- 10000 volts/6600 volts
- 12000 volts/6500 volts
- 15000 volts/6300 volts
- 250 volts/650 volts
- None of these
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
Where voltage exceeding 250 volts but not exceeding 650 volts direct current system is used?
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