🏗️Civil Engineering MCQs
Civil Engineering MCQs
479 MCQs261
The sewers___________________?
AMust be of adequate size to avoid over flow
BMust flow under gravity ½ to ¾ full
CMust be laid at least 2 to 3 m deep to collect /water from the basements
DAll the above
262
In a fully mechanised composting plant, involves________________?
AMechanized receipt
BMechanized segregation
CMechanized pulverising of refuse
DAll of these
263
weight of water, the hydraulic mean depth of the sewer and the bed slope w is the unit of the sewer, then the tractive force exerted by flowing water, is________________________?
Aw r S S
Bw r1/2
Cw r S
Dw r2/3
264
The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is________________?
Ad² (0.011d + 0.785H)/Q
Bd (0.022d + 0.085H)/Q
Cd (0.785d + 0.011H)/Q
Dd (0.285d + 0.011H)/Q
265
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, Is_____________________?
A1.250 D
B1.350 D
C1.425 D
D1.625 D
266
For evaporation and measurement of settable solids, the apparatus used, is________________?
AA jar
BA breaker
CA test tube
DAn Imhoff cone
267
For design of sewers, percentage of sewage discharge is assumed_____________________?
A65 to 70%
B70 to 75%
C75 to 80%
D85%
268
‘Cowl’ is provided at___________________?
ALower end of ventilating column
BUpper end of ventilating column
CUpper end of the manhole
DFirst step in manhole
269
A drop manhole is provided if__________________?
AA sewer drops from a height
BA branch sewer joins the main sewer at higher level
CA lamp is inserted to check obstruction
DNone of these
270
When the flow parameters at any given instant remain same at every point, then flow is said to be____________________?
Aquasi static
Bsteady state
Claminar
Duniform E. static.