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Objective Questions on Civil Engineering | Multiple Choice Questions  | Civil Engineering Quiz | MCQ

1 >>When a body is totally or partially immersed in a fluid, it is buoyed up by a force equal to ?
  • (A) weight of the body
  • (B) weight of the fluid displaced by the body
  • (C) weight of the body and fluild displaced by the body
  • (D) difference of weights of the fluid displaced and that of the body

2 >>If the total head of the nozzle of a pipe is 37.5 m and discharge is 1 cumec, the power generated is ?

  • (A) 400 H.P.
  • (B) 450 H.P.
  • (C) 500 H.P.
  • (D) 550 H.P
3 >>The phenomenon occuring in an open channel when a rapidly flowing stream abruptly changes to a slowly flowing stream causing a distinct rise of liquid surface, is ?
  • (A) water hammer
  • (B) hydraulic jump
  • (C) critical discharge
  • (D) none of these
4 >>The horizontal component of the force on a curved surface is equal to ?
  • (A) weight of liquid vertically below the curved surface
  • (B) force on a vetical projection of the curved surface
  • (C) product of pressure at its centroid and the area
  • (D) weight of liquid retained by the curved area
5 >>The radius of gyration of the water line of a floating ship is 4 m and its metacentric height is 72.5 cm. The period of oscillation of the ship, is ?
  • (A) ?
  • (B) 2?
  • (C) 3?
  • (D) 4?
6 >>Pick up the correct statement regarding Borda's mouth piece running full from the following : ?
  • (A) Theoretical velocity at the outlet is 2gH
  • (B) Coefficient of velocity is 1/2
  • (C) Coefficient of contraction is 1
  • (D) All the above
7 >>Differential manometers are used to measure ?
  • (A) pressure in water channels, pipes, etc.
  • (B) difference in pressure at two points
  • (C) atmospheric pressure
  • (D) very low pressure
8 >>A tank 4m x 3m x 2m containing an oil of specific gravity 0.83 is moved with an acceleration g/2 m sec2.The ratio of the pressures at its bottom when it is moving vertically up and down, is ?
  • (A) 2
  • (B) 3
  • (C) 43102
  • (D) 43103
9 >>Highest dam in India, is ?
  • (A) Bhakra dam
  • (B) Hirakund dam
  • (C) Nagarjuna Sagar dam
  • (D) Iddiki dam

10 >>Borrow pits should preferably be located in ?
  • (A) field on the left side of the canal
  • (B) field on the right side of the canal
  • (C) fields on both sides of the canal
  • (D) central half width of the section of the canal
11 >>Irrigation canals are generally aligned along ?
  • (A) ridge line
  • (B) contour line
  • (C) valley line
  • (D) straight line
12 >>The length of a meander is the distance along the river between the tangent point of one curve to the tangent point of ?
  • (A) reverse curve
  • (B) next curve of the same order
  • (C) reverse curve plus the width of the river
  • (D) none of these
13 >>Pick up the incorrect statement from the following ?
  • (A) Side walls of a venturi head flume are splayed out from the end of the throat at 1 : 10 for a length of 4.5 m
  • (B) Length of side walls should be such that the width of the flume is made equal to 2/3rd the bed width of the distributary
  • (C) Once the width of the flume becomes 2/3rd of the width of the distributary, the splayed walls are increased to 1 in 3 to get full bed width
  • (D) None of these
14 >>The difference in level between the top of a bank and supply level in a canal, is called ?
  • (A) berm
  • (B) free board
  • (C) height of bank
  • (D) none of these
15 >>F.S.L. of a canal at its head with respect to parent channel is kept ?
  • (A) at the same level
  • (B) 15 cm lower
  • (C) 15 cm higher
  • (D) none of these.
16 >>The measure to remove water logging of land, is ?
  • (A) to reduce percolation from canals and water courses
  • (B) to increase outflow from the ground water reservoir
  • (C) both (a) and (b)
  • (D) neither (a) nor (b)
17 >>Attracting groynes are built ?
  • (A) perpendicular to the bank
  • (B) inclined down stream
  • (C) inclined up stream
  • (D) none of these
18 >>Retrogression of the bed level of a river downstream a weir, occurs due to ?
  • (A) heavy impact of water
  • (B) increase of the bed level
  • (C) less percentage of silt
  • (D) soft soil strata
19 >>According to G.W. Pickles the effect of confining the flood water of a river between levee, is to increase ?
  • (A) rate of flood wave
  • (B) water surface elevation during floods
  • (C) maximum discharge
  • (D) surface slope of streams above the leveed portion

