141. In olden days the type of section adopted in trunk and out fall sewers was__________________? A. Parabolic shaped B. Horse shoe shaped C. Egg shaped D. Circular shaped ✅ The correct answer is option B.
142. The minimum diameter of a sewer is kept __________________? A. 10 cm B. 15 cm C. 20 cm D. 25 cm ✅ The correct answer is option B.
143. The common ratio is the ratio of_______________? A. Net credit sales to average net receivable B. Current assets to current liabilities C. Gross profit to net sales D. Net income to owner’s equity ✅ The correct answer is option B.
144. The process of diffusion of one liquid into the other through a semi-permeable membrane is called _______________? A. viscosity B. osmosis C. surface tension D. cohesion ✅ The correct answer is option B.
145. The formula which accepts the value of rugosity coefficient n = 0.012 to be used in Manning’s formula, is given by______________________? A. Bazin B. Crimp and Bruges C. William-Hazen D. Kutter ✅ The correct answer is option B.
146. Select the correct statement ? A. Local atmospheric pressure depends upon elevation of locality only B. Standard atmospheric pressure is the mean local atmospheric pressure a* sea level C. Local atmospheric pressure is always below standard atmospheric pressure D. A barometer reads the difference be-tween local and standard atmospheric pressure ✅ The correct answer is option B.
147. ‘Cowl’ is provided at___________________? A. Lower end of ventilating column B. Upper end of ventilating column C. Upper end of the manhole D. First step in manhole ✅ The correct answer is option B.
148. The ratio of maximum sewage flow to average sewage flow for mains up to 1 m in diameter, is___________________? A. 1.5 B. 2.0 C. 3.0 D. 4.0 ✅ The correct answer is option B.
149. Disposal to sewage in large cities, is done in__________________? A. Irrigation B. Dilution C. Oxidation D. Purification ✅ The correct answer is option B.
150. What characteristic best describes the cost baseline? A. Total budget for the project B. Time phased budget for the project C. Total budget for the project including the contingency budget D. Total budget for the project including the contingency budget and the management reserve ✅ The correct answer is option B.