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

Gross diameter, d=20+1.5=21.5mm

Strength of rivet in single shear = (π/4) x (21.5)² x 100 x 10^-3 = 36.05kN

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 C.

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.

During sudden closure of valve, a wave of high pressure intensity will be produced in the water, due to this high pressure circumferential and longitudinal stresses will be produced.

Positive if y > yc

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.

Modulus of rigidity is the ratio of shear stress to shear strain

Hence the option D is correct.

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 D 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.

σ_b − Bending stress

M − Calculated bending moment

y − Vertical distance away from the neutral axis

I − Moment of inertia around the neutral axis

Hence correct answer is option B.

Hence the correct answer is option A.

• Kor watering refers to the first crucial irrigation given to a crop after the sowing or transplantation stage, typically during the early establishment phase.
• For rice, which is a water-intensive crop and usually grown under flooded conditions, the optimum depth of kor watering is about 19 cm.
• This depth ensures proper root establishment and helps suppress weed growth.

Therefore, Correct Answer is Option B

(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)

A technique for the calculation of slope stability based upon the assumption of a plane

surface of failure through the toe of the slope has been proposed by Culmann. This slope stability analysis method is not widely used since it has been found that plane surfaces of sliding are observed only with very steep slopes, and for relatively flat slopes, the surfaces of sliding are almost always curved.

Hence, the correct option is (C)

Hence, the correct option is (C)

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