Civil Engineering Mcqs

The ratio of maximum sewage flow to average sewage flow for trunk mains having diameters more than 1.25 m, is____________________?

(A) 1.5
(B) 2.0
(C) 3.0
(D) 4.0

Submitted By :Ali Uppal

For non-scouring velocity 5 m/sec, the type of sewers generally preferred to, is____________________?

(A) Cast iron sewers
(B) Cement concrete sewers
(C) Glazed bricks sewers
(D) Stone ware sewers

Submitted By :Ali Uppal

The width of a settling tank with 2 hour detention period for treating sewage 378 cu m per hour, is __________________?

(A) 5 m
(B) 5.5 m
(C) 6.5 m
(D) 7 m

Submitted By :Ali Uppal

The normal values of over flow rates for secondary sedimentation tanks, ranges between__________________?

(A) 25,000 to 35,000 litres/sqm/day
(B) 40,000 to 50,000 litres/sqm/day
(C) 50,000 to 60,000 litres/sqm/day
(D) 80,000 to 10,000 litres/sqm/day

Submitted By :Ali Uppal

If the pH value of sewage is 7__________________?

(A) It is acidic
(B) It is alkaline
(C) It is neutral
(D) None of these

Submitted By :Ali Uppal

For trunk sewers more than 1.25 m in diameter, the ratio of the maximum daily sewage flow to the average daily sewage flow is assumed________________?

(A) 1.5
(B) 2.0
(C) 2.5
(D) 3.0

Submitted By :Ali Uppal

For design purposes, the normal rate of infiltration of ground water into the sewer, is___________________?

(A) 500 litres/km/cm
(B) 1000 litres/km/cm
(C) 1500 litres/km/cm
(D) 2000 litres/km/cm

Submitted By :Ali Uppal

The drop man holes are generally provided in sewers for____________________?

(A) Industrial areas
(B) Large town ships
(C) Hilly town ships
(D) Cities in plains

Submitted By :Ali Uppal

A rain sanitary sewer is constructed to carry_________________ ?

(A) Sanitary sewage
(B) Storm sewage
(C) Surface water
(D) Ground water

Submitted By :Ali Uppal

For house drainage minimum gradient is__________________?

(A) 1 in 60
(B) 1 in 80
(C) 1 in 10
(D) 1 in 400

Submitted By :Ali Uppal

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