APSC AE CE Paper 1 Mock Test - 3 - Civil Engineering (CE) MCQ

Pre-cast concrete piles are cast and cured in a casting yard and then transported to the site for driving.
 

Pre-cast pile generally used is in form of square cross section with chamfered corners.

Using this square cross section with chamfered corners has three advantages: 
As the corners are chamfered,

a)  The surface area of the piles gets increased. That will provide more frictional resistance and will add to pile capacity.

b) It is easier and cheaper to drive this kind of piles into soils.

c) The corners stress concentration at the edges is avoided.

The pattern here is:
42 + 1 = 17, 4 + 2 = 6;
62 + 1 = 37, 6 + 2 = 8;
82+ 1 = 65, 8 + 2 = 10
Thus,
102 + 1 = 101
Hence the required number is 101.

The behavior and load carrying behavior of reinforced concrete structures is influence by the interaction between the concrete and reinforcement. The stress transfer between reinforcement and concrete in the longitudinal direction of the bars is called bond. An essential feature of reinforced concrete is the bond between steel and concrete.

Weight density is given by weight/volume = mg/V
dimensions of m = M
dimensions of g = LT^-2
dimensions of V = L³
Hence dimensions of specific weight are ML^-2T^-2

Hence the option C is correct.

Hence the option B is correct.

Sludge digestion, also known as anaerobic digestion, involves anaerobic decomposition. This process occurs in an oxygen-free environment where microorganisms break down organic matter in the absence of oxygen. So, option 2, anaerobic decomposition, is the correct choice. This process is commonly used in wastewater treatment plants to break down organic solids, producing biogas as a byproduct.

Liquidity Index =

Shrinkage Ratio =

=

Consistency Index =

Hence, the correct option is (d).

Hence, the correct option is (b).

Hence the correct answer is option d.

Hence the correct answer is option A.

Hence the correct answer is option B.

50% of tricalcium silicate- for rapid strength and quick setting of cement.

30% of dicalcium silicate- hardens slowly and is responsible for long term strength.

10% of tricalcium aluminate-quick action with water.

10% of tetra calcium Aluminoferrate.

5% of Gypsum.

Hence, the correct option is (A).

Hence, the correct option is (B)

Hence, the correct option is (B)

Two cross-sections will be hydraulically equal when the hydraulic mean depth of the two is the same.

The hydraulic mean depth is given by:

This implies if the two cross-sections have the same ratio of wetted area to wetted perimeter, then it is said to be hydraulically equal.