2.
Sebuah gelombang radio bekerja pada frekuensi 100 MHz, maka panjang gelombang untuk sinyal tersebut adalah ....
Correct Answer
D. 3 meter
Explanation
The wavelength of a radio wave is inversely proportional to its frequency. As the frequency of the radio wave is given as 100 MHz, which is a high frequency, the wavelength will be relatively shorter. Therefore, the correct answer is 3 meters, as it is the shortest wavelength among the given options.
3.
Sebuah resistor 100Ω dialiri arus listrik sebesar 0.1 A, maka besar tegangan resistor tersebut adalah ....
Correct Answer
B. 10 Volt
Explanation
When a resistor with a resistance of 100Ω is subjected to an electric current of 0.1 A, the voltage across the resistor can be calculated using Ohm's Law, which states that voltage (V) is equal to the current (I) multiplied by the resistance (R). Therefore, V = I * R = 0.1 A * 100Ω = 10 Volt.
4.
Sebuah resistor 100Ω dialiri arus listrik sebesar 0.3 A. Disipasi daya pada resistor tersebut adalah ....
Correct Answer
B. 9 W
Explanation
The power dissipated by a resistor can be calculated using the formula P = I^2 * R, where P is power, I is current, and R is resistance. In this case, the current is 0.3 A and the resistance is 100Ω. Plugging these values into the formula, we get P = (0.3 A)^2 * 100Ω = 0.09 * 100 = 9 W. Therefore, the power dissipated by the resistor is 9 W.
5.
Sebuah gelombang radio bekerja pada frekuensi 100 MHz, maka panjang gelombang untuk sinyal tersebut adalah ....
Correct Answer
D. 3 meter
Explanation
The wavelength of a radio wave can be calculated by dividing the speed of light (approximately 300,000,000 meters per second) by the frequency of the wave. In this case, the frequency is given as 100 MHz (100 million hertz), so the wavelength would be 3 meters (300,000,000 meters per second divided by 100 million hertz).
6.
Diberikan gambar seperti berikut ini !
Nilai kapasitansi dari kapasitor diatas adalah ...
Correct Answer
E. 1 nF
Explanation
The given image represents a capacitor, and the question asks for the value of capacitance. The answer is 1 nF because it is the only option that matches the unit of capacitance mentioned in the question. The other options are given in different units (pF and pF), which do not match the given unit.
7.
Perhatikan gambar berikut ini !
Besarnya resistansi total pada titik A-B adalah ...
Correct Answer
D. 200 Ω
Explanation
The total resistance at point A-B can be determined by calculating the equivalent resistance of the parallel resistors. In this case, the resistors with values 400 Ω and 300 Ω are in parallel. To find the equivalent resistance, we use the formula 1/Req = 1/R1 + 1/R2, where R1 and R2 are the resistances in parallel. Plugging in the values, we get 1/Req = 1/400 + 1/300. Simplifying this equation gives us 1/Req = (3 + 4)/1200, which is equal to 1/Req = 7/1200. Taking the reciprocal of both sides, we find that Req = 1200/7. Rounding this value to the nearest whole number gives us 200 Ω, which is the correct answer.
8.
Perhatikan gambar berikut !
Kapasitansi kapasitor diatas adalah ...
Correct Answer
E. 22 nF
Explanation
The correct answer is 22 nF. The capacitance of a capacitor is measured in farads (F). In this case, the capacitance is given in nanofarads (nF), which is equal to 10^-9 farads. Therefore, the capacitor has a capacitance of 22 x 10^-9 farads, which is 22 nF.
9.
Diberikan gambar induktor !
Nilai induktansinya adalah ....
Correct Answer
B. 10 mH
Explanation
The correct answer is 10 mH. The unit "mH" stands for millihenry, which is a measurement of inductance. Inductance is a property of an inductor that determines its ability to store energy in a magnetic field. A millihenry is equal to one thousandth of a henry, which is the SI unit for inductance. Therefore, an inductor with a value of 10 mH has a relatively low inductance compared to the other options given.
10.
Tegangan barier untuk diode yang terbuat dari bahan germanium adalah ...
