Day 11 Civil war PWD

Front

The flexibility coefficient of the free end of the cantilever having clockwise unit moment as ordinate at free end

Back

L/EI

Answer explanation

the flexibility coefficient of the free end of a cantilever with unit moment at the free end is L/EI.

Front

Flexibility and stiffness matrices are

Back

Inverse of each other

Answer explanation

Flexibility matrix relates forces to displacements, stiffness matrix relates displacements to forces. They are inverses.

Front

Select the correct statement: Flexibility matrix is a square symmetrical matrix, Stiffness matrix is a square symmetrical matrix.

Back

Both statements are correct.

Answer explanation

Both flexibility and stiffness matrices are square and symmetrical in structural analysis.

Front

The distribution factor of a member at a joint is

Back

The ratio of the moment shared by the member to the total moment applied at the joint

Answer explanation

Distribution factor is the share of moment carried by a member out of total joint moment.

Front

Moment required to rotate an end by unit angle when rotation is permitted at the end, is called .......... of the beam.

Back

Stiffness

Answer explanation

Stiffness is the moment required to produce unit rotation at a beam end.

Front

In Clapeyron’s theorem if both ends are simply supported, what is the correct statement?

Back

Ends moments are taken zero

Answer explanation

For simply supported ends, end moments vanish in Clapeyron’s theorem of three moments.

Front

Carry over moment of member if far end is fixed

Back

M/2

Front

Using three moment equation, which type of beam is analyzed?

Back

Continuous and fixed beams

Answer explanation

Three moment theorem is applied for analysis of continuous and fixed beams.

Front

Rotation factor is defined as

Back

-0.5 DF

Answer explanation

Rotation factor is defined as negative half of distribution factor (-0.5DF).

Front

In slope deflection method, the displacement considered are due to

Back

BM only

Answer explanation

In slope deflection method, only bending moment (BM) displacements are considered.