Civil Engineering Practice Questions Set For SAIL GAIL

Civil Engineering Practice Questions Set For SAIL GAIL

Civil engineering practice Questions
online Objective test Civil Engg
1. In a wet soil mass, air occupies one-sixth of its volume and water occupies one-third of
its volume. The void ratio of the soil is
A. 0.25
B. 0.50
C. 0.75
D. 1.0
Ans : D
2. In accordance to ‘Gauss rule”, weights to be assigned are proportional to
A. l/(Sum of the residual errors of observations)
B. l/(Sum of the square of the residual
errors of observations)
C. Sum of the square roots of the residual
errors of observations
D. Sum of the cube roots of the residual errors of observations
Ans : B


3. Which one of the following traffic signal systems is useful when there is continuous operation of group of vehicles along the main road?
A. Simultaneous system
B. Alternate system
C. Simple progressive system
D. Flexible progressive system
Ans : C

4. Consider the following statements:
I. In clay soils, the maximum dry weight tends to decrease as plasticity increases.
2. In clay soils, the maximum dry unit weight tends to increase as plasticity
increases.
3. Heavy clays with high plasticity have the minimum dry unit weight and high OMC.
Which of the above statements are correct?
A. 1, 2 and 3
B. I and 2 only
C. 2 and 3 only
D. I and 3 only
Ans : D
5. The shape of the recession limb of a
hydrograph depends on
A. Basin .as well as storm characteristics
B. Storm characteristics only
C. Basin characteristics only
D. Base flow only
Ans : C

6. The declination of a celestial body is the arc of the declination circle intercepted between
that body and the
A. Prime vertical through that body
B. Azimuth of the body
C. Equinoxes of the Earth
D. Equator of the Earth
Ans : D

7. Consider the following statements:
1. Poorly graded or uniform sands compact to low dry unit weights.
2. Heavy clays with high plasticity have very low maximum dry unit weight.
3. In clay soils, the maximum dry weight tends to decrease as plasticity increases.
Which of the above statements is/are correct?
A. 1, 2 and 3
B. 1 and 2 only
C. 2 and 3 only
D. 3 only
Ans : C
8. A direct-runoff hydro graph due to an isolated storm was triangular in shape with a base of 80 h and peak of 200 m3/s If the catchment area is 1440 km2 the effective rainfall of the storm is
A 20cm
B. 10cm
C. 5cm
D. 2cm
Ans : D
9. In a water treatment, the optimum time of flocculation is usually given as 30 minutes. In case the time of flocculation is increased beyond this value, then the floes will
A. become heavy and settle down in flocculation itself
B. entrap air and will float in the sedimentation tank
C. break up and defeat the purpose of flocculation
D. stick to the paddles
Ans : B

10. Consider the following:
1. Line ranger
2. Reciprocal ranging
3. Random line method
4. Optical square
Which of these are the correct methods of ranging employed to solve the problem of vision obstructed but with chaining free?
A. 1, 2, 3 and 4
B. 2 and 3 only
C. 2 and 4 only
D. 3 and 4 only
Ans : B

11. A centrifugal pump will start delivering t liquid only when
A. Manometer head is greater than total head
B .Head developed tends to exceed the manometric head
C. head developed in a centrifugal pump is due to pressure head only
D. Head developed is negligible
Ans : B
12. Consider the following statements:
1. A streamline is an imaginary line within the flow for which the normal at any point relates to the acceleration at that point.
2. Convective acceleration is the change in velocity with respect to distance only.
3. Temporal acceleration expresses variation of velocity with respect to time only.
4. Both convective acceleration and temporal acceleration can coexist.
Which of these statements are correct related
to fluid kinematics?
A. 1,2,3and4
B. 1,2and3only
C. 2 and 3 only
D. 2, 3 and 4 only


Ans : D

13.Error due to inclination of line of collimation in leveling across a river can be eliminated by
A. Reversion
B. Reciprocal ranging
C. Reciprocal leveling
D. Keeping level in middle
Ans : C
14. Full amount of super-elevation on a horizontal curve is provided at the.
A. beginning of the transition curve
B. centr6 of the circular curve -
C. end of the transition curve
D. centre of the transitive curve

Ans : C

15. Consider the following in the context of
variations in magnetic declination:
1. Secular
2. Diurnal
3. Annual
4. Regular
Which of these are relevant?
A.1,2and3
B. 1,2and4
C. 2 and 3 only
D. 3 and 4 only

Ans : A