railway RRB JE (CBT I + CBT II) Mock Test 2024 Electrician and Wireman Power Systems Transmission and Distribution
In underground cables, the varnished cambric is impregnated with ______ and coated with _______.
1
Synthetic compound rubber; Varnish
2
Cotton cloth; Varnish
3
Silicon steel; Insulating oil
4
Chemically pulped paper ; Varnish