civil engineering Mcqs
1501. The height of the center of arm of a semaphore signal above the ground is_________________?
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A. 8.5m

B. 7.5 m

C. 5.5m

D. 6.5 m

1502. Dimensions of coefficient of transmissibility are______________?
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A. MLT

B. M L2 T1

C. rvfLT1

D. MLV

1503. The height of the rail for 52 kg rail section is_______________?
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A. 156 mm

B. 143 mm

C. 129mm

D. 172 mm

1504. The ratio of rate of change of the discharge of an outlet to the rate of change of the discharge of distributing channel is called________________?
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A. proportionality

B. sensitivity

C. flexibility

D. setting

1505. Loose jaws of steel trough sleepers are made of___________________?
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A. mild steel

B. cast steel

C. cast iron

D. spring steel
1506. In which of the following trusses, the method of substitution is required for determining the forces in all the members of the truss by graphic statics ?
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A. fink truss

B. king post truss

C. warren truss

D. howe truss

1507. Normally the limiting value of cant is________________?
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A. G/12

B. G/8

C. G/10

D. G/15

1508. In SI units, the units of force and energy are respectively___________________?
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A. Newton and joule

B. kg-wt and joule

C. Dyne and erg

D. Newton and watt

1509. The total gap on both sides between the inside edges of wheel flanges and gauge faces of the rail is kept as_________________?
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A. 10mm

B. 19 mm

C. 16mm

D. 13mm

1510. A system of copianar forces acting on a rigid body can be reduced to________________?
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A. none of the above

B. one force and one couple only

C. one couple only

D. one force only

1511. The net head under which the turbine reaches its peak efficiency at synchronous speed is called________________?
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A. gross head

B. operating head

C. rated head

D. design head
1512. Wear of rails is maximum in weight of___________________?
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A. coastal area

B. tangent track

C. sharp curve

D. tunnels

1513. The shape of a suspended cable for a uniformly distributed load over it is__________________?
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A. catenary

B. circular

C. cubic parabola

D. parabolic
1514. The total capacity of a reservoir is 25 million cubic metres and dead storage is 5 million cubic metres. If the average volume of sediment deposition is 0.10 million cubic metre per year, then the usefulness of the reservoir will start reducing after_________________?
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A. 250 years

B. 50 years

C. 150 years

D. 200 years

1515. Wetted perimeter of a regime channel for a discharge of 64 cumecs as per Laceys theory will be_________?
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A. 38m

B. 19 m

C. 76m

D. 57m

1516. The maximum displacement of a particle executing S.H.M. corresponds to__________________?
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A. zero potential energy and maximum kinetic energy

B. zero kinetic energy and maximum potential energy

C. maximum kinetic energy and maxi-mum potential energy

D. minimum kinetic energy and minimum potential energy

1517. Infiltration capacity_________________?
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A. is a constant factor

B. changes with time

C. changes with location

D. changes with both time and location
1518. Largest dimension of a rail is its________________?
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A. any of the above

B. height

C. head width

D. foot width

1519. The water utilizable by plants is available in soils mainly in the form of________________?
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A. gravity water

B. chemical water

C. capillary water

D. hydroscopic water

1520. According to Khoslas theory, the exit gradient in the absence of a downstream cutoff is_____________?
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A. infinity

B. very large

C. 0

D. unity

1521. The purpose of providing fillet in a rail section is to_________________?
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A. avoid the stress concentration

B. increase the lateral strength

C. reduce the wear

D. increase the vertical stiffness

1522. Force polygon method is applicable for_____________________?
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A. non-concurrent copianar force system

B. a system of parallel forces only

C. any copianar force system

D. concurrent copianar force system
1523. The compensation for curvature on gradient for Meter Gauge is given by________________?
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A. 52.5/R

B. 70/R

C. 105/R

D. re R is radius of curve

E. 35/R

1524. The rainfall on five successive days were measured as 100 mm, 80 mm, 60 mm, 40 mm and 20 mm respectively. If the infiltration index or the storm loss rate for the catchment area is earlier estimated as 50 mm/day, the total surface run off will be________________?
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A. 50 mm

B. 60 mm

C. 90 mm

D. 140 mm

1525. Yellow lighthand signal indicates____________________?
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A. none of the above

B. proceed cautiously

C. stop

D. proceed

1526. Which of the following canal structures is used to remove surplus water from an irrigation channel into a natural drain ?
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A. canal regulator

B. canal outlet

C. canal escape

D. canal fall

1527. Metal sleepers are superior to wooden sleepers with respect to________________?
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A. cost

B. track circuiting

C. life

D. fastening

1528. A train is hauled by 4-8-2 locomotive. The number of driving wheels in this locomotive is_________________?
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A. 12

