Q. For estimating the peak run off the rational formula Q = 0.0278 KpA was evolved by

View solution

Q. Pick up the correct statement from the following :

View solution

Q. Pick up the correct statement from the following :

View solution

Q. In sewers the velocity of flow should not be

View solution

Q. 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

View solution

Q. If a paper moistened with lead acetate for five minutes when placed in manhole turns black. The sewer certainly contains

View solution

Q. The design period of sewage treatment works in normally

View solution

Q. The porosity of sediments in sewer pipes, is usually taken as

View solution

Q. The sewer which received discharge from two or more main sewers, is known as

View solution

Q. A well oxidized sewage contains nitrogen mainly as

View solution

Q. A safety lamp when inserted in the upper portion of a manhole causes flames. It indicates the presence of

View solution

Q. Assertion (A) : A free board of 0.3 m is provided above the top sewage line in septic tanks. Reason (R) : It helps to accommodate the scum in the septic tank.

View solution

Q. Pick up the incorrect statement from the following :

View solution

Q. Pick up the correct statement from the following :

View solution

Q. You are asked to design sewer pipes of diameters 0.4 m to 0.9 m at maximum flow, you will assume the sewer flow running at

View solution

Q. For sewer mains of 0.5 to 1 m diameter, the ratio of maximum daily sewage flow to the average daily sewage flow is assumed

View solution

Q. D is the diameter of a circular sewer and α is the side of a square section sewer. If both are hydraulically equivalent, the relationship which holds good, is

View solution

Q. For detecting the nitrites in the sewage, the matching colour may be developed by adding

View solution

Q. The suitable cross-section of sewers to carry combined flow, is

View solution

Q. If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity, is

View solution