Soal Dasar-dasar Elektronika

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Ulangan ulang dengan soal pilihan ganda, jumlah soal 40 waktu pengerjaan 40 menit.

• 1.

Kapasitor bertuliskan  2A474J100  mempunyai  nilai ….

• A.

2 Ampere

• B.

474 pF

• C.

470 nF

• D.

100 Volt

C. 470 nF
Explanation
The correct answer is 470 nF. The value of the capacitor is indicated by the code on the capacitor, which in this case is 2A474J100. The code can be decoded as follows: the first digit (2) represents the number of significant figures, the second and third digits (47) represent the value of the capacitor in picofarads (pF), and the fourth digit (4) represents the multiplier (in this case, 10^4). Therefore, the value of the capacitor is 47 x 10^4 pF, which is equal to 470 nF.

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• 2.

Resistor yang mempunyai gelang-gelang : Oranye, Putih , Merah, Emas  nilainya  ….

• A.

2700 â„¦ + 5%

• B.

3900 â„¦ + 5%

• C.

27 Kâ„¦ + 1%

• D.

392 â„¦ + 2%

B. 3900 â„¦ + 5%
Explanation
The answer 3900 â„¦ + 5% is correct because the given resistor has the color bands Orange, White, Red, and Gold. By referring to the color code chart, we can determine that the resistor value is 39 followed by two zeros, which is equal to 3900 â„¦. The gold band represents the tolerance, which is 5%. Therefore, the correct answer is 3900 â„¦ + 5%.

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• 3.

Berapakah nilai kapasitor berikut ini?

• A.

0,068 uF

• B.

600 uF

• C.

0,068 nF

• D.

600 nF

A. 0,068 uF
Explanation
The correct answer is 0,068 uF because it is the value that matches the given options. The other options, 600 uF, 0,068 nF, and 600 nF, do not match the given options and are therefore incorrect.

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• 4.

• A.

Volt

• B.

Ohm

• C.

Ampere

• D.

Explanation
Satuan kapasitor yang digunakan untuk mengukur kapasitansi adalah nano Farad. Kapasitansi adalah kemampuan suatu benda untuk menyimpan muatan listrik. Satuan nano Farad digunakan karena kapasitansi umumnya memiliki nilai yang sangat kecil.

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• 5.

• A.

Volt

• B.

Ohm

• C.

Ampere

• D.

B. Ohm
Explanation
Satuan resistor adalah ohm. Ohm merupakan satuan untuk mengukur resistansi atau hambatan dalam suatu rangkaian listrik. Semakin tinggi nilai resistansi, semakin sulit arus listrik untuk mengalir melalui resistor tersebut. Satuan ini dinamakan berdasarkan nama fisikawan Jerman, Georg Simon Ohm, yang menemukan hukum dasar hubungan antara hambatan listrik, arus, dan tegangan.

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• 6.

Resistor 5,6 Kilo â„¦ nilainya sama dengan  ….

• A.

56000â„¦

• B.

5600â„¦

• C.

560â„¦

• D.

56â„¦

B. 5600â„¦
Explanation
The correct answer is 5600â„¦ because 5.6 kilo-ohms is equal to 5600 ohms. The prefix "kilo" represents a factor of 1000, so when it is applied to the base unit "ohm," it multiplies the value by 1000. Therefore, 5.6 kilo-ohms is equivalent to 5600 ohms.

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• 7.

Kapasitor yang bertuliskan 2n2 nilainya ….

• A.

22000 pF

• B.

2200 pF

• C.

220 pF

• D.

2,2 pF

B. 2200 pF
Explanation
The correct answer is 2200 pF because the question states that the capacitor is labeled as 2n2. In capacitor labeling, the letter "n" represents the decimal point. Therefore, 2n2 translates to 2.2, which means the capacitor has a value of 2.2 picofarads (pF). Among the given options, only 2200 pF matches this value.

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• 8.

Kapasitor 30 nF dan 60 nF dirangkai seri, maka   nilai totalnya adalah ….

• A.

20 nF

• B.

30 nF

• C.

60 nF

• D.

