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- Question
The approximate diameter of a water mains for supplying 7.2 mld with a velocity 1.2 m/sec, is
Options- A. 24 cm
- B. 26 cm
- C. 28 cm
- D. 30 cm
- E. 32 cm.
- Correct Answer
- 30 cm
- 1. The order of existence of three portions of water in a reservoir from the bottom to top is
Options- A. useful storage + surcharge storage + dead storage
- B. useful storage + dead storage + surcharge storage
- C. dead storage + useful storage + surcharge storage
- D. surcharge storage + useful storage + dead storage
- E. none of these. Discuss
- 2. Pick up the correct statement from the following :
Options- A. At a particular speed of operation, the head produced decreases with the increase of discharge
- B. At zero discharge, discharge valve remaining closed, the head developed is maximum which is known as shut-off head
- C. At a particular speed the discharge at which efficiency of a pump is maximum, is known as normal discharge
- D. The brake horse power required from the primemover to drive the pump, increases with the increase of discharge
- E. all the above. Discuss
- 3. Aqueducts are generally designed
Options- A. circular
- B. rectangular
- C. horse shoe section
- D. all the above. Discuss
- 4. The nitrate concentration in domestic water supplies, is generally limited to
Options- A. 10 ppm
- B. 15 ppm
- C. 25 ppm
- D. 30 ppm
- E. 45 ppm. Discuss
- 5. Yield of a drainage basin is :
Options- A. run off of the area expressed as instantaneous rate
- B. average run off over a short period
- C. total volume of water flowing annually
- D. all the above. Discuss
- 6. If w is the weight of water per cubic metre, Q is the discharge in cubic metres per sec and H is the total head, the required water horse power of the pump, is
Options- A.
- B.
- C.
- D.
- E. none of these. Discuss
- 7. Hardness of water can be removed by boiling if it is due to
Options- A. calcium bicarbonates
- B. calcium sulphates
- C. calcium chloride
- D. calcium nitrates. Discuss
- 8. To control the growth of algae in reservoirs, the compound which is used, is
Options- A. bleaching powder
- B. copper sulphate
- C. lime solution
- D. alum solution
- E. all the above. Discuss
- 9. Pick up the correct statement from the following :
Options- A. For determination of small colour intensities, tintometer is generally used
- B. The odour of water sample is generally measured by a term called odour intensity
- C. The colour of water sample may be detected by Nessler tube
- D. Specific conductivity of water measures the amount of dissolved salt
- E. All the above. Discuss
- 10. Pick up the wrong nominal internal diameter of cast iron (spun) pipes in mm from the following :
Options- A. 300
- B. 400
- C. 500
- D. 550
- E. 600 Discuss
Water Supply Engineering problems
Search Results
Correct Answer: dead storage + useful storage + surcharge storage
Correct Answer: all the above.
Correct Answer: all the above.
Correct Answer: 45 ppm.
Correct Answer: total volume of water flowing annually
Correct Answer:
Correct Answer: calcium bicarbonates
Correct Answer: copper sulphate
Correct Answer: All the above.
Correct Answer: 550
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