Physics · Electrical Components
In the construction of underground power cables, varnished cambric is an insulation material made of ________ that is impregnated and coated with ________.
- 1chemically pulped paper; varnish
- 2silicon steel sheet; insulating oil
- 3cotton cloth; varnish✓
- 4synthetic rubber compound; varnish
Correct answer
cotton cloth; varnish
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