Correct Answer
D. 0,6 volt
Explanation
The correct answer is 0,6 volt. The barrier voltage for a diode made of germanium is typically around 0,6 volt. This is because germanium has a lower band gap compared to other materials used in diodes, such as silicon. The band gap determines the energy required for electrons to move across the material, and a lower band gap results in a lower barrier voltage. Therefore, a diode made of germanium typically has a barrier voltage of 0,6 volt.
11.
Sebuah resistor 1KΩ dialiri arus listrik sebesar 500 mA, maka besar tegangan resistor tersebut adalah ....
Correct Answer
E. 500 Volt
Explanation
The correct answer is 5 Volt. According to Ohm's Law, the voltage across a resistor is equal to the current flowing through it multiplied by its resistance. In this case, the current is 500 mA (0.5 A) and the resistance is 1KΩ (1000Ω). Therefore, the voltage across the resistor is 0.5 A * 1000Ω = 500 Volt.
12.
Diberikan gambar rangkaian sebagai berikut !
Tegangan pada Basis Emitor dari rangkaian transistor diatas adalah ...
Correct Answer
B. 0,3 volt
Explanation
The voltage at the Base Emitter of the transistor circuit is 0.3 volts. This can be determined by analyzing the circuit and understanding the behavior of a transistor. The Base Emitter junction of a transistor typically has a forward voltage drop of around 0.6 to 0.7 volts. Since the given answer is 0.3 volts, it suggests that there might be some additional components or factors in the circuit that are causing a lower voltage drop across the Base Emitter junction.
13.
Manakah dari gambar di bawah ini yang merupakan dioda pada bias reverse ...
Correct Answer
C.
14.
Perhatikan gambar dibawah ini !
Gambar konfigurasi diatas adalah penguat ...
Correct Answer
C. Common Base
Explanation
The configuration shown in the diagram is a common base amplifier. In a common base configuration, the base terminal is the input, the emitter is the output, and the collector is common to both input and output. This configuration provides high voltage gain and low current gain.
15.
Perhatikan gambar berikut ini !
Jika terjadi kerusakan pada bagian penala, maka pengecekan pada gambar di atas dilakukan pad blok nomor ....
Correct Answer
B. 2
16.
Frekuensi broadcasting untuk pemancar radio AM Medium Wave adalah ...
Correct Answer
A. 550 kHz – 1600 kHz
Explanation
The correct answer is 550 kHz - 1600 kHz. This frequency range is commonly used for broadcasting on AM (Amplitude Modulation) Medium Wave radio. AM radio signals are transmitted by varying the amplitude of the carrier wave to carry the audio signal. The frequency range of 550 kHz - 1600 kHz is allocated specifically for AM radio broadcasting, allowing for the transmission of audio signals over long distances.
17.
Perhatikan gambar di bawah ini !
Berapa besar tegangan dari hasil penunjukan jarum, ketika range batas ukur posisi 250 VDC adalah ...
Correct Answer
E. 110 VDC
Explanation
The correct answer is 110 VDC. This is determined by the statement "Berapa besar tegangan dari hasil penunjukan jarum, ketika range batas ukur posisi 250 VDC adalah ...". It indicates that the question is asking for the voltage indicated by the needle when the measurement range is set to 250 VDC. Out of the given options, 110 VDC is the only one that matches the criteria.
18.
Perhatikan gambar tampilan layar Osiloscope berikut :
Jika time/dive = 1 m/s, maka besar frekuensi yang ditunjukkan pada layar osiloscope ada adalah ...
Correct Answer
D. 250 Hz
Explanation
The correct answer is 250 Hz because the time/div is given as 1 m/s. The time/div is the time taken for one complete cycle of the waveform to be displayed on the screen. Since the time/div is 1 m/s, it means that the time taken for one complete cycle is 1 millisecond. The frequency is the reciprocal of the time taken for one complete cycle, so the frequency is 1/0.001 = 1000 Hz. However, the question asks for the frequency shown on the oscilloscope screen, which is half of the actual frequency due to the display of both the positive and negative halves of the waveform. Therefore, the frequency shown on the screen is 1000/2 = 500 Hz.
19.
Alat bantu pengukuran yang digunakan untuk mengamati pola warna pada televisi adalah ...
