Related Questions

The self cleansing velocity for all sewers in India is usually
A Less than 1.0 m/sec
B 1.0 m/sec to 1.2 m/sec
C 1.5 m/sec to 2.0 m/sec
D 3.0 m/sec to 3.5 m/sec
With self cleansing velocity in sewers
A Silting occurs at bottom
B Scouring occurs at bottom
C Both silting and scouring occur at bottom
D Neither silting nor scouring occurs at bottom
Self-cleansing velocity is
A Velocity at dry weather flow
B Velocity of water at flushing
C Velocity at which no accumulation remains in the drains
D Velocity of water in a pressure filter
In sewers designed with self cleansing velocity,
A The bottom is silted
B The bottom is scoured
C Both silting and scouring occur at the bottom
D Neither silting nor scouring occurs at the bottom
The self-cleansing velocity of water flowing through pipe lines, is
A 2 metres/sec
B 1 metre/sec
C 0.5 metre/sec
D 0.25 metre/sec
If the flame of a miner's safety lamp in the upper layers of the sewer forms an explosive, the sewer certainly contains
A Hydrogen sulphide
B Carbon dioxide
C Methane
D Oxygen
To prevent settling down of sewage both at the bottom and on the sides of a large sewer, self-cleaning velocity recommended for Indian conditions, is
A 0.50 m/sec
B 0.60 m/sec
C 0.70 m/sec
D 0.75 m/sec
If D is the diameter of a circular sewer and D’ is the top horizontal diameter of an equivalent egg shaped section, the relationship which holds good, is
A D’ = 0.64 D
B D’ = 0.74 D
C D’ = 0.84 D
D D’ = 0.94 D
Increasing the original price of an item by 15 percent and then increasing the new price by another 15 percent is equivalent to increasing the original price by
A 32.25%
B 31.00%
C 30.25%
D 35.54%
Increasing the original price of an article by 15 percent and then increasing the new price by 15 percent is equivalent to increasing the original price by --
A 32.25%
B 31.00%
C 30.25%
D 30.00%

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