Deck 2: Structural Analysis and Design

Question 1

Independent displacement components at each joint of a rigid-jointed plane frame are

A)three linear movements
B)two linear movements and one rotation
C)one linear movement and two rotations
D)three rotations

Answer 1

two linear movements and one rotation

Question 2

If there are m unknown member forces, r unknown reaction components and j number of joints, then the degree of static indeterminacy of a pin-jointed plane frame is given by

A)m + r + 2j
B)m - r + 2j
C)m + r - 2j
D)m + r - 3j

Answer 2

m + r - 2j

Question 3

The carryover factor in a prismatic member whose far end is fixed is

A)0
B)1/2
C)3/4
D)1

Answer 3

1/2

Question 4

Effects of shear force and axial force on plastic moment capacity of a structure are respectively to

A)increase and decrease
B)increase and increase
C)decrease and increase
D)decrease and decrease

Question 5

The maximum bending moment due to a train of wheel loads on a simply supported girder

A)always occurs at centre of span
B)always occurs under a wheel load
C)never occurs under a wheel load
D)none of the above

Question 6

When a series of wheel loads crosses a simply supported girder, the maximum bending moment under any given wheel load occurs when

A)the centre of gravity of the load system is midway between the centre of span and wheel load under consideration
B)the centre of span is midway between the centre of gravity of the load system and the wheel load under consideration
C)the wheel load under consideration is midway between the centre of span and the centre of gravity of the load system
D)none of the above

Question 7

Castigliano's first theorem is applicable

A)for statically determinate structures only
B)when the system behaves elastically
C)only when principle of superposition is valid
D)none of the above

Question 8

Number of unknown internal forces in each member of a rigid jointed plane frame is

A)1
B)2
C)3
D)6

Question 9

The number of independent equations to be satisfied for static equilibrium in a space structure is

A)2
B)3
C)4
D)6

Question 10

Degree of static indeterminacy of a rigid-jointed plane frame having 15 members, 3 reaction components and 14 joints is

A)2
B)3
C)6
D)8

Question 11

The degree of static indeterminacy up to which column analogy method can be used is

A)2
B)3
C)4
D)unrestricted

Question 12

A single rolling load of 8 kN rolls along a girder of 15 m span. The absolute maximum bending moment will be

A)8 kn.m
B)15 kn.m
C)30 kn.m
D)60 kn.m

Question 13

The deformation of a spring produced by a unit load is called

A)stiffness
B)flexibility
C)influence coefficient
D)unit strain