Related Questions

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
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
The minimum diameter of sewer to be adopted is
A 10 cm
B 12.5 cm
C 15 cm
D 25 cm
In R.C. sewer pipes, the percentage longitudinal reinforcement to the cross-sectional area of concrete is kept
A 10.0
B 5.0
C 2.0
D 0.25
Inter-distance between ventilation columns in a sewer line is kept
A 25 to 50 m
B 50 m to 100 m
C 100 m to 150 m
D 150 m to 300 m
The effect of increasing diameter of sewer on the self cleansing velocity is
A To decrease it
B To increase it
C Fluctuating
D Nil
If is the diameter of upper circular portion, the overall depth of New Egg shaped sewer section, is
A 1.250 D
B 1.350 D
C 1.425 D
D 1.625 D
In a shell and tube heat exchanger for a given heat transfer surface area, smaller diameter tubes are favoured as compared to larger diameter ones ; because the smaller diameter tubes
A Are easier to clean
B Are less prone to fouling
C Can be fitted into a smaller shell diameter hence the cost of the heat exchanger would be less
D None of these
The minimum thickness of the cover at the end of a reinforcing bar should not be less than twice the diameter of the bar subject to a minimum of
A 10 mm
B 15 mm
C 20 mm
D 25 mm
Zakia kept on talking here kept on means:____
A maintain
B continued
C carried
D take way

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