Structural Analysis Multiple Choice Questions on “Three-Hinged Arch”.
1. Top most part of an arch is called ________
a) Sofit
b) Crown
c) Center
d) Abutment
Answer: b
Clarification: Top most part is called crown. Other options are name of other part.
2. Which of the following is true in case of stone brick?
a) They are weak in compression and tension
b) They are good in compression and tension
c) They are weak in compression and good in tension
d) They are good in compression but weak in tension
Answer: d
Clarification: Stone brick is very good in compression but weak in tension.
3. Shape of three hinged arch is always :-
a) Hyperbolic
b) Circular
c) Parabolic
d) Can be any arbitrary curve
Answer: c
Clarification: Three hinged arch is always made in parabolic shape.
4. Internal bending moment generated in a three hinged arch is always:-
a) 0
b) Infinite
c) Varies
d) Non zero value but remains constant
Answer: a
Clarification: Due to its geometry, bending moment always comes out to be zero in 3 hinged arches.
5. Internal shear force generated in a three hinged arch is always:-
a) 0
b) Infinite
c) Varies
d) Non zero value but remains constant
Answer: a
Clarification: Due to its geometry, shear force always comes out to be zero in 3 hinged arches.
6. What is the degree of indeterminacy of a fixed arch?
a) 1
b) 2
c) 3
d) 4
Answer: c
Clarification: It is indeterminate to 3 degrees.
7. What is the degree of indeterminacy of a two hinged arch?
a) 1
b) 2
c) 3
d) 4
Answer: b
Clarification: It is indeterminate to 2 degrees. It consists of two pin supports at both of its ends.
8. In real life, bending stresses are zero in a three hinge arch.
State whether the above statement is true or false.
a) True
b) False
Answer: b
Clarification: In real life, loads are moving which results in generation of bending stresses.