Soal Latihan Instalasi Motor Listrik

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  • 1/21 Pertanyaan

    Pada instalasi motor tiga fasa biasanya dipasang MCB namun tetap dipasang juga overload---

    • Karena overload lebih sensitif dari pada MCB untuk arus beban lebih
    • Karena MCB lebih paraktis
    • Karena MCB lebih mudah dipasang
    • Karena MCB dapat dipakai berulang
    • Karena MCB lebih peka
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Soal Latihan Instalasi Motor Listrik - Quiz
About This Quiz

Berisi soal-soal penghantar komponen dan tentang motor listrik

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  • 2. 

    Kontaktor magnet bantu tidak mempunyai kontak utama dan semua kontak NO mempunyai kemampuan arus yang sama

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement is true because a magnetic contactor does not have a main contact and all normally open (NO) contacts have the same current-carrying capacity. This means that all the NO contacts in a magnetic contactor can handle the same amount of current.

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  • 3. 

    Jenis kabel berikut ini adalah jenis kabel penghantar yang dapat dipakai diluar permukaan atau didalam permukaan dan dapat ditanam dalam tanah

    • NYAF

    • NYY

    • NYM

    • NYA

    • BC

    Correct Answer
    A. NYY
    Explanation
    The correct answer is NYY. NYY is a type of cable that can be used both underground and above ground. It is designed to be buried in the ground and can also be installed in conduit or ducts. NYY cables are commonly used for outdoor applications where they are exposed to moisture, sunlight, and other environmental factors. They are suitable for both residential and industrial installations.

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  • 4. 

    Penghantar kabel dengan inti tembaga dinyatakan dengan kode huruf

    • Y

    • F

    • N

    • H

    • Z

    Correct Answer
    A. N
    Explanation
    The given answer "N" is the correct code for a copper core cable conductor. The other options (Y, F, H, Z) do not represent the code for a copper core conductor.

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  • 5. 

    Jika pada Instalasi motor telah dipasang SPM maka tidak perlu lagi pemasangan overload karena prinsip kerjanya sama

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The statement explains that if a motor has been installed with SPM (presumably a type of protection device), then there is no need to install an overload device because they function on the same principle. This suggests that the SPM device already provides the necessary protection against overload, making the statement true.

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  • 6. 

    Ada tiga macam motor kapasitor yaitu, motor kapasitor start, motor kapasitor run, dan motor kapasitor start-run

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The given statement is true. There are three types of capacitor motors: capacitor start, capacitor run, and capacitor start-run motors. These motors use capacitors to improve their starting and running performance. The capacitor start motor uses a capacitor to provide an initial boost to start the motor, while the capacitor run motor uses a capacitor to improve its running efficiency. The capacitor start-run motor combines both features, using capacitors for both starting and running operations.

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  • 7. 

    Kotak kontak yang dipasang khusus untuk digunakan secara tetap bagi peralatan listrik tertentu yang diketahui spesifikasinya disebut

    • Kotak kontak biasa

    • Kotak kontak portable

    • Kotak kontak tiga phase

    • Kotak kontak tegangan

    • Kotak kontak khusus

    Correct Answer
    A. Kotak kontak khusus
    Explanation
    The correct answer is "kotak kontak khusus". This is because the question states that the contact box is specifically installed for permanent use for certain electrical equipment with known specifications. Therefore, the term "kotak kontak khusus" accurately describes a contact box that is designed and installed for specific and permanent use.

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  • 8. 

    Jika energi yang diperlukan dalam memindahkan muatan listrik 4 coulomb dari titik A ke B adalah 20 Joule Hitung beda potensial antara titik A dan B ( rumus V = W/Q )

    • 3 volt

    • 4 volt

    • 5 volt

    • 6 volt

    • 8 volt

    Correct Answer
    A. 5 volt
    Explanation
    The formula for calculating potential difference (V) is V = W/Q, where W is the work done and Q is the charge. In this question, the work done (W) is given as 20 Joule and the charge (Q) is given as 4 coulomb. By substituting these values into the formula, we get V = 20/4 = 5 volt. Therefore, the potential difference between point A and B is 5 volt.

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  • 9. 

