If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is
A. 1880 kilo litres
B. 2880 kilo litres
C. 3880 kilo litres
D. 4880 kilo litres
Answer: Option B
This Question Belongs to Civil Engineering >> Water Supply Engineering
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Given- Number of places- 4 nos
Population- 40 Lakhs
Duration- 4 hr
No. of steams- 3 nos (Discharge of each steams= 1100 L/minute)
Solution :
Total Quantity of water required = 4(places) X 3(steams) X 1100 (L/min) X 60 X 4 (hours)
= 3168 kilo liters ~ 2880 kiloliters (According to options take nearest value)
Satpal is correct
Which formula have use to solve problem
Total quantity of water required = No of fires x Discharge x Time of each fire.
= 4 x (3 x 1000) x (4 x 60) = 2880000 liters = 2880 kilo liters. (where, 1000 liters/minute is discharge of each stream)