20 >>In a canal syphon, the flow is ?
  • (A) under atmospheric pressure
  • (B) pipe flow
  • (C) with critical velocity
  • (D) under negative pressure
1 >>A waterlogged land is found suitable for cultivation due to ?
  • (A) ease of tillage for preparation of the field for optimum condition of germination
  • (B) absence of aeration of soil from root zone of the plant
  • (C) regular supply of water to plants from the water table by capillary action
  • (D) none of these
2 >>When a canal and a drainage approach each other at the same level, the structure so provided, is ?
  • (A) an aqueduct
  • (B) a syphon
  • (C) a level crossing
  • (D) inlet and outlet
3 >>For smooth entry of water in a canal, the angle between head regulator and water is generally kept ?
  • (A) 80°
  • (B) 90°
  • (C) 110
  • (D) 120°
4 >>Pick up the incorrect statement from the following: ?
  • (A) In free flooding irrigation, water is admitted at one corner of a field and is allowed to spread over the entire area
  • (B) In check method of irrigation, the field is divided into smaller compartments and water is admitted to each in turn
  • (C) In furrow irrigation water is admitted between the rows of plants in the field
  • (D) None of these
5 >>In a Sarda type fall, the rectangular crest, may be used for discharge upto ?
  • (A) 6 cumecs
  • (B) 10 cumecs
  • (C) 14 cumecs
  • (D) 20 cumecs
6 >>When a canal is carried over a natural drainage, the structure provided, is known as ?
  • (A) syphon
  • (B) aqueduct
  • (C) super passage
  • (D) syphonaqueduct
7 >>For the stability of a structure against seepage pressure according to Khosla's creep theory, the critical gradient is ?
  • (A) zero
  • (B) 0.25
  • (C) 0.5
  • (D) 1
8 >>Groynes are generally built ?
  • (A) perpendicular to the bank
  • (B) inclined up stream up to 30°
  • (C) inclined down stream upto 30°
  • (D) all the above
9 >>The top of the capillary zone ?
  • (A) lies below the water table at every point
  • (B) lies above the water table at every point
  • (C) coincides the water table at every point
  • (D) none of these
10 >>Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less ?
  • (A) populated area
  • (B) alkaline area
  • (C) forest area
  • (D) fallow land
11 >>Pick up the correct statement from the following ?
  • (A) In a level crossing, a crest with its top at the canal F.S.L. is provided across the drainage at its upstream junction with canal
  • (B) In a level crossing a regulator is provided across the drainage at its downstream
  • (C) In a level crossing, a cross regulator is provided on the canal below the crossing
  • (D) All the above
12 >>For the design of major hydraulic structures on the canals, the method generally preferred to, is based on ?
  • (A) Bligh's theory
  • (B) Electrical analogy method
  • (C) The relaxation method
  • (D) Khosla's method of independent variables
13 >>For designing the venturi head, ?
  • (A) width of the throat should not be less than onethird of the bed width of main canal
  • (B) minimum throat width should not be less than 60 cm
  • (C) length of the throat should be 2.5 times the depth measured to F.S.L. in the main canal
  • (D) all the above
14 >>The sinuosity of a meander is the ratio of ?
  • (A) meander length and the width of meander
  • (B) meander length and half width of the river
  • (C) curved length and the straight distance
  • (D) none of these
15 >>The top soil of a water logged field becomes more alkaline and infertile if its pH value is ?
  • (A) 6
  • (B) 8
  • (C) 10
  • (D) 11
16 >>The main function of a diversion head works of a canal from a river, is ?
  • (A) to remove silt
  • (B) to control floods
  • (C) to store water
  • (D) to raise water level
17 >>When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called ?
  • (A) syphon
  • (B) aqueduct
  • (C) super passage
  • (D) syphonaqueduct
18 >>For the conditions enumerated to provide a crossing at C1 You will probably provide ?
  • (A) an aqueduct
  • (B) a superpassage
  • (C) a syphon aqueduct
  • (D) none of these
19 >>If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle ? with horizontal, the perimeter of the canal is ?
  • (A) R(? + tan ?)
  • (B) 2R(? + tan ?)
  • (C) R(? + cos ?)
  • (D) 2R(? + cos ?)
20 >>The crest level of a canal diversion head work, depends upon ?
  • (A) F.S.L. of the canal
  • (B) discharge perimeters
  • (C) pond level
  • (D) all the above


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