90 nF

A. 20 nF
Explanation
When capacitors are connected in series, the total capacitance is given by the reciprocal of the sum of the reciprocals of the individual capacitances. In this case, the reciprocals of 30 nF and 60 nF are 1/30 and 1/60 respectively. Adding these reciprocals gives 1/30 + 1/60 = 1/20. Taking the reciprocal of this sum gives a total capacitance of 20 nF.

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• 9.

• A.

Input tegangan

• B.

Penyearah

• C.

Filter

• D.

Amplifier

B. Penyearah
Explanation
A diode is a component that is found in the adapter. The function of a diode is to act as a rectifier, which means it converts alternating current (AC) into direct current (DC). This is done by allowing current to flow in only one direction, blocking the flow in the opposite direction. Therefore, a diode is responsible for converting the input voltage from the adapter into a steady DC voltage that can be used by the device it is powering.

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• 10.

Nilai resistor 820 â„¦ + 1 % ; mempunyai warna-warna gelang ….

• A.

Merah; abu-abu; hitam; coklat; coklat

• B.

Abu-abu; merah; hitam; hitam; coklat

• C.

Biru; abu-abu; coklat; emas

• D.

Abu-abu; ungu; merah; emas

B. Abu-abu; merah; hitam; hitam; coklat
Explanation
The given answer, "abu-abu; merah; hitam; hitam; coklat," represents the color code for a resistor with a value of 820 â„¦ and a tolerance of 1%. The first band, "abu-abu," represents the digit 8. The second band, "merah," represents the digit 2. The third band, "hitam," represents the multiplier 10^0, which means no multiplication. The fourth band, "hitam," represents the tolerance of Â±1%. The fifth band, "coklat," represents the temperature coefficient. Therefore, the color code matches the given resistor value and tolerance.

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• 11.

Gambar berikut merupakan  symbol ….

• A.

Kapasitor

• B.

Resistor

• C.

Induktor / lilitan

• D.

Transistor

C. Induktor / lilitan
Explanation
The given image represents an inductor or coil. An inductor is an electronic component that stores energy in the form of a magnetic field when current flows through it. It consists of a coil of wire wound around a core material. The symbol for an inductor is represented by two parallel lines with curved ends.

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• 12.

Elco singkatan dari  ….

• A.

Electric component

• B.

Elektrolit component

• C.

Electronic coefisien

• D.

Elektrolit condensator

D. Elektrolit condensator
Explanation
Elco adalah singkatan dari elektrolit condensator. Elektrolit condensator adalah komponen elektronik yang digunakan untuk menyimpan dan melepaskan energi listrik secara cepat.

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• 13.

Dioda yang berfungsi sebagai penala adalah ....

• A.

Varactor

• B.

Zenner

• C.

LED

• D.

Photo dioda

A. Varactor
Explanation
A varactor diode is a type of diode that is used as a voltage-controlled capacitor. It is commonly used in tuning circuits and frequency modulators. By varying the voltage applied to the varactor diode, the capacitance can be changed, which in turn affects the tuning or modulation of the circuit. Therefore, a varactor diode can be used as a tuning element or a "penala" in Indonesian.

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• 14.

Huruf “K” pada kode nilai kapasitor menunjukkan toleransi nilai kapasitor sebesar ….

• A.

1 %

• B.

5 %

• C.

10 %

• D.

20 %

C. 10 %
Explanation
The letter "K" in the capacitor value code indicates the tolerance of the capacitor value, which is 10%.

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• 15.

Nilai resistor SMD ditunjukkan dengan kode ….

• A.

Angka

• B.

Huruf

• C.

Gelang

• D.

Warna

A. Angka
Explanation
The correct answer is "angka" because in SMD resistors, the value is indicated by a numerical code. The numerical code represents the resistance value and is typically printed on the resistor using a specific coding system. This allows for easy identification and interpretation of the resistor's value.

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• 16.

• A.

102â„¦ + 1%

• B.

1000â„¦ + 5%

• C.

1000â„¦ + 1%

• D.

102â„¦ + 5%

B. 1000â„¦ + 5%
Explanation
The correct answer is 1000â„¦ + 5% because it is the only option that matches the given format of the resistor value followed by a percentage. The other options either have different resistor values or different percentage values, making them incorrect.

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• 17.

Resistor SMD dengan kode 3 angka mempunyai nilai toleransi ….

• A.

1 %

• B.

2 %

• C.

