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Civil Engineering (CE) Exam  >  Civil Engineering (CE) Tests  >  Test: External Work & Strain Energy - Civil Engineering (CE) MCQ

Test: External Work & Strain Energy - Civil Engineering (CE) MCQ


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10 Questions MCQ Test - Test: External Work & Strain Energy

Test: External Work & Strain Energy for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Test: External Work & Strain Energy questions and answers have been prepared according to the Civil Engineering (CE) exam syllabus.The Test: External Work & Strain Energy MCQs are made for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: External Work & Strain Energy below.
Solutions of Test: External Work & Strain Energy questions in English are available as part of our course for Civil Engineering (CE) & Test: External Work & Strain Energy solutions in Hindi for Civil Engineering (CE) course. Download more important topics, notes, lectures and mock test series for Civil Engineering (CE) Exam by signing up for free. Attempt Test: External Work & Strain Energy | 10 questions in 20 minutes | Mock test for Civil Engineering (CE) preparation | Free important questions MCQ to study for Civil Engineering (CE) Exam | Download free PDF with solutions
Test: External Work & Strain Energy - Question 1
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 Ue= work done by all external forces
Ui = internal work or strain energy
Δ = final elongation of bar
Θ = final angular deflection

Ui is not developed when:- 

Detailed Solution for Test: External Work & Strain Energy - Question 1

Answer: d
Explanation: Ui is developed when structure deforms, which is happening in other three options.

Test: External Work & Strain Energy - Question 2
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What will be the value of Ue if material is linear elastic? Axial force is increased from 0 to P gradually. 

Detailed Solution for Test: External Work & Strain Energy - Question 2

Answer: c
Explanation: Due to linear elasticity, we can substitute force in terms of P and Δ and then integrate wrt x to get the final answer.

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Test: External Work & Strain Energy - Question 3
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What will be the work done force P if another load external load F’ causes deflection Δ’ in the above question? 

Detailed Solution for Test: External Work & Strain Energy - Question 3

Answer: d
Explanation: Here, P will remain constant. So, it will be a simple integration from 0 to Δ’.

Test: External Work & Strain Energy - Question 4
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 What will be the work done by F’? 
Detailed Solution for Test: External Work & Strain Energy - Question 4

Answer: c
Explanation: Here, P will remain constant. So, it will be a simple integration from 0 to Δ’.

Test: External Work & Strain Energy - Question 5
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What will be the value of Ue if material is linear elastic? Moment is increased from 0 to m gradually. 
Detailed Solution for Test: External Work & Strain Energy - Question 5

Answer: c
Explanation: Due to linear elasticity, we can substitute moment in terms of M and θ and then integrate wrt x to get the final answer. Mdθ is done for moment to calculate work done.

Test: External Work & Strain Energy - Question 6
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What will be the work done force M if another load external load M’ causes deflection θ’ in the above question?
Detailed Solution for Test: External Work & Strain Energy - Question 6

Answer: d
Explanation: Here, P will remain constant. So, it will be a simple integration from 0 to Δ’.

Test: External Work & Strain Energy - Question 7
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What will be the work done by M’ in above question?
Detailed Solution for Test: External Work & Strain Energy - Question 7

Answer: c
Explanation: Due to linear elasticity, we can substitute moment in terms of M and θ and then integrate wrt x to get the final answer. Mdθ is done for moment to calculate work done.

Test: External Work & Strain Energy - Question 8
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If an axial force N is applied gradually to a bar which is linear elastic and has a constant cross sectional area A and length L, what will be Δ?
Detailed Solution for Test: External Work & Strain Energy - Question 8

Test: External Work & Strain Energy - Question 9
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In the above question, what will be the value of Ui ? 
Detailed Solution for Test: External Work & Strain Energy - Question 9

Answer: c
Explanation: Once deformation is known, we can calculate the work done using earlier equations and then Ue = Ui.

Test: External Work & Strain Energy - Question 10
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What will be the value of dUi in terms of E and I? 
Detailed Solution for Test: External Work & Strain Energy - Question 10

Answer: c
Explanation: Relation between dθ and M/EI is known. So, we can use that to get results.

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