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Listening Quiz: Thử Nghiệm Điện Trở Cách Điện Của Cáp Mới – Easy Level
Th10 17, 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 conversation mainly about?
Installing a new power generator
Ordering new testing equipment
Planning a cable insulation resistance test
Repairing damaged office wiring
Explanation:
John and Sarah discuss the new cable, the insulation test, the required resistance value, and safety steps before energising it.
2.
What minimum resistance should the cable have?
Below one megaohm
Above one megaohm
Above ten megaohms
Exactly one ohm
Explanation:
John says, ‘It should be above one megaohm.’
3.
What does Sarah remind John to do before testing?
Replace the cable immediately
Energise the cable first
Disconnect the cable
Record the results in a logbook
Explanation:
Sarah says, ‘Make sure the cable is disconnected before testing.’
4.
What can be inferred about the test results if the resistance is below the required level?
The equipment is definitely broken
The cable is already energised
The test can be ignored
The cable will need to be fixed
Explanation:
Sarah says, ‘If it is below, we must fix it,’ which means a low resistance result requires repair.
5.
Why does Sarah mention that the test is important before energising?
To suggest that the cable is already safe without testing
To tell John to postpone the test for later
To ask John to order a different cable
To stress that the cable must be checked for safety first
Explanation:
Sarah is emphasizing that the insulation test must be done before energising, showing it is a safety requirement.
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Tiếp theo:
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