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# Buku tiga soalan (percubaan) radio amatur - dara

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### Buku tiga soalan (percubaan) radio amatur - dara

1. 1. RADIO AMATEUR EXAMINATION PEPERIKSAAN RADIO AMATUR Disediakan oleh : 9W2 TNY DABONG AMATEUR RADIO ASSOCIATION D.A.R.A BOOK THREE BUKU TIGA
6. 6. Koleksi Soalan RAE : Buku Tiga Oleh : 9W2TNY 5/RAE 3 | 9 W 2 T N Y 29 Starting at a positive peak, how many times does a sine wave cross the zero axis in one complete cycle: a) 180 times b) 4 times c) 2 times d) 360 times 30 What is a wave called that abruptly changes back and forth between two voltage levels and remains an equal time at each level? a) A sine wave b) A cosine wave c) a square wave d) a sawtooth wave 31 What would be the most accurate way of determining the RMS voltage of a complex waveform? a) By using a grid dip meter b) By measuring the voltage with a D¶Arsonval meter c) By using an absorption wavemeter d) By measuring the heating effect in a known resistor 32 What are three good electrical conductors a) Copper, gold, mica b) Gold, silver, wood c) gold, silver, aluminium d) copper, aluminium, paper 33 An isolating transformer is used to a) Ensure that faulty equipment connected to it will blow a fuse in the distribution board b) Ensure that no voltage is developed between either output lead and ground c) Ensure that no voltage is developed between the output leads d) Step down the mains voltage to a safe value 34 What device is used to store electrical energy in an electrostatic field: a) A battery b) A transformer c) a capacitor d) an inductor 29. Bermula dengan puncak positif, berapakalikah gelombang µsine¶ melalui paksi kosong bagi melengkapkan putaran a) 180 kali b) 4 kali c) 2 kali d) 360 kali 30. Apakah nama gelombang yang seringkali bergerak sekata di antara dua paras voltan dan kekal serupa pada setiap paras a) Gelombang µsine¶ b) Gelombang µcosine¶ c) Gelombang µsquare¶ d) Gelombang µsawtooth¶ 31. Apakah cara yang paling tepat bagi menentukan voltan RMS yang berbentuk gelombang kompleks ? a) dengan menggunakan µgrip dip meter¶ b) dengan mengukur voltan dengan menggunakan meter D¶Arsonval c) dengan menggunakan meter penyerap gelombang d) Dengan mengukur kesan kepanasan disebabkan oleh perintang yang diketahui. 32. Apakah tiga pengalir elektrik terbaik a) Tembaga , Emas , Mika b) Emas , Perak , Kayu c) Emas , Perak , Aluminium d) Tembaga , Aluminium , Kertas 33. Sebuah µisolating transfomer¶ digunakan untuk ; a) Memastikan alatan rosak yang disambung padanya menyebabkan kerosakan fius pada papan pembahagi. b) Memastikan yang tiada voltan terhasil samada pada kepala keluaran dan pembumian c) Memastikan tiada voltan terhasil diantara kepala keluaran d) Menurunkan voltan utama ke nilai selamat 34. Apakah alat yang menyimpan tenaga elektrik dalam bentuk medan elektrikstatik a) Bateri b) Transformer c) Kapasitor d) Induktor
