PLUMBER,KERALA WATER AUTHORITY 08-11-2016 PSC SOLVED PAPER

PLUMBER,KERALA WATER AUTHORITY & TRADESMAN,TECHNICAL EDUCATION

EXAM DATE:08-11-2016
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1.Which valve is provided at intervals in long mains to prevent back pressure on the pump and in raising lines to prevent backflow of water?

A.Gate valve

B.Mud valve

C.Reflux valve*

D.Pressure relief valve

Ans:C

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