Earthing Safety Trivia Quiz

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  • 1/10 Questions

    How many types of wire system are installed in a modern house? 

    • Four types 
    • Three types 
    • Six types 
    • Five types 
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About This Quiz

Earthing is the electrical connection of the mains to the earth's conductive system. It is a necessary procedure that ensures safety from electrical misfirings during lightening and sparks. Earthing is unavoidable in electrical installation for industrial plants, mines, and residential buildings. How much do you know about this?

Earthing Safety Trivia Quiz - Quiz

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  • 2. 
    What must be kept low to ensure voltage on exposed surfaces is not too high?  - ProProfs

    What must be kept low to ensure voltage on exposed surfaces is not too high? 

    • Impedance 

    • Inductance 

    • Current 

    • Power 

    Correct Answer
    A. Impedance 
    Explanation
    Impedance must be kept low to ensure voltage on exposed surfaces is not too high. Impedance is the total opposition that a circuit presents to the flow of alternating current. When impedance is high, it restricts the flow of current, leading to a higher voltage drop across the circuit. By keeping impedance low, the voltage on exposed surfaces can be controlled and kept at a safe level.

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  • 3. 
    Which of these is not a wiring system in a modern house?  - ProProfs

    Which of these is not a wiring system in a modern house? 

    • Live 

    • Ground 

    • Line 

    • Neutral 

    Correct Answer
    A. Live 
    Explanation
    The live wire is actually a part of the wiring system in a modern house. It carries the electrical current from the power source to the electrical appliances and outlets. The ground wire, line wire, and neutral wire are also essential components of the wiring system. The ground wire provides a path for electrical current to safely discharge in case of a fault, the line wire carries the current from the power source, and the neutral wire completes the circuit. Therefore, the correct answer is Live.

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  • 4. 
    Which of these devices uses functional earth connections?  - ProProfs

    Which of these devices uses functional earth connections? 

    • Circuit breaker 

    • Surge suppressor 

    • Fuse

    • Electric sockets 

    Correct Answer
    A. Surge suppressor 
    Explanation
    Surge suppressors are devices that protect electrical equipment from voltage spikes or surges. They typically use functional earth connections to redirect excess voltage to the ground, preventing it from damaging the connected devices. This grounding feature helps to protect against power surges and ensures the safety of the equipment and users. Circuit breakers and fuses, on the other hand, are designed to interrupt the flow of electricity in the event of an overload or short circuit, but they do not necessarily require functional earth connections. Electric sockets simply provide a means for connecting electrical devices to the power supply and do not involve functional earth connections.

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  • 5. 
    Which of these electric systems does not use surge protection?   - ProProfs

    Which of these electric systems does not use surge protection?  

    • Process control systems 

    • Communication systems 

    • Bioresources systems 

    • Industrial systems 

    Correct Answer
    A. Bioresources systems 
    Explanation
    Bioresources systems do not typically use surge protection because they are not directly connected to the power grid or other electrical systems. They often involve the use of natural resources such as plants or animals for various purposes like waste management or energy production. These systems do not rely heavily on electrical components and are designed to operate independently without the need for surge protection.

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  • 6. 
    Which of these is not a method of shorting?  - ProProfs

    Which of these is not a method of shorting? 

    • Spark gaps 

    • Discharge tubes 

    • Option 3

    • Bridge-type semiconductors 

    Correct Answer
    A. Bridge-type semiconductors 
    Explanation
    Bridge-type semiconductors are not a method of shorting. Shorting refers to the act of connecting two points in an electrical circuit with a conductor, resulting in a low resistance path. Spark gaps and discharge tubes are examples of devices that can be used for shorting. However, bridge-type semiconductors do not serve this purpose and are not typically used for shorting circuits.

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  • 7. 
    Which of these serves more purposes other than electrical safety?  - ProProfs

    Which of these serves more purposes other than electrical safety? 

    • Single earthing 

    • Double earthing

    • Functional earthing 

    • Power earthing 

    Correct Answer
    A. Functional earthing 
    Explanation
    Functional earthing serves more purposes other than electrical safety. It is used to provide a reference point for electrical circuits, ensuring proper functioning of equipment and preventing damage from voltage fluctuations. It also helps in reducing electromagnetic interference and improving the overall performance of electrical systems. Additionally, functional earthing is essential for the proper operation of sensitive electronic devices and for the safety of personnel working with electrical equipment.

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  • 8. 
    Which of these does not support electromagnetic interference to prevent shocks?  - ProProfs

    Which of these does not support electromagnetic interference to prevent shocks? 

    • Electrostatic coupling 

    • Ignition systems 

    • Electromagnetic induction 

    • Conduction 

    Correct Answer
    A. Ignition systems 
    Explanation
    Ignition systems do not support electromagnetic interference to prevent shocks. Ignition systems are responsible for creating a spark to ignite the fuel-air mixture in an internal combustion engine. They generate high voltage pulses to produce the spark, but they do not have any specific mechanisms in place to prevent electromagnetic interference or to protect against shocks. On the other hand, electrostatic coupling, electromagnetic induction, and conduction are all mechanisms that can support electromagnetic interference and can potentially lead to shocks.

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  • 9. 
    What voltage causes safety devices to short?  - ProProfs

    What voltage causes safety devices to short? 

    • Clamping voltage

    • Shorting voltage 

    • Threshold voltage 

    • Quantal voltage 

    Correct Answer
    A. Clamping voltage
    Explanation
    Safety devices, such as surge protectors or voltage regulators, are designed to protect electrical devices from voltage spikes or surges. When the voltage exceeds a certain level, known as the clamping voltage, these safety devices will short the excess voltage to protect the connected devices. Therefore, the correct answer is "Clamping voltage".

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  • 10. 
    Which of these involves using the surge protector to limit voltage supplied to a device?  - ProProfs

    Which of these involves using the surge protector to limit voltage supplied to a device? 

    • Blocking 

    • Shorting 

    • Powering 

    • Impedance 

    Correct Answer
    A. Shorting 
    Explanation
    Shorting involves using the surge protector to limit voltage supplied to a device. When a surge protector detects a voltage spike, it diverts the excess voltage to the ground, preventing it from reaching the connected device. This helps protect the device from damage caused by overvoltage.

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  • Current Version
  • Mar 19, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Feb 07, 2019
    Quiz Created by
    Gregorynaomi
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