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Listening Quiz: Xem Xét Kết Quả Thử Nghiệm Tổng Trở Mạch Lỗi Tiếp Địa – Advanced Level
Th4 25, 2025
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bởi
Anna Phạm
trong
Tiếng Anh dành cho Kỹ sư điện (English for Electrical Engineer)
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1.
What is the exact earth fault loop impedance value mentioned by William?
0.45 ohms
0.44 ohms
0.50 ohms
0.54 ohms
Explanation:
William says the impedance is 0.45 ohms.
2.
What is the specified limit for the earth fault loop impedance test?
0.44 ohms
0.45 ohms
0.43 ohms
0.40 ohms
Explanation:
Sarah and William discuss that the limit is 0.44 ohms.
3.
What can be inferred about the test results from the conversation?
They cannot be compared to any limit.
They are slightly above the specification limit.
They are safely below the specification limit.
They are far above the specification limit.
Explanation:
William says the results are borderline, and the value of 0.45 ohms is just over the 0.44-ohm limit.
4.
Why does Sarah ask, ‘Should we retest?’
To suggest that the equipment should be replaced immediately
To confirm whether the borderline result needs to be checked again
To show that the test is no longer important
To ask whether the limit should be changed
Explanation:
She asks about retesting after hearing the result is borderline and just over the limit, showing concern about confirming the reading.
5.
What is the main topic of the conversation?
Replacing all cables in the building
Reviewing a safety test and deciding what to do about a borderline reading
Training employees to tighten connections
Planning a new electrical installation
Explanation:
The speakers discuss an earth fault loop impedance test result, its safety implications, and the need for a retest and possible repairs.
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