    Pipa Instalasi yang terbuat dari besi dan mempunyai kekuatan mekanis yang cukup kuat melindungi penghantar adalah

    • Pipa union

    • Pipa PVC

    • Pipa plexible

    • Pipa galvanis

    • Pipa pelindung

    Correct Answer
    A. Pipa union
    Explanation
    Pipa instalasi yang terbuat dari besi dan memiliki kekuatan mekanis yang cukup kuat untuk melindungi penghantar adalah pipa galvanis. Pipa galvanis terbuat dari besi yang dilapisi dengan lapisan seng, sehingga tahan terhadap korosi dan memiliki kekuatan mekanis yang baik. Pipa ini sering digunakan dalam instalasi air, gas, dan listrik, karena dapat melindungi penghantar dari kerusakan dan keausan. Pipa union, pipa PVC, pipa plexible, dan pipa pelindung tidak memiliki kekuatan mekanis yang cukup untuk melindungi penghantar seperti pipa galvanis.

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  • 10. 

    Jika pengoperasian suatu sistem dapat cepat dilakukan dengan mudah pemasangan peralatan sistem dan instalasi dapat dilakukan dengan   cepat dan tepat mudah dalam perawatan dan perbaikan sistem serta mudah dalam pengembangan dan perluasan adalah prinsip dasar

    • Safty

    • Reliabelity

    • Infact of environment

    • Accessibility

    • Availabelity

    Correct Answer
    A. Accessibility
    Explanation
    The given statement suggests that the basic principle being described is "accessibility". This means that the system can be operated quickly and easily, the equipment can be installed quickly and accurately, the system is easy to maintain and repair, and it is easy to develop and expand the system. Accessibility in this context refers to the ease of use and availability of the system.

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  • 11. 

    Saklar pengaman motor( SPM ), ada dua macam yaitu tunggal dan ganda, terangkan fungsi SPM tunggal

    • Mengamankan instalasi daya dan pengendalinya

    • Mengamankan terjadinya arus bocor

    • Mengamankan hanya instalasi pengendalinya

    • Mengamankan hanya instalasi dayanya

    • Mengamankan arus beban lebih

    Correct Answer
    A. Mengamankan instalasi daya dan pengendalinya
    Explanation
    The function of a single motor safety switch (SPM) is to secure the power installation and its control. It ensures the safety of both the power supply and the control system, preventing any potential hazards or accidents.

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  • 12. 

    Konstruksi sebuah kontaktor terdiri dari 4 bagian yaitu, kumparan magnet, kontak utama, kontak bantu dan kontak membuka dan menutup

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement is false because a contactor consists of three main parts: the electromagnet coil, the main contacts, and the auxiliary contacts. The electromagnet coil creates a magnetic field that attracts the contacts, allowing the circuit to close. The main contacts carry the current when the circuit is closed, while the auxiliary contacts are used for control and signaling purposes. There is no specific contact called "kontak membuka dan menutup" in a contactor.

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  • 13. 

    Komponen MCB yang berfungsi mengamanarus beban lebih adalah ---

    • Relay

    • Overload

    • Relay elektromagnetik

    • Komponen thermis

    • Komponen electrimagnetik

    Correct Answer
    A. Komponen thermis
    Explanation
    The correct answer is "komponen thermis." The thermis component functions to protect against excessive load by detecting the temperature rise caused by the overload. When the temperature reaches a certain threshold, the thermis component will trip and disconnect the circuit, preventing any further damage or danger.

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  • 14. 

    Berikut ini adalah prinsip-prinsip pemasangan pemasangan instalasi listrik tenaga kecuali---

    • Prinsip dasar instalasi listrik

    • Merencanakan gambar untuk listrik tenaga

    • Menentukan ukuran penghantar

    • Menghitung rugi tegangan

    • Menentukan besar nlai nominal pemutus sirkitpada sirkit akhir maupun cabang

    Correct Answer
    A. Menghitung rugi tegangan
    Explanation
    The given answer, "menghitung rugi tegangan" (calculating voltage drop), is the correct answer because it is the only principle that is not related to the installation of electrical power. The other principles mentioned in the question, such as planning the electrical power diagram, determining the conductor size, and determining the nominal value of circuit breakers, are all directly related to the installation of electrical power. Calculating voltage drop, on the other hand, is a principle used to determine the amount of voltage loss in a circuit, which is not directly related to the installation process.

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  • 15. 

    Pada diagram garis tunggal harus menunjukkan hal-hal sebagai berikut kecuali ---

    • Data beban terpasang

    • Ukuran penghantar

    • Jenis penghantar

    • Sistem pembumian

    • Peralatan yang dapat dipasang

    Correct Answer
    A. Peralatan yang dapat dipasang
    Explanation
    In a single line diagram, various aspects of an electrical system are represented. These include the connected load data, conductor size, conductor type, grounding system, and the equipment that can be installed. However, the equipment that can be installed is not a requirement for a single line diagram. Therefore, it is the exception among the given options.