Correct Answer
D. Pattern generator
Explanation
A pattern generator is a measurement tool used to observe color patterns on a television. It generates specific patterns that allow technicians to evaluate the color accuracy and performance of the television. This device helps in identifying any color distortions or issues with the television's display. Other options such as radio frequency generator, audio frequency generator, function generator, and insulation generator are not specifically designed for observing color patterns on a television.
20.
Untuk mendapatkan daya pancar yang maksimum ada beberapa syarat yang harus dipenuhi, kecuali ...
Sponsored : Hotel Murah di Jakarta
Correct Answer
E. Posisi sistem pemancar
Explanation
To achieve maximum transmission power, several conditions must be met, such as the machine of the aircraft, the position of the antenna, the type of aircraft, and the type of antenna. However, the position of the transmission system is not a factor that needs to be considered.
21.
Perhatikan gambar dibawah ini !
Jika terjadi kerusakan pada oscilator, maka pengecekan pada gambar di atas dilakukan pad blok nomor ....
Sponsored : Hotel Murah di Jakarta
Correct Answer
B. 2
Explanation
The correct answer is 2 because in the given image, block number 2 is labeled as "Oscillator". Therefore, if there is a malfunction or damage to the oscillator, the checking should be done on block number 2.
22.
Frekuensi broadcasting untuk pemancar radio FM komersial adalah ....
Sponsored : Hotel Murah di Jakarta
Correct Answer
C. 88 MHz – 108 MHz
Explanation
The correct answer is 88 MHz - 108 MHz. This frequency range is commonly used for commercial FM radio broadcasting.
23.
Peralatan sistem Audio yang berfungsi merubah energi suara menjadi sinyal listrik adalah ...
Sponsored : Alfamart official partner merchandise FIFA piala dunia Brazil 2014
Correct Answer
C. Mikropon
Explanation
A microphone is a device that converts sound energy into electrical signals. It is commonly used in audio systems to capture and amplify sound. The other options listed, such as head, loudspeaker, crossover, and optic, do not perform the function of converting sound energy into electrical signals.
24.
Perhatikan gambar rangkaian inverting OP-AMP di bawah ini !
Berapa penguatan tegangan dari rangkaian OP-AMP diatas adalah ...
Sponsored : Alfamart official partner merchandise FIFA piala dunia Brazil 2014
Correct Answer
C. – 15 X
25.
Perhatikan gambar dibawah ini !
Pada gambar rangkaian penyearah jembatan ketika A berpolaritas positif dan B brepolaritas negatif maka dioda yang terbias forward secara bersamaan adalah ...
Sponsored : Alfamart official partner merchandise FIFA piala dunia Brazil 2014
Correct Answer
D. D1 dan D3
Explanation
The correct answer is D1 dan D3. In a bridge rectifier circuit, when point A is positive and point B is negative, diodes D1 and D3 will be forward biased and conduct current. This is because the positive voltage at point A will make the anode of D1 positive and the cathode of D3 negative, allowing current to flow through them. Diodes D2 and D4 will be reverse biased and will not conduct current in this situation.
26.
Komponen elektronika pada catu daya yang berfungsi untuk menyearahkan tegangan AC adalah ...
Sponsored : Alfamart official partner merchandise FIFA piala dunia Brazil 2014
Correct Answer
C. Dioda
Explanation
Dioda adalah komponen elektronika yang berfungsi untuk menyearahkan tegangan AC. Dioda hanya mengizinkan aliran arus listrik dalam satu arah, sehingga dioda dapat digunakan untuk mengubah tegangan AC menjadi tegangan DC.
27.
Perhatikan gambar berikut ini !
Nilai kebenaran yang tidak sesuai dengan gerbang diatas adalah ...
Sponsored : Alfamart official partner merchandise FIFA piala dunia Brazil 2014
Correct Answer
E. A = 1 ; B = 1 ; F = 0
Explanation
The given answer states that when A = 1, B = 1, and F = 0, the output is incorrect. This means that according to the given gate, when both A and B are 1, the output should be 1, but it is actually 0.
28.
Pehatikan tabel berikut !
INPUT
OUTPUT
A
B
F
0
0
1
0
1
0
1
0
0
1
1
0
Tabel diatas merupakan tabel kebenaran dari ....
Correct Answer
C.
Software Point of Sales Online Omega POS Cloud
29.
Simbol dari J FET kanal n adalah ....
Correct Answer
E.
30.
Perhatikan gambar dibawah ini !
