Which of the following theorems states if a beam has ‘n’ supports. The end being fixed, than the same number of equations required to determine the support moments may be obtained from the consecutive pairs of spans?

Correct option is A

→ Clapeyron's the arm also known as the three – moment equation.
→ It states that beam has (n) Supports, if one end is fixed, the same number of equations required to determine the support moments can be obtained from the consecutive pairs of spans.