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  • 16. 

    Fungsi kumparan bantu pada motor kapasitor adalah---

    • Untuk menjaga stabilitas putaran

    • Untuk mengimbangi kerja gulungan utama

    • Untuk mempercepat putaran

    • Agar motor tak berhenti tiba-tiba

    • Untuk membangkitkan arus berbeda phase antara kumparan utama dan bantu

    Correct Answer
    A. Untuk membangkitkan arus berbeda phase antara kumparan utama dan bantu
    Explanation
    The auxiliary coil in a capacitor motor is used to generate a phase difference between the main and auxiliary coils. This phase difference creates a rotating magnetic field, which helps in starting and running the motor. This rotating magnetic field aids in the motor's torque production and helps maintain stability in the motor's rotation. Therefore, the correct answer is "to generate a phase difference between the main and auxiliary coils."

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  • 17. 

    Dalam pemasangan instalasi outbow agar pemasangan tampak lebih rapi dapat digunakan

    • Pipa instalasi

    • Kanal

    • Kotak sambung

    • Pelindung penghantar

    • Kabel tease

    Correct Answer
    A. Kanal
    Explanation
    To achieve a neater installation, a channel can be used. A channel is a type of conduit that is used to enclose and protect electrical wires or cables. It helps to organize and hide the wires, making the installation look more tidy and professional. By using a channel, the wires are securely placed inside and can be easily accessed or modified if needed.

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  • 18. 

    Untuk menentukan nilai nominal pemutus sirkit pada sirkit cabang digunakan

    • Alat proteksi sirkit akhir terkecil ditambah arus nominal motor terbesar

    • Cukup diambil arus nominal sirkit akhir saja

    • Proteksi psirkit akhir terbesar  dan ditambah arus nominal motor-motor lainnya

    • Diambil antara proteksi sirkit akhir terbesar dan terkecil

    • Diambil proteksi sirkit akhir terbesar

    Correct Answer
    A. Proteksi psirkit akhir terbesar  dan ditambah arus nominal motor-motor lainnya
    Explanation
    The correct answer is "proteksi sirkit akhir terbesar dan ditambah arus nominal motor-motor lainnya". This means that to determine the nominal value of the circuit breaker in a branch circuit, the largest protection circuit device should be considered, along with the nominal current of other motors. This ensures that the circuit breaker can handle the maximum load and provide adequate protection for the circuit.

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  • 19. 

    Termal overload berguna untuk ----

    • Mengamankan motor dari tegangan lebih

    • Mengamankanmotor dari beban lebih

    • Mengamankan motor dari arus lebih

    • Mengamankan motor dari arus beban lebih

    • Mengamankan motor dari tegangan beban lebih

    Correct Answer
    A. Mengamankan motor dari arus beban lebih
    Explanation
    Thermal overload berguna untuk mengamankan motor dari arus beban lebih. Ketika arus yang melewati motor melebihi batas yang ditentukan, thermal overload akan mendeteksi peningkatan suhu yang terjadi pada motor. Kemudian, thermal overload akan memutuskan aliran listrik ke motor untuk mencegah terjadinya kerusakan pada motor akibat arus beban yang terlalu tinggi. Dengan demikian, thermal overload berperan penting dalam menjaga keamanan dan mencegah kerusakan pada motor.

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  • 20. 

    Berikut adalah golongan kontaktor magnet kecuali----

    • Kontaktor magnet utama

    • Kontaktor magnet bantu

    • Normally open

    • Relay kontaktor

    • Timer delay relay

    Correct Answer
    A. Normally open
    Explanation
    The correct answer is "normally open". The other options listed are all types of magnetic contactors, while normally open is not a type of magnetic contactor.

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  • 21. 

    Saklar yang dihubungkan langsung dengan sumber tegangan untuk menghidupkan motor listrik adalah

    • Saklar utama

    • Saklar daya

    • Saklar pengontrol

    • Saklar pembantu

    • Saklar TPDT

    Correct Answer
    A. Saklar daya
    Explanation
    The correct answer is "saklar daya". This switch is directly connected to the power source and is used to turn on the electric motor. It is responsible for controlling the flow of electrical current to the motor, allowing it to be powered on or off as needed.

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  • Current Version
  • Jul 22, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 23, 2019
    Quiz Created by
    I Gusti
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