Civil Engineering Archives

801. The dimensions of a rectangular settling tank are: length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is_____________________?

A. 204 cu.m

B. 208 cu.m

C. 212 cu.m

D. 216 cu.m

✅ The correct answer is option D.

802. The sewerage system consists of______________________?

A. House sewer

B. Lateral sewer

C. Branch sewer

D. All of these

✅ The correct answer is option D.

803. The value of mass density in kgsecVm4 for water at 0°C is_______________?

A. 1

B. 1000

C. 100

D. 101.9

✅ The correct answer is option D.

804. What is defined as the current assets minus inventories and prepaid expenses ?

A. Profit margin ratio

B. Price-earnings ratio

C. Return of investment ratio

D. Quick ratio

✅ The correct answer is option D.

805. Choose the wrong statement?

A. any weight, floating or immersed in a liquid, is acted upon by a buoyant force

B. Buoyant force is equal to the weight of the liquid displaced

C. The point through which buoyant force acts, is called the center of buoyancy

D. Center of buoyancy is located above the center of gravity of the displaced liquid v

✅ The correct answer is option D.

806. Bio-chemical oxygen demand (BOD) for the first 20 days in generally referred to_______________?

A. Initial demand

B. First stage demand

C. Carbonaceous demand

D. All of these

✅ The correct answer is option D.

807. The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called ____________________?

A. Inverted syphon

B. Depressed sewer

C. Sag pipe

D. all of these

✅ The correct answer is option D.

808. The difference of pressure between the inside and outside of a liquid drop is_____________?

A.p = Txr

B.p = T/r

C. p = T/2r

D.p = 2T/r

✅ The correct answer is option D.

809. In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept________________?

A. 10.0

B. 5.0

C. 2.0

D. 0.25

✅ The correct answer is option D.

810. Oxidation process results in the formation of___________________?

A. Carbon dioxide

B. Nitrates

C. Sulphates

D. All the above

✅ The correct answer is option D.