railway RRB JE (CBT I + CBT II) Mock Test 2024 Power Systems Transmission and Distribution Underground Cables
In vulcanised Indian Rubber (VIR)-type insulating material, the sulphur content is _________.
1
3% to 5%
2
0.1% to 0.5%
3
10% to 15%
4
0.7% to 1.5%