5 %

• D.

10 %

C. 5 %
Explanation
Resistor SMD dengan kode 3 angka memiliki nilai toleransi 5%. This means that the actual resistance of the resistor can deviate by a maximum of 5% from its stated value.

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• 18.

Resistor SMD dengan kode 4 angka mempunyai nilai toleransi ….

• A.

1 %

• B.

2 %

• C.

5 %

• D.

10 %

A. 1 %
Explanation
Resistor SMD dengan kode 4 angka memiliki nilai toleransi 1%. This means that the actual resistance value of the resistor can deviate by a maximum of 1% from the stated value.

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• 19.

Kapasitor yang nilainya dapat diubah yaitu ….

• A.

Varco dan trimpot

• B.

LDR dsn NTC

• C.

Varco dan trimmer

• D.

Trimmer dan trimpot

C. Varco dan trimmer
Explanation
The correct answer is "varco dan trimmer". Capacitors are electronic components that store electrical energy, and their value is usually fixed. However, there are certain types of capacitors called variable capacitors (varco) that have adjustable values. Trimmers, on the other hand, are small adjustable capacitors used for fine-tuning the capacitance in electronic circuits. Therefore, both varco and trimmer capacitors can be adjusted to change their values.

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• 20.

• A.

2512â„¦ + 1%

• B.

25,1 Kâ„¦ + 1%

• C.

2512â„¦ + 5%

• D.

251Kâ„¦ + 5%

B. 25,1 Kâ„¦ + 1%
Explanation
The correct answer is 25,1 Kâ„¦ + 1% because it represents a resistor value of 25.1 kilo-ohms with a tolerance of 1%. The other options either have a different resistor value or a different tolerance percentage, making them incorrect.

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• 21.

• A.

Input tegangan

• B.

Penyearah

• C.

Penurun tegangan

• D.

Filter

B. Penyearah
Explanation

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• 22.

Dioda zenner berfungsi sebagai ….

• A.

Input tegangan

• B.

Penurun tegangan

• C.

Pembatas tegangan

• D.

Penyearahkan tegangan

C. Pembatas tegangan
Explanation
Dioda zenner berfungsi sebagai pembatas tegangan. Dioda zenner dirancang untuk mempertahankan tegangan yang konstan di sepanjang arus yang melewatinya. Ketika tegangan melebihi tegangan zenner yang ditentukan, dioda zenner akan mengalirkan arus yang besar, sehingga mencegah tegangan lebih lanjut meningkat. Dengan demikian, dioda zenner bertindak sebagai pembatas tegangan dengan memastikan bahwa tegangan tidak melebihi batas yang telah ditentukan.

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• 23.

LED merupakan singkatan dari ….

• A.

Light emiting diode

• B.

Layer element drive

• C.

Light element dark

• D.

Liquid extended drive

A. Light emiting diode
Explanation
LED stands for Light Emitting Diode. It is a semiconductor device that emits light when an electric current is passed through it. LEDs are commonly used in various electronic devices and lighting applications due to their energy efficiency, long lifespan, and compact size. The correct answer is "light emitting diode."

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• 24.

• A.

Step-up

• B.

Step-down

• C.

Step-bottom

• D.

Step-top

B. Step-down
Explanation
The correct answer is "step-down". A transformer that is used to lower the voltage is called a step-down transformer. It has more turns on the primary coil than on the secondary coil, which results in a decrease in voltage. This type of transformer is commonly used in electrical power distribution systems to reduce the high voltage from power plants to a lower voltage suitable for residential and commercial use.

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• 25.

Trafo yang berfungsi untuk menaikkan tegangan listrik adalah ….

• A.

Step-up

• B.

Step-down

• C.

Step-bottom

• D.

Step-top

A. Step-up
Explanation
The correct answer is "step-up". A step-up transformer is used to increase the voltage of an electrical circuit. It has more turns in the secondary coil than in the primary coil, which results in a higher output voltage. This type of transformer is commonly used in power distribution systems to transmit electricity over long distances at high voltages, reducing energy losses.

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• 26.

Berikut ini merupakan kaki-kaki transistor FET, kecuali ….

• A.

Kolektor dan emitor

• B.

Drain dan source

• C.

Source dan gate

• D.

