28) The traps which are provided at different places in the drain pipe are
Answer is:
Gully traps
Related ISRO Technician-B Plumber Question Paper - 2017 (Set - 1) with Answer Key
Answer is:
All of these
Explanation:
Manholes are generally located at
* All changes of direction of sewer
* All changes of gradient of sewer
* All junctions of different sewers
