The point in the cross section of beam through which if load acts there will not be any twisting of the beam but there will be only bending is known as

 

(A) shear centre

 

(B) centre of gravity

 

(C) centroid

 

(D) all the above

The shape factor of a diamond shaped section for bending about its diametral arise is

(A) 1.2

(B) 1.5

(C) 2.0

(D) 3.0

In a linearly elastic structure, partial derivative of the strain energy with respect to a load is equal to the deflection of the point where the load is acting, the deflection being measured in the direction of the load. This is known as

(A) Bernauli's theorem

(B) Castigliano's theorem

(C) Unit load method

(D) Work energy principle

The systematic development of slope deflection method in the matrix form is known as to

(A) equilibrium method

(B) displacement matrix method

(C) stiffness matrix method

(D) all the above

Which one of the following methods is more accurate for the analysis of rigid frames?

(A) portal method

(B) factor method

(C) slope deflection method

(D) substitute frame method

If a rigid body is in equilibrium under a system of forces the virtual work done by this system of forces during virtual displacement is zero. This principle is known as

(A) Bernauli's principle

(B) Mecaulay's principle

(C) Work energy principle

(D) Castigliano's principle

The absolute bending moment in a supply supported of span 10 m due to a moving load of 40 kN/m spanning over 5 m is

(A) 375 kN at midpoint

(B) 375 kN m at 2.5 m from end A

(C) 375 kN at 3.75 m from end A

(D) 500 kN m at midspan

Which one of the following is the interlocking system used in railway signalling?

(A) Mechanical system

(B) Key system

(C) Electrical system

(D) Electronic system

The rail section, nowadays, used in India is

(A) Flat footed

(B) Bull headed

(C) Double headed

(D) I-section

Indian Railways has been divided into

(A) 10 zones

(B) 12 zones

(C) 18 zones

(D) 19 zones

The most widely used gauge in the world is

(A) Broad gauge

(B) Metre gauge

(C) Narrow gauge

(D) Standard gauge