ISRO Draughtsman Civil Mock Test - 2 - Civil Engineering (CE) MCQ

Hence the correct answer is option B.

The clear horizontal distance between two supports of an arch is called a span.

The exterior curved surface of the arch is called the extrados.

Hence the correct answer is option B.

• Shear strength of cohesionless soils is only developed with the presence of effective stress.

• Shear strength increases with increasing effective stress.

• The increase of shear strength of cohesionless soil depends upon the internal friction angles of the soil.

• The type of soil most susceptible to liquefaction is one in which the resistance to deformation is mobilized by friction between particles. If other factors such as grain shape, uniformity coefficient, and relative density are equal, the frictional resistance of cohesion less soil decreases as the grain size of soils becomes smaller.

Hence the correct answer is option C.

Positive if y > yc

Birds fly with the help of wings.
Similarly fish swims with the help of fins.
Therefore, fish is related to fins.

The pattern is as follows,
1984 is the reverse of 4891
Similarly, 2874 is the reverse of 4782.
Hence the required pair is 2874 : 4782.

Section modulus, (Z=1/Y_max)

where (I=bd³/12)&(y_max=d/2)

Now

(Z=(bd³/12)/(d/2)=bd²/6)

Hence the option B is correct.

Hence the option D is correct.

Hence the option C is correct.

Hence the correct answer is option C

Hence the correct answer is option D.

V₁ = 9.95ml M₁ = 17.5ml

V₂ = 5.60ml M_s = 11.5ml

W_s = 0.4043 = 40.43%

The specific gravity of solids

G = 2.91

Hence the correct answer is option A.

The radius of Mohr Circle ⇒ R=τ_max = √[(σ_x - σ_y/2)² + τ_xy 2)]

In static fluid,

τ_xy = 0 and σ_x = σ_y = - σ (normal compressive stress)

⇒ R=τ_max = √[(σ - σ/2)² + τ_xy 2 )] = 0

Therefore, Mohr Circle for Static Fluid is a Point Circle

Hence, the correct option is (D)

(a)NIL – When there is no perceptible deposit of efflorescence.

(b)SLIGHT- Not more than 10% area of the brick covered with a thin deposit of salt.

(c)MODERATE- Covering up to 50% area of the brick.

(d)HEAVY- Covering 50% or more but unaccompanied by powdering or flaking of the brick surface.

(e)SERIOUS- When there is a heavy deposit of salts accompanied by powdering and/or flacking of the exposed surfaces.

Hence, the correct option is (B)

Hence, the correct option is (B)

Hence, the correct option is (B)

Hence, the correct option is (C)

In the triaxial test stress in the vertical direction is different from stress in the other two directions.

• Algae are important sources of dissolved oxygen in a water impoundment and constitute the basic building blocks of the aquatic food chain

• They cause water quality problems only when they proliferate so much that they upset the ecological balance

• Copper sulfate is frequently used for algal control, and sometimes it is applied on a routine basis during summer months, whether or not it is actually needed

Note: Alum is used as a coagulant in the coagulation process.

• More will be the cement-aggregate ratio, more will be the durability of concrete

• The durability of concrete is inversely proportional to the water-cement ratio