Description : The gradient of sewers depends upon A. Velocity of flow B. Diameter of the sewer C. Discharge D. All the above
Last Answer : ANS: D
Description : If the diameter of a sewer is 100 mm, the gradient required for generating self cleansing velocity is A. 1 in 60 B. 1 in 100 C. 1 in 120 D. None of these
Last Answer : ANS: A
Description : If the diameter of sewer is 225 mm, the gradient required for generating self cleansing velocity, is A. 1 in 60 B. 1 in 100 C. 1 in 120 D. None of these
Last Answer : ANS: C
Description : If the diameter of a sewer is 150 mm, the gradient required for generating self cleansing velocity, is A. 1 in 60 B. 1 in 100 C. 1 in 120 D. None of these
Last Answer : ANS: B
Description : The height of formation depends upon the a) Ground contours and the gradient adopted* b) Ground contour only c) Gradient adopted only d) Rainfall intensity over the year
Last Answer : a) Ground contours and the gradient adopted*
Description : A sewer pipe contains 1 mm sand particles of specific gravity 2.65 and 5 mm organic particles of specific gravity 1.2, the minimum velocity required for removing the sewerage, is A. 0.30 m/sec B. 0.35 m/sec C. 0.40 m/sec D. 0.45 m/sec
Description : Sewerage system of a railway colony may be (a) Combined system (b) Separate system (c) Partially combined system (d) Any of them*
Last Answer : (d) Any of them*
Description : For achieving self-cleaning velocity, a minimum velocity of ---- mps. Is desirable for design peak flow (a) 0.6 mps (b) 0.8 mps* (c) 1.0 mps (d) 2.0 mps
Last Answer : b) 0.8 mps*
Description : 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
Description : Assertion A.: The determination of pH value of sewerage is important. Reason (R): The efficiency of certain treatment methods depends upon the availability of pH value. A. Both A and R are true and R is the ... correct explanation of A C. A is true but R is false D. A is false but R is true
Description : The angle subtended by the surface of sewer water with partial flow, at sewer centre is 120°, the depth of sewerage is A. 20 cm B. 25 cm C. 40 cm D. 50 cm
Description : The sewerage system consists of A. House sewer B. Lateral sewer C. Branch sewer D. All of these
Description : The diameter of a domestic sewer pipe laid at gradient 1 in 100 is recommended (A) 100 mm (B) 150 mm (C) 200 mm (D) 175 mm
Last Answer : (B) 150 mm
Description : fter storage, strength of cement a) Decreases* b) Increases c) Remains same d) Depends upon the type of cement
Last Answer : a) Decreases*
Description : The maximum dry density to which a soil may be compacted to depends upon a) Soil water content * b) The process of compaction c) The voids ratio d) Is independent of the type of soil
Last Answer : a) Soil water content *
Description : Terracotta is used in buildings for a) Storage b) Insulation c) Ornamental work* d) Sewer pipe
Last Answer : c) Ornamental work*
Description : The arrangement made for passing the sewer line below an obstruction below the hydraulic gradient lines called A. Inverted syphon B. Depressed sewer C. Sag pipe D. all of these
Description : The reduced levels of the string at the consecutive sight rails A and B are 203.575 m, 203.475 m respectively. If the difference of their R.D.s is 10 m, the gradient of the sewer line is A. 1 in 100 upward B. 1 in 500 upward C. 1 in 100 downward D. 1 in 503 upward
Description : depends upon The Chezy’s constant C in the formula V = C A. Size of the sewer B. Shape of the sewer C. Roughness of sewer surface D. All the above
Description : Dust collection efficiency of a cyclone separator depends upon its (A) Diameter (B) Inlet gas velocity (C) Overall height (D) All (A), (B) & (C)
Last Answer : (D) All (A), (B) & (C)
Description : The project report of final location survey gives tabulated statement of the following (a) Curve abstract (b) Gradient abstract (c) Bridge abstract (d) Important bridges (e) Station machinery (f) Stations and stations sites (g) All the above*
Last Answer : g) All the above*
Description : Piping in a soil mass is a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit* b) Caused due to very low exit gradient c) ... connected pores d) Due to loss of the strength of cohesion less soil because of upward flow of of water
Last Answer : a) Erosion of subsoil by the high velocities of flow of water through it when such velocities exceed a certain limit*
Description : The catch water drains are provided in the a) Formation in the embankment b) Formation in cutting* c) Zero fills formation d) Steep gradient
Last Answer : b) Formation in cutting*
Description : The gradient of a platform is generally (a) 1 in 1000 (b) 1 in 750 (c) 1 in 500* (d) 1 in 250
Last Answer : (c) 1 in 500*
Description : The recommended maximum gradient in the year for B.G is- (a) 1 in 1000 (b) 1 in 1200* ( c) 1 in 1500 (d) 1 in 1800
Last Answer : (b) 1 in 1200*
Description : The maximum gradient in station yards should be ……. Unless special safely devices are adopted and/or special rules enforced. (a) 1 in 400* (B) 1 in 500 (c) 1 in 1000 (D) 1 In 600
Last Answer : (a) 1 in 400*
Description : In a semi permanent (BG) diversion the gradient should not be steeper then (a) 1 in 75 (b) 1 in 125 (c) 1 in 100* (d) 1 in 150
Last Answer : (c) 1 in 100*