Gate dan drain

A. Kolektor dan emitor
Explanation
The correct answer is "kolektor dan emitor". The explanation for this answer is that the given options are the different parts of a FET transistor. The collector and emitter are parts of a bipolar transistor, not a FET transistor. The drain and source, and the gate and drain are the correct pairs of parts in a FET transistor. Therefore, the option "kolektor dan emitor" is the exception in this case.

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• 27.

Bagian speaker berfungsi untuk  ….

• A.

Menguatkan getaran listrik

• B.

• C.

• D.

Menyuplai arus listrik ke semua rangkaian

C. Mengubah getaran listrik menjadi suara
Explanation
The correct answer is "mengubah getaran listrik menjadi suara". This is because the function of the speaker is to convert electrical vibrations into sound. The speaker receives an electrical signal and uses its components to vibrate a diaphragm, which in turn produces sound waves that can be heard.

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• 28.

Bagian tone control berfungsi untuk  ….

• A.

Menguatkan getaran listrik

• B.

Menyuplai arus listrik ke semua rangkaian

• C.

• D.

Explanation
The tone control section is responsible for adjusting the tone or sound quality of the audio signal. It allows the user to increase or decrease specific frequency ranges, such as bass or treble, to achieve the desired sound. By adjusting the tone control, the user can customize the audio output according to their preference, enhancing or reducing certain frequencies to achieve the desired tonal balance.

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• 29.

Berikut ini merupakan jenis-jenis transistor, kecuali ….

• A.

FET

• B.

BJT

• C.

IC

• D.

MOSFET

C. IC
Explanation
The given options FET, BJT, and MOSFET are all types of transistors. However, IC stands for Integrated Circuit, which is not a type of transistor but rather a circuit that contains multiple electronic components such as transistors, resistors, and capacitors on a single chip. Therefore, the correct answer is IC.

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• 30.

• A.

Coulomb

• B.

Ohm

• C.

Ampere

• D.

Joule

A. Coulomb
Explanation
The correct answer is Coulomb because a coulomb is the unit of electric charge, and a capacitor stores electric charge. When a voltage is applied across a capacitor, it accumulates charge, which is measured in coulombs. Therefore, the unit of charge stored in a capacitor is coulomb.

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• 31.

IC singkatan dari ….

• A.

Integrated Circuit

• B.

Internal Circuit

• C.

Integrated Circle

• D.

Intermediate Circuit

A. Integrated Circuit
Explanation
IC is an abbreviation for Integrated Circuit. An integrated circuit is a small electronic device made up of interconnected electronic components such as transistors, resistors, and capacitors. It is used to perform various functions in electronic devices, such as amplification, switching, and memory storage. The integration of multiple components onto a single chip allows for miniaturization and improved performance of electronic devices.

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• 32.

Berikut ini pembagian IC berdasar jumlah komponennya, kecuali ….

• A.

VLSI

• B.

SSI

• C.

MSI

• D.

LPI

D. LPI
Explanation
The given options are VLSI, SSI, MSI, and LPI. These options represent different types of integrated circuits (ICs) based on the number of components they have. VLSI stands for Very Large Scale Integration and refers to ICs with a very large number of components. SSI stands for Small Scale Integration and represents ICs with a small number of components. MSI stands for Medium Scale Integration and represents ICs with a medium number of components. LPI is not a recognized term for IC classification based on component count, making it the exception in the given options.

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• 33.

Berikut ini pembagian IC berdasar jumlah komponennya paling banyak dalam satu keping, yaitu ….

• A.

LSI

• B.

MSI

• C.

SSI

• D.

ULSI

D. ULSI
Explanation
ULSI stands for Ultra Large Scale Integration. It refers to integrated circuits that contain a very large number of components on a single chip. This means that ULSI chips can accommodate a higher number of transistors, resistors, capacitors, and other electronic components compared to LSI, MSI, and SSI. ULSI technology enables the creation of highly complex and powerful electronic devices, such as microprocessors and memory chips, which are used in various applications, including computers, smartphones, and other electronic devices.

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• 34.

Penguat power amplifier yang paling banyak dijumpai di pasaran dan paling banyak dipakai adalah ….

• A.

Penguat kelas A

• B.

Penguat kelas B

• C.

Penguat kelas AB

• D.

