# Civil Engineering - UPSC Civil Service Exam Questions

46.

Which one of the following statements is correct ?
Maximum service volume of a road is defined as the total number of vehicles that

 A. can pass a given point in a specified period of time B. can be accomodated on a unit length of road C. can pass a given point in unit time D. None of the above three

Explanation:

No answer description available for this question. Let us discuss.

47.

The pressure gradient in the direction of flow is equal to the :

 A. Shear gradient parallel to the direction of flow B. Shear gradient normal to the direction of flow C. Velocity gradient parallel to the direction of flow D. Velocity gradient normal to the direction of flow

Explanation:

No answer description available for this question. Let us discuss.

48.

When the strain in a material increases with time under sustained constant stress, the phenomenon is known as

 A. Strain hardening B. Hysteresis C. Creep D. Visco-elastici

Explanation:

No answer description available for this question. Let us discuss.

49.

An upward hydraulic gradient i of a certain magnitude will initiate the phenomenon of boiling in granular soils. The magnitude of this gradient is

 A. 0 ≤ i ≤ 0.5 B. 0.5 < t < 1.0 C. i ≅ 1.0 D. l < i ≤ 2

Explanation:

No answer description available for this question. Let us discuss.

50.

Well-graded dense saturated sands have high shear strength because :

 A. Such sands have a better grade (superior type) of sand grains resulting in higher strength B. Such sands have lower water content, which increases shear strength C. Such sands have better interlocking of grains, higher inter-particle contacts and higher inter-particle frictional resistance resulting in higher strength. D. Presence of water in such sands induces capillary pressure generating higher inter-granular stresses, which generate apparent cohesion and hence higher shear strength.