Description : In a semi permanent (BG) diversion the gradient should not be steeper then (a) 1 in 75 (b) 1 in 125 (c) 1 in 100 * (d) 1 in 150
Last Answer : (c) 1 in 100 *
Description : The ruling gradient is 1 in 200 on a section of the BG track. If the track is laid in that place at a curve of 5 degrees then the allowable ruling gradient on the curve will be a) 1 in 16.7 b) 1 and 400 c) 1 in 240 d) 1 in 333*
Last Answer : d) 1 in 333*
Description : Rising gradient followed by a falling gradient is known as a) Rulling gradient b) Momentum gradient* c) Pusher graient d) Aangular gradient
Last Answer : b) Momentum gradient
Description : Steep gradients which need extra engine for hauling is known as a) Pusher gradient* b) Rulling Gradient c) Reasonable gradient d) Momentum gradient
Last Answer : a) Pusher gradient
Description : For a peak discharge of 0.0157 cumec, with a velocity of 0.9 m/sec, the diameter of the sewer main, is A. 10 cm B. 12 cm C. 15 cm D. 18 cm
Description : In Chezy’s formula V = C rs for calculating the velocity of flow in circular sewer of diameter running full, the value of hydraulic mean radius is A. D B. D /2 C. D/3 D. D/4
Description : Pick up the correct statement from the following: A. The sewer pipes of sizes less than 0.4 m diameter are designed as running full at maximum discharge B. The sewer pipes of sizes greater than 0.4 m ... discharge C. The minimum design velocity of sewer pipes is taken as 0.8 m/sec D. All the above
Description : A sewer has a diameter of 300 mm and slop of 1 in 400. While running full it has a mean velocity of 0.7 m/s. If both the diameter and slope are doubled (to respectively be 600 mm and 1 in 200), what will be the changed mean velocity ... 's formula. (a) 1.59 m/s (b) 2.80 m/s (c) 0.90 m/s (d) 1.00 m/s
Last Answer : (a) 1.59 m/s
Description : Assertion A.: The minimum self cleansing velocity in the sewer, at least once a day, must be generated. Reason (R): If certain deposition takes place and is not removed, it obstructs free flow and causes further ... correct explanation of A C. A is true but R is false D. A is false but R is true
Description : Pick up the correct statement from the following: A. The water supply pipes carry pure water free from solid particles B. The water supply pipes get clogged if flow velocity is less than self ... carried up and down the hills and valleys D. The sewer pipes are generally laid along level hills
Description : Indicate which of the statement is incorrect (a) The detritus tank is type of a grit chamber (b) In detritus tank, velocity of flow is further reduced (c) Grit chambers are provided in the sewage ... to remove the heavier inorganic matter as grit, sand etc. from the sewage (d) None of them*
Last Answer : (d) None of them*
Description : Selection of the routes, of highways depends upon (A) Feasibility of attaining ruling gradient (B) Avoidance of cutting hard rocks (C) Minimum number of bridges (D) All the above
Last Answer : Answer: Option D
Description : The capacity of a pneumatic conveying system depends upon the (A) Bulk density of materials (B) Pressure of the conveying air (C) Diameter of the conveying line (D) All (A), (B) and (C)
Last Answer : (D) All (A), (B) and (C)
Description : Sewer manholes are generally provided at A. The change of gradient B. The change of direction C. The junctions of sewers D. All of these
Description : A sewer is laid from a manhole to a manhole , 250 m away along a gradient of 1 in 125. If the reduced level of the invert at is 205.75 m and the height of the boning rod is 3 m, the reduced level of the sight rail at , is (A) 208.75 m (B) 202.75 m (C) 206.75 m (D) 211.75 m
Last Answer : (C) 206.75 m
Description : Pressure gradient in the pipe flow is influenced by the (A) Diameter of pipe (B) Velocity of the fluid (C) Density & viscosity of the fluid (D) All (A), (B) and (C)
Description : nternal diameter of thimble in conventional type of crucible is? (i) 14-16 mm (i) 16-18 mm (iii) 18-20 mm* (iv) 20-22 mm
Last Answer : (iii) 18-20 mm*
Description : Surface preparation for Metallising the abrasives used for final cleaning is a) Chilled iron grit G.24, as defined in BS : 2451 b) Washed salt free angular silica sand of mesh size 12 to 30 with a minimum of 40% retained on a 20 mesh c) either (a) or (b) * d) d) neither (a) or (b)
Last Answer : c) either (a) or (b) *
Description : The side slope of formation in embankment /cutting depends on a) Shearing strength of soil and its angle of repose* b) Angle of repose c) Bearing capacity of the soil d) Optimum moisture content of the soil
Last Answer : a) Shearing strength of soil and its angle of repose*
Description : In cement pressure grouting G.I pipes of diameter …… and ……length, should be fixed in drilled holes a) 12 to 20 mm, 200 mm* b) 12 to 20 mm, 300 mm c) 12 to 25 mm, 500 mm d) 20 to 25 mm, 300 mm
Last Answer : a) 12 to 20 mm, 200 mm*
Description : The minimum pitch of rivets of diameter ‘d’ in steel plates shall be a) 2 x d b) 3 x d c) 1.75 x d d) 2.5 x d*
Last Answer : d) 2.5 x d*
Description : The minimum edge distance for rivets of diameter ‘d’ in steel plates shall be a) 2 x d b) 3 x d c) 1.5 x d* d) 2.5 x d
Last Answer : c) 1.5 x d*
Description : For end bearing piles, the minimum spacing of piles of diameter ‘d’ shall be a) 3d b) 2d c) 2.5d* d) 5d
Last Answer : c) 2.5d*