UPPSC AE (CE) Quiz 19 for AE & JE Exams Exams

Question 1

The stiffness matrix of a beam element is

Which one of the following is its flexibility matrix?

Question 2

In a flexibility matrix, to get the jth column, you will:

Question 3

The stiffness coefficient K₁ for the beam as shown below is

Question 4

Which of the following statements are correct?
1) It is common practice to discount the influence of axial thrust on the bending stiffness of members of frames.
2) In a portal frame of single bay, the columns have different thermal coefficients of expansion. If the whole frame is subjected to a same temperatue, there will be a component of deformation in the vertical directions.
3) The flexibility method of analysis cannot be used to solve any kind of indeterminate structural problem problem.

Question 5

The beams in the storey frame shown in the figure below have a cross section such that the flexural rigidity may be considered infinite.Which among the following is the stiffnass matrix for the structure in respect of the global coordinates 1 and 2?

Question 6

Which of the following statement is not correct?

a) The Muller-Breslau principle can be used to indicate the parts of the structure to be loaded to obtain the maximum effect.

b) In the case of truss, strain energy in the system is given by strain energy due to axial forces in the members only.

c) The elements of flexibility matrix are dimensionally homogeneous as they represent either translation or rotation.

d) Matrix will always be a symmetric matrix about its main diagonal.

Question 7

Which of the following statements are correct?

1) The flexibility matrix will be having 16 terms.
2) The number of zeroes in the flexibility matrix is 4
3) The number of negative terms in the flexibility matrix is 4
4) The number of unequal terms in the flexibility matrix is 7

Question 8

The stiffness matrix of a beam element is

. Which of the following is its flexibility matrix?

Question 9

A three span continuous beam is fixed at its ends and supported by two rigid supports in between. The order of the reduced stiffness matrix for this beam is

Question 10

Which of the following statements are true?
1) For a stiffness matrix k_ij = k_ji always.
2) The principal diagonal of a stiffness matrix is always non zero positive.
3) Stiffness matrix is always a square matrix.
4) Stiffness matrix method is not useful in complex structures.