Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Surge protector providesa)Low impedance to no...
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Surge protector provides
- a)Low impedance to normal voltage only
- b)High impedance to surge only
- c)High impedance to normal voltage and low impedance to surge
- d)Both 1 and 2 above
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Surge protector providesa)Low impedance to normal voltage onlyb)High i...
A surge protector is an electrical device that is used to protect equipment against power surges and voltage spikes while blocking voltage over a safe threshold (approximately 120 V). When a threshold is over 120 V, a surge protector shorts to ground voltage or blocks the voltage.
Hence we can say that, surge protector provides high impedance to normal voltage and low impedance to surge.
Most Upvoted Answer
Surge protector providesa)Low impedance to normal voltage onlyb)High i...
Understanding Surge Protectors
Surge protectors are crucial devices designed to protect electrical equipment from voltage spikes. To grasp why option 'C' is the correct answer, it's essential to understand how surge protectors function regarding impedance.
Impedance Characteristics
- Normal Voltage:
Surge protectors maintain a high impedance to normal operating voltage. This means that during regular conditions, they do not interfere with the electrical flow, allowing devices to function normally.
- Surge Voltage:
Conversely, surge protectors exhibit low impedance when a voltage surge occurs. This allows excess voltage to be diverted away from sensitive equipment, preventing damage.
Why Option 'C' is Correct
- High Impedance to Normal Voltage:
Surge protectors do not impede the normal voltage; hence, devices can operate efficiently without power loss or disruption.
- Low Impedance to Surge:
During a surge, the low impedance path enables the surge protector to channel the excess energy away, thereby protecting the connected devices.
Conclusion
In summary, surge protectors are designed to have high impedance under normal working conditions and low impedance during surges. This dual characteristic ensures the protection of electrical devices while maintaining their regular operation. Thus, option 'C' accurately represents the operational principles of surge protectors.
Surge protectors are crucial devices designed to protect electrical equipment from voltage spikes. To grasp why option 'C' is the correct answer, it's essential to understand how surge protectors function regarding impedance.
Impedance Characteristics
- Normal Voltage:
Surge protectors maintain a high impedance to normal operating voltage. This means that during regular conditions, they do not interfere with the electrical flow, allowing devices to function normally.
- Surge Voltage:
Conversely, surge protectors exhibit low impedance when a voltage surge occurs. This allows excess voltage to be diverted away from sensitive equipment, preventing damage.
Why Option 'C' is Correct
- High Impedance to Normal Voltage:
Surge protectors do not impede the normal voltage; hence, devices can operate efficiently without power loss or disruption.
- Low Impedance to Surge:
During a surge, the low impedance path enables the surge protector to channel the excess energy away, thereby protecting the connected devices.
Conclusion
In summary, surge protectors are designed to have high impedance under normal working conditions and low impedance during surges. This dual characteristic ensures the protection of electrical devices while maintaining their regular operation. Thus, option 'C' accurately represents the operational principles of surge protectors.
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