Civil Engineering Association - Mock GATE Exam
65 Questions
| Total Attempts: 102
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Questions and Answers
- 1.The alluvial soil deposit consisting of mixture of sand, silt and clay is referred as
- A.
Lacustrine soil
- B.
Loess
- C.
Loam
- D.
Talus
- 2.The saturated sand deposit is having moisture content of 20% and specific gravity of particles is 2.6. If the void ratios in loosest and densest states are 0.76 and 0.36 respectively, its relative density is
- A.
60%
- B.
50%
- C.
70%
- D.
47%
- 3.A soil has discharge velocity of 6x10-7 m/sec and void ratio of 0.50. Its seepage velocity is
- A.
36x10-7 m/sec
- B.
12x10-7 m/sec
- C.
18x10-7 m/sec
- D.
24x10-7 m/sec
- 4.The void ratios of a clay sample at its liquid limit, plastic limit and dry state are 1.62, 0.60 and 0.48 respectively. If the specific gravity of soil grains is 2.7, its shrinkage limit is
- A.
60%
- B.
22.22%
- C.
17.78%
- D.
14.28
- 5.Isochrone indicates
- A.
Same excess pore pressure line
- B.
Excess Pore pressure variation line at a time
- C.
Hydrostatic pressure variation line at a time
- D.
Same compressibility line
- 6.A highway embankment is being built by compacting borrow soil at dry density of 19.20 kN/m3. The soil at borrow area is at a dry density of 16 kN/m3. The number of trips required for a truck with its capacity of 6 m3 to form 100 m3 of embankment is
- A.
5
- B.
6
- C.
14
- D.
20
- 7.Diamond core drilling is suitable in
- A.
Soft clay
- B.
Dense sand
- C.
Rock
- D.
Cumulose soil
- 8.Dilatancy correction to SPT N – value is applied when the observed N – value is
- A.
Less than 10
- B.
10 - 15
- C.
Less than 5
- D.
Greater than 15
- 9.The coefficient of earth pressure for at rest condition is 0.50. The ratio of passive and active earth pressure coefficients is
- A.
3
- B.
1/3
- C.
9
- D.
1/9
- 10.The factor of safety of an infinite slope in dry cohesionless soil upon submergence
- A.
Remains same
- B.
Reduced by 50%
- C.
Reduced by 25%
- D.
Reduced by 100%
- 11.The negative skin friction develops over the pile shaft when
- A.
Pile settles more than soil
- B.
Soil settles more than pile
- C.
Pile is rigid
- D.
Piles are below water table
- 12.Dynamic pile formulae are useful to calculate the capacity of
- A.
Bored piles
- B.
Driven piles
- C.
Timber piles
- D.
Tension piles
- 13.The angle of projection at which the horizontal range and maximum height of a projectile are equal to
- A.
360
- B.
45°
- C.
56°
- D.
76°
- 14.A bucket full of water and weighing 75 N is pulled from a well 20 m deep. There is a small hole in the bucket through which water leaks at a constant rate of 2 N/m. The total workdone in pulling the bucket up the well.
- A.
1250 N
- B.
1100 N
- C.
1600 N
- D.
750 N
- 15.A cantilever beam of length l is loaded with uniformly distributed load w on the span. The beam is supported at the free end having levels same as that of fixed end (EI is constant)
- The prop reaction is wl/2
- The prop reaction is (3/8)wl
- The bending moment at the prop is wl2/2
- Shear force is zero at x = 3/8 from the prop end
- A.
1 and 3
- B.
2 and 3
- C.
1 and 4
- D.
2 and 4
- 16.A hallow cylindrical column, with both ends hinged of cross sectional area 81.7 cm2 and I = 1766 cm4 is 6 m long. If E = 0.8 x 106 kg/cm2, The Euler’s critical load in kg is
- A.
30,500
- B.
28,500
- C.
42,000
- D.
38,700
- 17.If the deflection at the free end of a uniformly loaded cantilever beam is 18 mm and the slope of the deflection curve at the free end is 0.02 radians, then length of the beam is
- A.
0.8 m
- B.
1.0 m
- C.
1.2 m
- D.
1.5 m
- 18.The ratio of flexural strength of a square section with its two sides horizontal to its diagonal horizontal
- A.
√2
- B.
√(2/5)
- C.
2√2
- D.
2
- 19.A two lane, one-way road with radius of 50 m is predominantly carrying lorries with wheelbase of 5 m. The speed of lorries is restricted to be between 60 kmph and 80 kmph. The mechanical widening and psychological widening required at 60 kmph are designated as Wme,60 and Wps,60 , respectively. The mechanical widening and psychological widening required at 80 kmph are designated as Wme,80 and Wps,80 , respectively. The correct values of Wme ,60 , Wps ,60, Wme ,80 ,Wps ,80 , respectively are
- A.
0.89m, 0.50m, 1.19m, 0.50m
- B.
0.50m, 0.89m, 0.50m, 1.19m
- C.
0.50m, 1.19m, 0.50m, 0.89m
- D.
1.19m,0.50m, 0.89m, 0.50m
- 20.A motorist travelling at 100 km/h on a highway needs to take the next exit, which has a speed limit of 50 km/h. The section of the roadway before the ramp entry has a downgrade of 3% and coefficient of friction (f) is 0.35. In order to enter the ramp at the maximum allowable speed limit, the braking distance (expressed in m) from the exit ramp is
- A.
92.14 m
- B.
82.24 m
- C.
60.89 m
- D.
41.85 m
- 21.Consider the following statements in the context of geometric design of roads. 1: A simple parabolic curve is an acceptable shape for summit curves 2: Comfort to passengers is an important consideration in the design of summit curves The correct option evaluating the above statements and their relationship is
- A.
1 is true , 2 is false
- B.
1 is true , 2 is true and 2 is correct reason for 1
- C.
1 is true , 2 is true and 2 is not correct reason for 1
- D.
1is false and 2 is true.
- 22.The total length of a valley formed by two gradients - 3% and + 2% curve between the two tangent points to provide a rate of change of centrifugal acceleration 0.6 m/sec3, for a design speed 100 kmph., is
- A.
16 m
- B.
42.3m
- C.
84.9 m
- D.
None
- 23.In Marshall method of mix design, the coarse aggregate, fine aggregate, fines and bitumen having respective values of specific gravity 2.60, 2.70, 2.65 and 1.01, are mixed in the relative proportions (% by weight) of 55.0, 35.8, 3.7 and 5.5 respectively. The theoretical specific gravity of the mix and the effective specific gravity of the aggregates in the mix respectively are:
- A.
2.42 and 2.63
- B.
2.42 and 2.68
- C.
2.42 and 2.93
- D.
2.64 and 2.78
- 24.Peak Hour Factor (PHF) is used to represent the proportion of peak sub-hourly traffic flow within the peak hour. If 15-minute sub-hours are considered, the theoretically possible range of PHF will be
- A.
0 to 1.0
- B.
0.25 to 0.75
- C.
0.25 to 1.0
- D.
0.5 to 1.0
- 25.The critical flow ratios for a three-phase signal are found to be 0.30, 0.25, and 0.25. The total time lost in the cycle is 10 s. Pedestrian crossings at this junction are not significant. The respective Green times (expressed in seconds and rounded off to the nearest integer) for the three phases are
- A.
34,28 and 28
- B.
40,25 and 25
- C.
40,30 and 30
- D.
50,25 and 25
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