# Structural Analysis Questions and Answers – Additional Remarks on the Force Method of Analysis

This set of Structural Analysis Multiple Choice Questions & Answers (MCQs) focuses on “Additional Remarks on the Force Method of Analysis”.

State whether the above statement is true or false
a) true
b) false

2. How many compatibility equations should be written if we have n no. of redundant reactions?
a) n – 1
b) n
c) n + 1
d) n + 2

Explanation: No. of redundant reactions and compatibility equations are equal.

3. Flexibility matrix is always:-
a) symmetric
b) non-symmetric
c) anti-symmetric

Explanation: Flexibility matrixes are always symmetric as a consequence of Betti’s law.

4. Numerical accuracy of solution increases if flexibility coefficients with larger values are located:-
a) near main diagonal
b) near edges
c) in between
d) near side middles

Explanation: Numerical accuracy increases if larger coefficients are located near the main diagonal of matrix.

5. Which of the following primary structure is best for computational purposes?
a) symmetric
b) non-symmetric
c) anti-symmetric

Explanation: It is easier to compute solutions for flexibility coefficient matrix in that case.
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6. For computational purposes, deflected primary structure ans actual structure should be ___________
a) as different as possible
b) as similar as possible
c) it doesn’t matter
d) in between

Explanation: This leads to small corrections induced by redundants.

7. Indeterminate analysis of a symmetrical structure is difficult from that of a non symmetric one.
State whether the above statement is true or false.
a) true
b) false

Explanation: Symmetricity makes the indeterminate analysis easier.

8. In general, any structure can be classified as a symmetric one :-
a) when its structure is symmetric
c) when its supports are symmetric

Explanation: It is deemed as symmetric when when it develops symmetric internal loading and deflections about central axis.

9. Normally, which of the following things may/may not be symmetric to develop symmetricity?
a) material
b) geometry
d) dki

10. Indeterminate analysis of a anti-symmetrically loaded structure is difficult from that of non symmetric one.
State whether the above statement is true or false.
a) true
b) false

Explanation: Solving one side would give modulus of deflections of other side as well.

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