Question76:-Chlorine usage in the treatment of 20,000 *m~3" of water 5 8 ६0 1೧ a day. Residual chlorine after 10 minutes
contact tune is 0.2 mg/L. The chlorine demand is
A:-0.4 9۷

C:-0.3 mg/L
D:-0.6 mg/L
Correct Answer:- Option-B
Question77:-Peak drainage discharge is obtained when the duration of a rainfall is equal to
കാനില്‍ യ ‏٠‎
‎B:-Gutter flow time
C:-Channel flow time
D:-Time of concentration
Correct Answer:- Option-D
Question78:-The ratio of peak sewage flow to average flow is
ക:-1.8
B:-1.5
6:3
D:-2
Correct Answer:- Option-C
Question79:-If the runoff from a catchment is 800 *'m~3" and the precipitation volume is 3200 *m~(3)" then the impervious
factor for the catchment is
A4
B:-0.25
6:05
D:-0.4
Correct Answer:- Option-B
QuestionB0:-The sensitiveness of spirit level if the bubble moves through 4 mm for a change of inclination of 40 seconds is
A:-0.13 mm
B:-10 mm
C:-160 mm
D:-0.1 mm
Correct Answer:- Option-D
Question81:-For a uniformly graded soil, coefficient of curvature is
A:-Zero
B:-0.5
C:-4
0-1
Correct Answer:- Option-D
Question82:-A body is acted upon by a set of mutually perpendicular shear stresses, the diagonal planes are likely to have
A:-Tension and compression
B:-Tension only
C:-Compression only
D:-Shear only
Correct Answer:- Option-A
Question83:-In an elastic material the stress strain relation is always
கோப்ரா
B:-Non-linear
C:-Linear or non-linear
D:-Parabolic
Correct Answer:- Option-C
Question84:-A cylindrical shell is 3 m long and is having 1 m intemnal diameter and 15 mm thickness. If it is subjected to an
intermal fluid pressure of 1.5 N'mm~2" then hoop stress is
‏25-:ھ‎ ۷/۰۱۲۸2
8:-50 00/000727
:-100 01/000072
0:-125 01/000072
Correct Answer:- Option-B
Question85:-Factor of safety for steel is generally taken as
ಹಿ
B:-1.5