- Once in 4 months
- Once in 3 Months
- Once in 6 months
- Once in a year
- None of these
- 120 dB (A)
- 130 dB (A)
- 140 dB (A)
- 115 dB (A)
- 90 dB (A)
- 85 dB (A)
Q) Switch gear & protective equipments shall be checked?
Solution:
Switch gear & protective equipments shall be checked Once in 3 Months
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