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GATE Exam Questions - Engineering

Q1:

The drop manholes are provided in a sewerage system when there is

A change in alignment of sewer line

B change in size of sewers

C change in the elevation of ground level

D change from gravity system to pressure system

ANS:C - change in the elevation of ground level

Option C is correct because Drop manholes are provided to connect high level sewer with low level sewer so, Change in elevation b/w two is necessary.