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# Gate Civil Engineering Previous Year Solved Paper 2- 2014 MCQs

#### Group I contains representative stress-strain curves as shown in the figure, while Group II gives the list of materials. Match the stress-strain curves with the corresponding materials. Correct! Wrong!

#### The first moment of area about the axis of bending for a beam cross-section is

Correct! Wrong!

Section modulus, z = I/r = A.r.r/r = A.r i.e. Moment of Area

#### Polar moment of inertia (Ip), in cm4, of a rectangular section having width, b = 2 cm and depth, d = 6 cm is ________________

Correct! Wrong!

Polar moment of inertia = Moment of Inertia about XX axis + YY axis. = bd3/12 + db3/12 = 2*6*6*6/12 + 6*2*2*2/11 = 40

#### The target mean strength fcm for concrete mix design obtained from the characteristic strength fck and standard deviation σ, as defined in IS:456-2000, is

Correct! Wrong!

Fcm = fck + 1.35 σ ( According to IS 456:2000)

#### The flexural tensile strength of M25 grade of concrete, in N/mm2, as per IS:456-2000 is __________

Correct! Wrong!

Flexural tensile strength of M25 grade of concrete, Fcr = 0.7*(fck)^0.5 = 0.7 * (25)^0.5 = 3.5 N/mm2

#### The modulus of elasticity, E = 5000 fck^0.5 where fck is the characteristic compressive strength of concrete, specified in IS:456-2000 is based on

Correct! Wrong!

The modulus of elasticity, E = 5000 fck^0.5 is based on initial tangent modulus

#### The static indeterminacy of the two-span continuous beam with an internal hinge, shown below, is ______________ Correct! Wrong!

Dg = 3m+r-3j-r, m = no. of members = 4, r = no. of external reactions = 4, j = no. of joints = 5, r = no. of reactions released = 2-1 = 1 So, Dg = 3*4 +4 -3*5 -1 = 0

#### As per Indian Standard Soil Classification System (IS: 1498 - 1970), an expression for A-line is

Correct! Wrong!

As per Indian Standard Soil Classification System (IS: 1498 - 1970), an expression for A-line is Ip = 0.73 (wL - 20)

#### The clay mineral primarily governing the swelling behavior of Black Cotton soil is

Correct! Wrong!

The clay mineral primarily governing the swelling behavior of Black Cotton soil is Montmorillonite

#### The contact pressure for a rigid footing resting on clay at the centre and the edges are respectively

Correct! Wrong!

The contact pressure for a rigid footing resting on clay at the centre and the edges are respectively minimum and maximum

#### A certain soil has the following properties: Gs = 2.71, n = 40% and w = 20%. The degree of saturation of the soil (rounded off to the nearest percent) is _________

Correct! Wrong!

Gs = 2.71, n = 40% = 0.40, W = 20%, S = ? e = n/(1-n) = 0.40/0.60 = 0.67, S = WG/e = 0.20*2.71/0.67 = 0.808 = 81%

Gate Civil Engineering Previous Year Solved Paper 2- 2014 MCQs
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