B. 14

C. 8

D. 4

1529. A disc of mass 4 kg, radius 0.5m and moment of inertia 3 kg-m2 rolls on a horizontal surface so that its center moves with speed 5 m/see. Kinetic energy of the disc is ___________________?
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A. 150 J

B. 50 J

C. 400 J

D. 200 J
1530. A runoff river plant is____________?
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A. a medium head scheme

B. none of the above

C. a low head scheme

D. a high head scheme

1531. A cable loaded with 10 kN/m of span is stretched between supports in the same horizontal line 100 m apart. If the central dip is 10 m, then the maximum and minimum pull in the cable respectively are____________________?
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A. 1436.2 kN and 1500 kN

B. 1346.3 kN and 1250 kN

C. 1436.2 kN and 1250 kN

D. 1346.3 kN and 1500 kN

1532. Two circular discs of same weight and thickness are made from metals having different densities. Which disc will have the larger rotational inertia about its central axis ?
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A. disc with larger density

B. disc with smaller density

C. both discs will have same rotational inertia

D. none of the above

1533. The value of Sodium Absorption Ratio for high sodium water lies between________________?
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A. 18 to 26

B. 0 to 10

C. 10 to 18

D. 26 to 34

1534. The best unit duration of storm for a unit hydrograph is________________?
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A. equal to basin lag

B. one-fourth of basin lag

C. one-half of basin lag

D. 1 hour

1535. A ball is dropped from a height of 16 m on a horizontal floor. If it rebounds to a height of 9 m after striking the floor, the coefficient of restitution between ball and floor is_____________________?
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A. 3/4

B. 3-Apr

C. 4-Jan

D. 3-Feb

1536. Minimum depth of ballast cushion for a Broad Gauge wooden sleeper of size 275x25x13 cm with 75cm sleeper spacing is________________?
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A. 30cm

B. 25 cm

C. 20 cm

D. 15 cm

1537. If the risk of a flood occurring in the next 10 years is accepted to 10%, then the return period for design should be__________________?
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A. 1 + (0.9)010

B. 1/(1+ 0.9010)

C. 1/(1-0.910)

D. 1 (0.9)l0

1538. Which of the following methods of applying water may be used on rolling land ?
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A. free flooding

B. furrow flooding

C. check flooding

D. boarder flooding
1539. A particle is executing simple harmonic motion in a line 1.0 m long. If the time of one complete vibration is 1 sec, then the maximum velocity of the particle is___________________?
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A. 1.57 m/sec

B. 3.14 m/sec

C. 6.28 m/sec

D. 1.00 m/sec

1540. For developing thinly populated areas, the correct choice of gauge is_________________?
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A. Broad Gauge

B. any of the above

C. Narrow Gauge

D. Meter Gauge

1541. If the intensity of rainfall is more than the infiltration capacity of soil, then the infiltration rate will be______________?
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A. equal to rate of rainfall

B. more than rate of rainfall

C. more than infiltration capacity

D. equal to infiltration capacity
1542. A particle moves in a straight line and its position is defined by the equation x = 6 t2 t3 where t is expressed in seconds and x in meters. The maximum velocity during the motion is_________________?
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A. 12 m/sec

B. 6 m/sec

C. 48 m/sec

D. 24 m/sec

1543. The minimum size of stone that will remain at rest in a channel of longitudinal slope S and hydraulic mean depth R is given by______________?
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A. 15 RS

B. 4RS

C. 11 RS

D. 7RS

1544. Head width of 52 kg rail section is________________?
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A. 67mm

B. 66.7mm

C. 72.33 mm

D. 61.9 mm

1545. A cylinder will slip on an inclined plane of inclination 0 if the coefficient of static friction between plane and cylinder is_____________________?
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A. less than (2/3) tan 0

B. less than (1/3) sin 6

C. less than (2/3) sin 6

D. less than (1/3) tan 0
1546. The runoff increases with________________?
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A. increase in infiltration capacity

B. increase in intensity of rain

C. increase in permeability of soil

D. all of the above

1547. Number of switches provided on a Gaunt-letted track is_______________?
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A. 1

B. 3

C. 2

D. none of the above
1548. Which of the following canal outlets maintains a constant discharge ?
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A. rigid module

B. none of the above

C. flexible outlet

D. non-modular outlet

1549. A raingauge should preferably be fixed________________?
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A. under the tree

B. in a closed space

C. in an open space

D. near the building

1550. When the rail ends rest on a joint sleeper, the joint is termed as_________________?
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A. supported rail joint

B. suspended rail joint

C. base joint

D. bridge joint