h3>22. 전압 증폭도가 각각 10배, 100배인 저주파증폭기를 직력 접속한 경우 종합 증폭도는?</h3><br/>

    <div >&nbsp;&nbsp;A. 10[dB]</div>
    <div >&nbsp;&nbsp;B. 20[dB]</div>
    <div >&nbsp;&nbsp;C. 60[dB]</div>
    <div >&nbsp;&nbsp;D. 80[dB]</div>
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<input type="hidden" id="correct_answer22" value="C">
<input type="hidden" id="explaination22" value="">

    <div id="answer_div22" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(22);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id23" value="767">
        <input type="hidden" id="q_type23" value="mcq">
         
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<h3>23. 15[MHz]의 전파의 파장을 측정하는 경우 레헤르선(lecher Wire)의 길이는 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 1[m]</div>
    <div >&nbsp;&nbsp;B. 2[m]</div>
    <div >&nbsp;&nbsp;C. 10[m]</div>
    <div >&nbsp;&nbsp;D. 20[m]</div>
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<input type="hidden" id="correct_answer23" value="C">
<input type="hidden" id="explaination23" value="">

    <div id="answer_div23" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(23);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id24" value="786">
        <input type="hidden" id="q_type24" value="mcq">
         
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<h3>24. 무부하시 Q0=200, 부하시 Ql=50일 때, 송신기익 공진효율은?</h3><br/>

    <div >&nbsp;&nbsp;A. 15 [%]</div>
    <div >&nbsp;&nbsp;B. 45 [%]</div>
    <div >&nbsp;&nbsp;C. 55 [%]</div>
    <div >&nbsp;&nbsp;D. 75 [%]</div>
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<input type="hidden" id="correct_answer24" value="D">
<input type="hidden" id="explaination24" value="">

    <div id="answer_div24" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(24);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id25" value="788">
        <input type="hidden" id="q_type25" value="mcq">
         
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<h3>25. 600[Ω]의 저항에 1[mW]의 전력이 걸릴 때 0[dB]의 전력일 경우, 10[dB]의 전력은 몇 [mW]인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 0.1[mW]</div>
    <div >&nbsp;&nbsp;B. 1[mW]</div>
    <div >&nbsp;&nbsp;C. 10[mW]</div>
    <div >&nbsp;&nbsp;D. 100[mW]</div>
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<input type="hidden" id="correct_answer25" value="C">
<input type="hidden" id="explaination25" value="">

    <div id="answer_div25" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(25);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id26" value="806">
        <input type="hidden" id="q_type26" value="mcq">
         
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<h3>26. 권선비가 2:1인 변압기를 사용하여 교류 220[V]의 입력을 가해서 전파 정류시키면 출력전압의 평균값은 대략 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 50[V]</div>
    <div >&nbsp;&nbsp;B. 100[V]</div>
    <div >&nbsp;&nbsp;C. 155[V]</div>
    <div >&nbsp;&nbsp;D. 311[V]</div>
<br/>

<input type="hidden" id="correct_answer26" value="B">
<input type="hidden" id="explaination26" value="">

    <div id="answer_div26" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(26);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id27" value="812">
        <input type="hidden" id="q_type27" value="mcq">
         
<br/>
<h3>27. 주파수 60[MHz]를 측정하는데 측정값이 62.5[MHz]이다. 이때의 오차 백분율은?</h3><br/>

    <div >&nbsp;&nbsp;A. -4.아%]</div>
    <div >&nbsp;&nbsp;B.  4.0[%]</div>
    <div >&nbsp;&nbsp;C. -4.17[%]</div>
    <div >&nbsp;&nbsp;D. 4.17[%]</div>
<br/>

<input type="hidden" id="correct_answer27" value="D">
<input type="hidden" id="explaination27" value="">

    <div id="answer_div27" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(27);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id28" value="817">
        <input type="hidden" id="q_type28" value="mcq">
         
<br/>
<h3>28. 슈퍼헤테로다인 수신기에서 중간 주파수가 410[kHz], 수신 주파수가 770[kHz]일 때의 영상주파수는 얼마인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 1620[kHz]</div>
    <div >&nbsp;&nbsp;B. 1590[kHz]</div>
    <div >&nbsp;&nbsp;C. 1470[kHz]</div>
    <div >&nbsp;&nbsp;D. 1350[kHz]</div>
<br/>

<input type="hidden" id="correct_answer28" value="B">
<input type="hidden" id="explaination28" value="">

    <div id="answer_div28" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(28);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id29" value="827">
        <input type="hidden" id="q_type29" value="mcq">
         
<br/>
<h3>29. 어느 수신기의 입력에 50 [uV] 의 전압을 가했더니 출력전압이 500[mV] 이었다 이때 수신기의 감도는 몇 [dB]인가 ?</h3><br/>

    <div >&nbsp;&nbsp;A. 40[dB]</div>
    <div >&nbsp;&nbsp;B. 60[dB]</div>
    <div >&nbsp;&nbsp;C. 80[dB]</div>
    <div >&nbsp;&nbsp;D. 100[dB]</div>
<br/>

<input type="hidden" id="correct_answer29" value="C">
<input type="hidden" id="explaination29" value="">

    <div id="answer_div29" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(29);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id30" value="835">
        <input type="hidden" id="q_type30" value="mcq">
         
<br/>
<h3>30. 주파수가 100[MHz]인 반파장 다이폴 안테나의 실효길이는?</h3><br/>

    <div >&nbsp;&nbsp;A. 약 60[cm]</div>
    <div >&nbsp;&nbsp;B. 약 70[cm]</div>
    <div >&nbsp;&nbsp;C. 약 85[cm]</div>
    <div >&nbsp;&nbsp;D. 약 95[cm]</div>
<br/>

<input type="hidden" id="correct_answer30" value="D">
<input type="hidden" id="explaination30" value="">

    <div id="answer_div30" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(30);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id31" value="838">
        <input type="hidden" id="q_type31" value="mcq">
         
<br/>
<h3>31. 방사저항이 45[Ω] 이고 손실저항이 15 [Ω] 이라고 할때 이 공중선의 방사효율은 몇 [%]인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 65 %</div>
    <div >&nbsp;&nbsp;B. 75 % </div>
    <div >&nbsp;&nbsp;C. 85% </div>
    <div >&nbsp;&nbsp;D. 90%</div>
<br/>

<input type="hidden" id="correct_answer31" value="B">
<input type="hidden" id="explaination31" value="">

    <div id="answer_div31" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(31);">&nbsp;&nbsp;Show Answer</div><hr>
         <input type="hidden" id="q_id32" value="840">
        <input type="hidden" id="q_type32" value="mcq">
         
<br/>
<h3>32. 저항 R에 1 분간 100[V]의 기전력을 가했을 때, 120(0[c]의 전하가 이동되었다고 한다. 이 저항 R의 값은 몇 [Q]인가?</h3><br/>

    <div >&nbsp;&nbsp;A. 5</div>
    <div >&nbsp;&nbsp;B. 10</div>
    <div >&nbsp;&nbsp;C. 12</div>
    <div >&nbsp;&nbsp;D. 20</div>
<br/>

<input type="hidden" id="correct_answer32" value="A">
<input type="hidden" id="explaination32" value="">

    <div id="answer_div32" style="text-color: #000000; border: #ececa3 ; background: #ececa3" onclick="quexp_show_answer_button(32);">&nbsp;&nbsp;Show Answer</div><hr>
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<input type="hidden" id="quiz_uid" value="0">
<input type="hidden" id="quiz_type" value="Exercise">
<input type="hidden" id="quiz_time" value="0">
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