Question:

If there are m unknown member forces, r unknown reaction components and j number ofjoints, 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» c. m + r – 2j

Question:

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

Answer» d. decrease and decrease

Question:

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

Answer» b. always occurs under a wheel load

Question:

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

A.

2

B.

3

C.

6

D.

8

Answer» c. 6

Question:

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

A.

0

B.

1/2

C.

3/4

D.

1

Answer» b. 1/2

Question:

Degree of kinematic indeterminacy of a pin-jointed plane frame is given by

A.

2j – r

B.

j – 2r

C.

3j – r

D.

2j + r

Answer» a. 2j – r

Question:

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

A.

1

B.

2

C.

3

D.

6

Answer» c. 3

Question:

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

A.

1

B.

2

C.

3

D.

6

Answer» c. 3

Question:

When a series of wheel loads crosses a simply supported girder, the maximum bending momentunder 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

Answer» b. the centre of span is midway between the centre of gravity of the load system and the wheel load under consideration

Question:

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

A.

8 kn.m

B.

15 kn.m

C.

30 kn.m

D.

60 kn.m

Answer» c. 30 kn.m