Soal UH Instalasi Motor Listrik

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| By Lutfi Hasanudin

Lutfi Hasanudin

Community Contributor

Quizzes Created: 2 | Total Attempts: 1,430

Questions: 10 | Attempts: 704 | Updated: Mar 20, 2023

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Questions and Answers

1.

Berikut adalah kelompok komponen kontrol adalah
- A.
  
  Saklar ON
- B.
  
  Saklar OFF
- C.
  
  Timer
- D.
  
  Overload relay
- E.
  
  MCB 3 fasa
Correct Answer(s)
A. Saklar ON
B. Saklar OFF
C. Timer
D. Overload relay

Explanation
The correct answer is the components listed in the answer options: saklar ON, saklar OFF, Timer, Overload relay. These components are all part of a control system. The saklar ON and saklar OFF are switches used to turn the system on and off. The Timer is used to control the timing of certain operations. The Overload relay is a protective device that detects excessive current and shuts down the system to prevent damage. These components work together to control the operation of the system.

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2.

Disamping adalah gambar dari tombol start
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The explanation for the answer "False" is that the given statement says "Disamping adalah gambar dari tombol start" which means "Next to it is a picture of the start button" in English. However, since there is no picture provided in the question, we cannot determine whether the statement is true or false. Therefore, the answer is "False" as we cannot confirm the presence of a start button picture.

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3.

Berikut adalah kode dalam kontaktor kecuali
- A.
  
  13-14
- B.
  
  21-22
- C.
  
  2-7
- D.
  
  A1-A2
- E.
  
  43-44
Correct Answer
C. 2-7

Explanation
The given code includes various pairs of numbers and letters, except for the pair "2-7".

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4.

Kontak NO pada timer adalah
- A.
  
  1-3
- B.
  
  A1-A2
- C.
  
  1-4
- D.
  
  8-5
Correct Answer
A. 1-3

Explanation
During the night the high contrast between the bright moon and the night's dark skies make the Moon look white.

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5.

Thermal overload Relay dipasang secara pararel
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The correct answer is False. Thermal overload relays are not installed in parallel. They are typically installed in series with the motor they protect. This allows the relay to monitor the current flowing through the motor and trip if it exceeds a certain threshold, protecting the motor from overheating. Installing them in parallel would not provide the same level of protection and could lead to damage or failure of the motor.

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6.

Berdasarkan rangkaian daya gambar disamping, bagaimanakah prinsip kerja motor 3 fasa berikut
- A.
  
  Kiri - kanan
- B.
  
  Star-Delta
- C.
  
  Segitiga-Bintang
Correct Answer
A. Kiri - kanan

Explanation
The correct answer is "Kiri - kanan". This refers to the direction of rotation of a three-phase motor. In a three-phase motor, the direction of rotation can be changed by swapping any two of the three motor leads. "Kiri" means clockwise rotation, while "kanan" means counterclockwise rotation. So, "Kiri - kanan" indicates that the motor can rotate in both clockwise and counterclockwise directions.

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7.

Simbol disamping untuk komponen berupa
- A.
  
  MCB
- B.
  
  MCB 3 Fasa
- C.
  
  Push Button
- D.
  
  TOR
Correct Answer
A. MCB

Explanation
The correct answer is MCB. The given symbols represent different components, and the correct answer is MCB. The MCB (Miniature Circuit Breaker) is a type of electrical switch that automatically interrupts the flow of current in an electrical circuit when it detects a fault or overload. It is commonly used as a safety device to protect electrical circuits from damage caused by excessive current.

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8.

Fungsi MCB adalah sebagai
- A.
  
  Saklar
- B.
  
  Pembatas Arus
- C.
  
  Pengaman
- D.
  
  Pencacah
Correct Answer(s)
A. Saklar
B. Pembatas Arus
C. Pengaman

Explanation
The correct answer is "Saklar, Pembatas Arus, Pengaman." MCB stands for Miniature Circuit Breaker, which is a device used in electrical systems to protect against overcurrent and short circuits. It functions as a switch to control the flow of electricity, a current limiter to prevent excessive current flow, and a safety device to protect against electrical hazards. Therefore, MCB serves as a switch, current limiter, and safety device.

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9.

Beberapa penyebab beban lebih adalah
- A.
  
  Terlalu besarnya beban mekanik pada motor
- B.
  
  Arus start terlalu besar
- C.
  
  Motor berhenti mendadak
- D.
  
  Terbukanya salah satu fasa
- E.
  
  Terbuka 3 fasanya
Correct Answer(s)
A. Terlalu besarnya beban mekanik pada motor
B. Arus start terlalu besar
C. Motor berhenti mendadak
D. Terbukanya salah satu fasa

Explanation
The correct answer suggests that there are several causes of excessive load, including excessive mechanical load on the motor, excessive starting current, sudden motor stoppage, and the opening of one phase or all three phases. These factors can contribute to an overload situation in the motor, leading to potential issues or failures.

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0
1
10.

Cara pengecekan untuk rangkaian daya
- A.
  
  Daya yang masuk ke rangkaian dan kesempurnaannya
- B.
  
  Periksa kebenaran fungsi dari peralatan proteksi
- C.
  
  Periksa kontinuitas kabel secara penglihatan
Correct Answer(s)
A. Daya yang masuk ke rangkaian dan kesempurnaannya
B. Periksa kebenaran fungsi dari peralatan proteksi
C. Periksa kontinuitas kabel secara penglihatan

Explanation
The given answer suggests three steps for checking the power circuit: 1) Checking the power input and its quality, 2) Verifying the proper functioning of protection equipment, and 3) Visually inspecting the continuity of cables. These steps ensure that the power circuit is receiving the correct power, the protection equipment is working correctly, and there are no visible issues with the cables.

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Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

Current Version
Mar 20, 2023

Quiz Edited by
ProProfs Editorial Team
May 07, 2015

Quiz Created by
Lutfi Hasanudin

Soal Uh Instalasi Motor Listrik

Berikut adalah kelompok komponen kontrol adalah

Disamping adalah gambar dari tombol start

Berikut adalah kode dalam kontaktor kecuali

Kontak NO pada timer adalah

Thermal overload Relay dipasang secara pararel

Berdasarkan rangkaian daya gambar disamping, bagaimanakah prinsip kerja motor 3 fasa berikut

Simbol disamping untuk komponen berupa

Fungsi MCB adalah sebagai

Beberapa penyebab beban lebih adalah

Cara pengecekan untuk rangkaian daya