SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Environmental Engineering Water Supply

Consider the following valves in a water distribution system.

A. Check valve

B. Pressure-reducing valve

C. Air relief valve

D. Scour valve

E. Sluice valve

Which of these works automatically?

1
A, C and D
2
B, D and E
3
C, D and E
4
A, B and C
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