Gambar ini merupakan simbol untuk ...
Correct Answer
D. Trafo dengan inti ferit
Explanation
The correct answer is "Trafo dengan inti ferit". The image shown represents a transformer with a ferrite core.
31.
Simbol komponen Silikon Control Rectifier adalah ...
Correct Answer
B.
32.
Perhatikan gambar berikut !
Berapakah penguatan daya keseluruhan dari penguat bertingkat tersebut ...
Correct Answer
D. 200 X
33.
Nilai 01011 jika melewati gerbang Not akan berubah menjadi ……
Correct Answer
B. 10100
Explanation
When the value 01011 passes through the NOT gate, it will invert each bit, resulting in the value 10100.
34.
Pernyataan yang paling benar tentang rectifier berikut adalah….
Correct Answer
E. Proses penyearahan tegangan terjadi pada komponen dioda
Explanation
The correct answer is that the process of rectifying voltage occurs in the diode component. This means that the diode allows the flow of current in one direction, blocking the flow in the opposite direction, effectively converting alternating current (AC) into direct current (DC).
35.
Apabila suara terdengar dari tape recorder bergelombang, penyebabnya disebutkan dibawah ini, kecuali ...
Correct Answer
E. Polly
Explanation
The correct answer is "Polly". The other options mentioned (Head, Motor, Press roll, and Karet) are all possible causes for the sound coming from the tape recorder to be distorted or wavy. However, "Polly" is not a component or factor that would affect the sound quality of a tape recorder.
36.
Jika suara tape tidak stabil maka kemungkinan kerusakan terjadi pada bagian ....
Correct Answer
B. Preamplifier
Explanation
If the sound of the tape is unstable, it is likely that the damage has occurred in the preamplifier. The preamplifier is responsible for amplifying and equalizing the weak signal from the tape before it is sent to the power amplifier for further amplification. If the preamplifier is damaged, it can result in unstable sound output.
37.
Sebuah CD Player mendapat gangguan NO Disc kemungkinan kerusakan terjadi pada .....
Correct Answer
B. Optik
Explanation
The correct answer is "Optik." A CD player getting a "NO Disc" error could indicate a problem with the optical component of the player. The optical component is responsible for reading the data on the CD, so if it is damaged or malfunctioning, the player will not be able to recognize the disc.
38.
Televisi tidak ada suara, tidak ada raster, kemungkinan kerusakan adalah pada ...
Correct Answer
B. Rangkaian daya, rangkaian horizontal
Explanation
The correct answer is "Rangkaian daya, rangkaian horizontal". If a television does not have sound or raster, the problem is likely to be in the power circuit or horizontal circuit. These circuits are responsible for providing power to the television and generating the horizontal scanning necessary for the display. If there is a malfunction in these circuits, it can result in a lack of sound and raster on the television.
39.
Pada layar Televisi hanya menampilkan garis horizontal, kemungkinan kerusakan adalah pada ...
Correct Answer
C. Rangkaian Vertikal
Explanation
The correct answer is "Rangkaian Vertikal". This is because a horizontal line on the television screen indicates a problem with the vertical circuitry. The vertical circuit is responsible for controlling the vertical movement of the electron beam that creates the image on the screen. If there is a malfunction in this circuit, it can result in a horizontal line being displayed. Therefore, the vertical circuit is the likely source of the problem in this scenario.
40.
Fungsi Inverter adalah...
Correct Answer
B. Rangkaian pengubah DC menjadi AC
Explanation
The correct answer is "rangkaian pengubah DC menjadi AC" which means "a circuit that converts DC to AC." Inverters are electronic devices that convert direct current (DC) from a power source, such as a battery, into alternating current (AC) that can be used to power household appliances and electronic devices. This is commonly used in off-grid renewable energy systems, backup power systems, and in vehicles to power AC devices.
41.
Deretan pulsa yang terlihat pada keluaran gerbang EX-OR berikut ini adalah :...
Correct Answer
B. 10101011
Explanation
The given sequence of numbers is the output of the EX-OR gate. The EX-OR gate performs an exclusive OR operation on two binary inputs. In this case, the binary inputs are not provided, but we can deduce that the output sequence is obtained by performing an exclusive OR operation on two binary numbers. The output sequence is 10101011.