Como Secondary College Soldering Quiz

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    Which is the correct soldering technique as shown in the diagram below, A or B?   - ProProfs

    Which is the correct soldering technique as shown in the diagram below, A or B?  

    • A
    • B
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About This Quiz

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You have received a copy of the Soldering Guide by email. Now we need you to complete this quiz. All the answers are in the Soldering Guide.
You must get 100% in the test, so if you do not get it all right the first time, then try, try again until you do!

Como Secondary College Soldering Quiz - Quiz

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  • 2. 

    What is the wet sponge used for in the soldering process?

    • Clean the PCB to keep a good connection between components.

    • Clean the solder of impurities.

    • Clean the tip of the soldering iron.

    • None of the above.

    Correct Answer
    A. Clean the tip of the soldering iron.
    Explanation
    The wet sponge is used to clean the tip of the soldering iron. When soldering, the tip of the iron can become dirty or oxidized, which can affect the quality of the solder joint. By wiping the tip on a wet sponge, any impurities or oxidization can be removed, ensuring a clean and efficient soldering process.

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  • 3. 

    What are the elements most common in solder?

    • Copper and Zinc

    • Iron and Tin

    • Tin and Zinc

    • Tin and Lead

    Correct Answer
    A. Tin and Lead
    Explanation
    Solder is a metal alloy used to join or bond other metals together. The most common elements found in solder are tin and lead. These two elements have low melting points, making them ideal for soldering applications. Tin provides good wetting properties, allowing the solder to spread and adhere to the surfaces being joined. Lead, on the other hand, improves the ductility and workability of the solder. The combination of tin and lead creates a solder that is easy to use and produces strong and reliable connections.

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  • 4. 

    Does it matter which way you place a resistor in a Printed Circuit Board (PCB)? 

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    It does not matter which way a resistor is placed in a Printed Circuit Board (PCB) because resistors are non-polarized components, meaning they can be connected in either direction without affecting their functionality. The resistor's purpose is to limit the flow of current in a circuit, and it does not have a specific orientation requirement. Therefore, it can be placed in any direction on the PCB without any impact on its performance.

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  • 5. 

    Does it matter which component you solder onto the Printed Circuit Board (PCB) first? 

    • Yes

    • No

    Correct Answer
    A. No
    Explanation
    The order in which components are soldered onto a Printed Circuit Board (PCB) can have an impact on the overall assembly process. However, it does not matter which component is soldered first as long as proper soldering techniques are followed. The important factors to consider are the accessibility of the components, the heat generated during soldering, and the potential for damage to other components. As long as these considerations are taken into account, the order of soldering does not affect the functionality or reliability of the PCB.

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  • 6. 

    When you solder a component onto a pad on the Printed Circuit Board should it cover the entire pad? 

    • Yes

    • No

    Correct Answer
    A. Yes
    Explanation
    When soldering a component onto a pad on the Printed Circuit Board, it is preferable for the solder to cover the entire pad. This ensures a strong and reliable electrical connection between the component and the PCB. The solder creates a bridge between the component lead and the pad, allowing for the transfer of electrical signals. If the solder does not cover the entire pad, there may be insufficient contact area, leading to a weak connection that can result in intermittent or faulty electrical connections. Therefore, it is best practice to ensure that the solder covers the entire pad for optimal performance and reliability.

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  • 7. 

    When soldering a joint, what does the tip of the soldering iron need to be in contact with? 

    • The component wire

    • The PCB pad

    • Both A and C

    • None of the above

    Correct Answer
    A. Both A and C
    Explanation
    When soldering a joint, the tip of the soldering iron needs to be in contact with both the component wire and the PCB pad. This ensures that the heat from the soldering iron is transferred to both the wire and the pad, allowing the solder to melt and create a strong bond between the two.

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  • 8. 

    What is the minimum temperature of the soldering iron required to solder?   

    • 200 °C

    • 250 °C

    • 300 °C

    • 310 °C

    Correct Answer
    A. 200 °C
    Explanation
    The minimum temperature required to solder is 200 °C. This temperature allows the solder to melt and flow properly, creating a strong bond between the components being soldered. Soldering at a lower temperature may result in a weak or unreliable connection.

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  • 9. 

    How much solder is required (in general) to solder each connection? 

    • 1-3mm of solder (below the tip of the soldering iron)

    • 1-3mm of solder (above the tip of the soldering iron)

    • 4-5mm of solder (below the tip of the soldering iron)

    • 4-5mm of solder (above the tip of the soldering iron)

    Correct Answer
    A. 1-3mm of solder (above the tip of the soldering iron)
    Explanation
    The correct answer is 1-3mm of solder (above the tip of the soldering iron). This is because when soldering, the solder should be applied to the joint, not to the soldering iron itself. Applying the solder above the tip allows it to flow down onto the joint and create a strong connection.

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  • 10. 

    How long does it take for solder to cool down its stopped being heated on the Printed Circuit Board (PCB)? 

    • About 1 second

    • About 2 seconds

    • More than 2 seconds

    • Instantly

    Correct Answer
    A. About 1 second
    Explanation
    Solder takes about 1 second to cool down after it has stopped being heated on the Printed Circuit Board (PCB).

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 21, 2013
    Quiz Created by
    EngineeringOutre

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