7. 7. Koleksi Soalan RAE : Buku Tiga Oleh : 9W2TNY 6/RAE 3 | 9 W 2 T N Y 35 What dies a variable resistor or potentiometer do: a) Its resistance changes when AC is applied to it b) It transforms a variable voltage into a constant voltage c) Its resistance changes when its slide or contact is moved d) To create an open circuit when there is too much current in a circuit 36 Which component can amplify a small signal using low voltages: a) PNP transistor b) an electrolytic capacitor c) A variable resistor d) a multiple-cell battery FIGURE N6-1 37 In figure N6-1, which symbol represents a fixed resistor: a) Symbol 2 b) Symbol 3 c) Symbol 4 d) Symbol 5 38 In figure N6-1, which symbol represents a fuse a) Symbol 1 b) Symbol 3 c) Symbol 5 d) Symbol 7 39 In figure N6-1, which symbol represents a single- cell battery a) Symbol 7 b) Symbol 5 c) Symbol 1 d) Symbol 4 40 In figure N6-1, which symbol represents an earth ground: a) Symbol 2 b) Symbol 5 c) Symbol 6 d) Symbol 8 35. Apakah kegunaan perintang boleh ubah atau µpontimeter¶ a) Rintangan berubah bila AC disalurkan padanya b) Ia menukar pelbagai voltan ke voltan yang konstan c) Rintangan berubah bila pelaras digerakkan d) Menghasilkan litar terbuka bila arus terlalu tinggi di dalam litar 36. Komponen yang mana membolehkan µsignal¶ kecil dikuatkan bila arus rendah digunakan a) PNP transitor b) Kapasitor Elektrolitik c) Perintang boleh ubah d) Bateri Multi-sel GAMBARAJAH N6-1 37. Dalam gambarajah N6-1,Simbol mana mewakili perintang tetap; a) Simbol 2 b) Simbol 3 c) Simbol 4 d) Simbol 5 38. Dalam gambarajah N6-1,Simbol mana mewakili fius; a) Simbol 2 b) Simbol 3 c) Simbol 5 d) Simbol 7 39. Dalam gambarajah N6-1,Simbol mana mewakili bateri satu sel; a) Simbol 7 b) Simbol 5 c) Simbol 1 d) Simbol 4 40. Dalam gambarajah N6-1,Simbol mana mewakili pembumian; a) Simbol 2 b) Simbol 5 c) Simbol 6 d) Simbol 8 1 2 3 4 5 7 8 6
8. 8. Koleksi Soalan RAE : Buku Tiga Oleh : 9W2TNY 7/RAE 3 | 9 W 2 T N Y FIGURE N6-1 41 In figure N6-1, which symbol represents an antenna a) Symbol 2 b) Symbol 3 c) Symbol 6 d) Symbol 7 42 In figure N6-2, which symbol represents a single- pole, single-throw switch FIGURE N6-2 a) Symbol 1 b) Symbol 2 c) Symbol 3 d) Symbol 4 43 What does a capacitor do: a) It stores energy electrochemically and opposes a change in current b) It stores energy electrostatically and opposes a change in voltage c) It stores energy electromagnetically and opposes a change in current d) It stores energy electromechanically and opposes a change in voltage 44 The mains transformer in a transmitter is fitted with an internal screen. To minimize the possibility of introducing mains-borne interference it should be connected to: a) the chassis b) the VFO output c) the live side of the mains d) left floating GAMBARAJAH N6-1 41. Dalam gambarah N6-1, Simbol mana yang mewakili antenna a) Simbol 2 b) Simbol 3 c) Simbol 6 d) Simbol 7 42. Dalam gambarajah N6-2, symbol yang mewakili suis satu arah,satu hala adalah GAMBARAJAH N6-2 a) Simbol 1 b) Simbol 2 c) Simbol 3 d) Simbol 4 43. Apakah tugas kapasitor ; a) Ia menyimpan tenaga elektrokimia dan menukarkan kepada arus b) Ia menyimpan tenaga elektrostatik dan menukarkan kepada arus c) Ia menyimpan tenaga elektromagnet dan menukarkan kepada arus d) Ia menyimpan tenaga elektromekanikal dan menukarkan kepada arus 44. Dalam alat pemancar, penukar (transformer) utama dipasang pada skrin dalaman. Bagi meminimumkan kebarangkalian bunyi bising yang mengganggu, ia sepatutnya di sambungkan ke; a) Kerangka b) Puncakeluar VFO c) Bahagian µhidup¶ papan utama d) Disebelah bucu kiri 1 2 3 4 1 2 3 4 5 7 8 6