3. a single pipe 400 mm in diameter and 400 m long conveys water at the rate of 0.5 m3/sec. find the increase in discharge in m3/sec if another pipe of 200 m lo

3. A single pipe 400 mm in diameter and 400 m long conveys water at the rate of 0.5 m3/sec. Find the increase in discharge in m3/sec if another pipe of 200 m lon9 and 200 mm in diameter is joined parallel with the existing pipe over half of its length. The friction factor for all pipes is the same. (a) 0.9 (b) 0.09 (c)0.04 (d) 0.24 Other: