Match the following lists :
| List-I (components) | List-II (working) |
|---|---|
| P.Trusses | 1.Carry compressive force |
| Q.Cables | 2.Located at the crown and supports elevations |
| R.Arches | 3.Support their loads in tension |
| S.Three-hinged arches | 4.Prevent collapse |
Select the correct answer using the code given below :
- A4 3 1 2Correct
- B3 2 4 1
- C4 1 2 3
- D2 3 4 1
Solution
Concept
Working of trusses, cables and arches
Step-by-step solution
1. Cables support their loads in tension → 3. 2. Arches carry mainly compressive force → 1. 3. Three-hinged arches have hinges at the crown and supports → 2. 4. Trusses are braced frames that prevent collapse → 4.
Explanation
A cable works in pure tension, an arch in compression, and a three-hinged arch is made determinate by hinges at the crown and the two supports.
Why the other options are wrong
The other codes give cables a compressive role.
Shortcut
Cable = tension; arch = compression.
Correct answer: A) 4 3 1 2