Penguat kelas D

C. Penguat kelas AB
Explanation
Penguat power amplifier yang paling banyak dijumpai di pasaran dan paling banyak dipakai adalah penguat kelas AB. Penguat kelas AB merupakan kombinasi antara penguat kelas A dan penguat kelas B. Pada penguat kelas AB, transistor penguat bekerja dalam dua tahap, yaitu pada saat sinyal input kecil, transistor bekerja sebagai penguat kelas A untuk menghasilkan suara yang akurat dan jernih. Namun, saat sinyal input besar, transistor beralih ke mode penguat kelas B untuk memberikan daya yang lebih besar tanpa menghasilkan distorsi yang signifikan. Hal ini membuat penguat kelas AB menjadi pilihan yang ideal untuk aplikasi audio yang membutuhkan keakuratan dan daya output yang tinggi.

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• 35.

Penguat power amplifier dengan bentuk gelombang input sama dengan gelombang output adalah ….

• A.

Penguat kelas A

• B.

Penguat kelas B

• C.

Penguat kelas C

• D.

Penguat kelas D

A. Penguat kelas A
Explanation
A power amplifier with an input waveform that is the same as the output waveform is known as a class A amplifier. In a class A amplifier, the output signal is an amplified replica of the input signal, with both positive and negative halves of the waveform being amplified. This type of amplifier operates in a linear mode, where the output devices are always conducting current, regardless of the input signal level. Class A amplifiers are known for their high linearity and low distortion, but they are less efficient compared to other amplifier classes.

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• 36.

Berikut ini merupakan salah satu bagian dari suatu rangkaian penguat suara, yaitu ….

• A.

Penerima

• B.

Pemancar

• C.

• D.

Pengatur waktu

Explanation
The given answer, "pengatur nada" (tone controller), is correct because it is one of the components of a sound amplifier system. The tone controller is responsible for adjusting the frequency response of the audio signal, allowing the user to control the bass, midrange, and treble levels. This component is crucial in shaping the sound output according to the user's preference and optimizing the audio quality.

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• 37.

• A.

• B.

Regulator

• C.

Transmitter

• D.

Tone control

D. Tone control
Explanation
The correct answer is "tone control." A tone control circuit is responsible for adjusting the bass and treble frequencies in an audio system. It allows the user to enhance or reduce specific frequency ranges to achieve the desired sound quality. This circuit is commonly found in audio receivers and amplifiers to provide flexibility in audio playback.

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• 38.

• A.

Ohm

• B.

Joule

• C.

Ampere

• D.

Coulomb

B. Joule
Explanation
The correct answer is Joule because energy is measured in joules and a capacitor stores energy in the form of an electric field.

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• 39.

Jenis speaker yang mereproduksi sinyal audio frekuensi tinggi adalah ….

• A.

Tweeter

• B.

Woofer

• C.

Full range

• D.

Sub woofer

A. Tweeter
Explanation
A tweeter is a type of speaker that is specifically designed to reproduce high-frequency audio signals. It is responsible for producing clear and crisp high-frequency sounds, such as vocals and cymbals, in a sound system. In contrast, a woofer is designed to reproduce low-frequency sounds, a full-range speaker is capable of reproducing a wide range of frequencies, and a subwoofer is specifically designed to reproduce very low-frequency sounds. Therefore, the correct answer is tweeter.

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• 40.

Resistor dengan 5 gelang warna mempunyai nilai toleransi ....

• A.

1%

• B.

20%

• C.

5%

• D.

10%

A. 1%
Explanation
The correct answer is 1%. In resistor coding, the color bands on a resistor indicate its resistance value and tolerance. A resistor with 5 color bands typically has the first three bands representing the resistance value, the fourth band representing the multiplier, and the fifth band representing the tolerance. A tolerance of 1% means that the actual resistance of the resistor can deviate by up to 1% from the stated resistance value.

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• 41.

Which one do you like?

• A.

Option 1

• B.

Option 2

• C.

Option 3

• D.

Option 4

A. Option 1
Explanation
The given question asks for a personal preference among the options provided. Since the answer is "Option 1," it implies that the person likes or prefers that particular option over the others. However, without any additional context or information, it is not possible to determine the specific reason or basis for the preference.

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• Dec 11, 2012
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