This set of Structural Analysis Multiple Choice Questions & Answers (MCQs) focuses on “Cable Subjected to Concentrated Loads and cables”.
1. Find the tension in cable CD in the discretely loaded cable shown below.
a) 4.79
b) 5.79
c) 6.79
d) 7.79
View Answer
Explanation: Conserve moment about point A and assume required tension a variable. Bifurcate it into x and y directions to make calculation easier.
2. What will be the tension in cable BC in the discretely loaded cable shown below?
a) 4.82
b) 5.82
c) 6.82
d) 7.82
View Answer
Explanation: Balance force at point C in x and y direction which will give two equations. Assume the angle between BC and x axis as a variable.
3. What will be the tension in cable AB in the discretely loaded cable shown below?
a) 4.9
b) 5.9
c) 6.9
d) 7.9
View Answer
Explanation: Balance force at point B in x and y direction which will give two equations. Assume the angle between AB and x axis as a variable.
4. What will be the value of h in the discretely loaded cable shown below?
a) .74
b) 1.74
c) 2.74
d) 3.74
View Answer
Explanation: Since all the angles are known, we can find h using basic trigonometry.
5. Compute tension in cable AB in the discretely loaded cable shown below.
a) 110.87
b) 210.87
c) 310.87
d) 410.87
View Answer
Explanation: Balance moment about point E and bifurcate the required tension for easier calculation.
6. What will be the tension in cable DE in the discretely loaded cable shown below?
a) 106.12
b) 206.12
c) 306.12
d) 406.12
View Answer
Explanation: Balance force along x and y direction since, tension in cable DE is already known.
7. In force analysis, weight of cable is generally ________
a) Added
b) Neglected
c) Added in some, neglected in others arbitrarily
d) Depends upon magnitude of other load
View Answer
Explanation: In roofs and bridges it is neglected, but in cases like radio antennas it is considered.
8. It is generally assumed that the cable is ________
a) Perfectly flexible
b) Perfectly inflexible
c) Extensible
d) Perfectly flexible and extensible
View Answer
Explanation: It is assumed to be flexible so that the resistance offered by cable can be neglected which leads to the force always acts tangential to the cable.
9. It is generally assumed that the cable is _________
a) Perfectly flexible
b) Perfectly inflexible
c) Inextensible
d) Perfectly flexible and extensible
View Answer
Explanation: It is assumed to be inextensible so that we can ignore very minor length changes which occur after application of load.
10. Due to above assumptions, cables behave like:-
a) Rigid body
b) Non-rigid body
c) Fluid
d) Pulley
View Answer
Explanation: Due to these assumptions, geometry of cable remains fixed after application of load.
11. The shape cables take in resisting loads is called a vermicular curve.
State whether the above statement is true or false.
a) True
b) False
View Answer
Explanation: They are called funicular curve often refereed as funiculars.
12. Cables supporting roadway of a suspension bridge is considered to carry point load.
State whether the above statement is true or false.
a) True
b) False
View Answer
Explanation: They are considered to be carrying uniformly distributed load.
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