A. increases
B. decreases
A. remains unaffected
D. unpredictable
✅ The correct answer is option B.
Civil Engineering Mcqs MCQs
182. Bottom openings 15 cm × 15 cm in the standing baffle wall are provided________________?
A. 15 cm c/c
B. 22.5 cm c/c
C. 30 cm c/c
D. 50 cm c/c
✅ The correct answer is option B.
183. To avoid vaporisation in the pipe line, the pipe line over the ridge is laid such that it is not more than_______________?
A. 2.4 m above the hydraulic gradient
B. 6.4 m above the hydraulic gradient
C. 10.0 m above the hydraulic gradient
D. 5.0 above the hydraulic gradient
✅ The correct answer is option B.
184. In a trickling filter_________________?
A. Filtration process is used
B. Biological action is used
C. Neither A. nor B.
D. Both A. and B.
✅ The correct answer is option B.
185. As applied to capitalized asset, the distribution of the initial cost by a periodic changes to operation as in depreciation or the reduction of a debt by either periodic or irregular prearranged programs is called ___________________?
A. Annuity
B. Amortization
C. Capital recovery
D. Annuity factor
✅ The correct answer is option B.
186. In areas where light rains are uniformly distributed throughout the year, the type of sewerage system to be adopted is_______________?
A. Separate system
B. Combined system
C. Partially combined system
D. None of these
✅ The correct answer is option B.
187. The suitable cross-section of sewers to carry combined flow, is__________________?
A. Circular
B. Egg shaped
C. Rectangular
D. Horse shoe shaped
✅ The correct answer is option B.
188. A piece of wood having weight 5 kg floats in water with 60% of its volume under the liquid. The specific gravity of wood is__________________?
A. 0.83
B. 0.6
C. 0.4
D. 0.3
✅ The correct answer is option B.
189. Barometer is used to measure__________________?
A. pressure in pipes, channels etc.
B. atmospheric pressure
C. very low pressure
D. difference of pressure between two points
✅ The correct answer is option B.
190. The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known_________________?
A. Bio-Chemical Oxygen Demand (B.O.D.)
B. Dissolved Oxygen (D.O.)
C. Chemical Oxygen Demand (C.O.D.)
D. None of these
✅ The correct answer is option B.