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SSC CGL Exam  >  SSC CGL Tests  >  General Awareness for SSC CGL  >  Test: Elasticity - SSC CGL MCQ

Test: Elasticity - SSC CGL MCQ


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15 Questions MCQ Test General Awareness for SSC CGL - Test: Elasticity

Test: Elasticity for SSC CGL 2024 is part of General Awareness for SSC CGL preparation. The Test: Elasticity questions and answers have been prepared according to the SSC CGL exam syllabus.The Test: Elasticity MCQs are made for SSC CGL 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Elasticity below.
Solutions of Test: Elasticity questions in English are available as part of our General Awareness for SSC CGL for SSC CGL & Test: Elasticity solutions in Hindi for General Awareness for SSC CGL course. Download more important topics, notes, lectures and mock test series for SSC CGL Exam by signing up for free. Attempt Test: Elasticity | 15 questions in 30 minutes | Mock test for SSC CGL preparation | Free important questions MCQ to study General Awareness for SSC CGL for SSC CGL Exam | Download free PDF with solutions
Test: Elasticity - Question 1
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What is the SI unit of elasticity?

Detailed Solution for Test: Elasticity - Question 1
The SI unit of elasticity is the pascal (Pa), which measures pressure and stress.
Test: Elasticity - Question 2
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If a material experiences a longitudinal stress of 1000 N/m² and has a cross-sectional area of 5 m², what is the applied force?

Detailed Solution for Test: Elasticity - Question 2
Using the formula σ = F/A, rearrange to find F = σ × A. Therefore, F = 1000 N/m² × 5 m² = 5000 N.
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Test: Elasticity - Question 3
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What type of stress is responsible for the change in volume of a material due to pressure changes?

Detailed Solution for Test: Elasticity - Question 3
Volume stress, or bulk stress, arises from changes in the volume of a material due to pressure changes.
Test: Elasticity - Question 4
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How is shear stress (τ) calculated?
Detailed Solution for Test: Elasticity - Question 4
Shear stress is calculated by τ = F/A, where F is the applied force and A is the area over which the force acts.
Test: Elasticity - Question 5
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What is the formula for longitudinal strain (∈)?
Detailed Solution for Test: Elasticity - Question 5
Longitudinal strain is calculated using the formula ∈ = ΔL/L0, where ΔL is the change in length and L0 is the original length.
Test: Elasticity - Question 6
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A material has a Young’s modulus (E) of 200 GPa and experiences a stress (σ) of 50 MPa. What is the strain (∈)?
Detailed Solution for Test: Elasticity - Question 6
Using the formula E = σ/∈, rearrange to find ∈ = σ/E. Convert units to match (200 GPa = 200,000 MPa), so ∈ = 50 MPa / 200,000 MPa = 0.00025.
Test: Elasticity - Question 7
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Which type of strain measures the distortion of a material’s cross-sectional elements due to shear stress?
Detailed Solution for Test: Elasticity - Question 7
Tangential strain, or shear strain, measures the distortion of a material’s cross-sectional elements due to shear stress.
Test: Elasticity - Question 8
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How does elastic hysteresis affect a material during cyclic loading and unloading?
Detailed Solution for Test: Elasticity - Question 8
Elastic hysteresis results in energy loss during cyclic loading and unloading, even if the material remains within its elastic deformation range.
Test: Elasticity - Question 9
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If a fluid is subjected to a pressure of 1500 Pa, what is the volume stress (σbulk) in the fluid?
Detailed Solution for Test: Elasticity - Question 9
For fluids, the volume stress (σbulk) is equal to -P, so σbulk = -1500 Pa.
Test: Elasticity - Question 10
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What does Poisson’s ratio (ν) describe?
Detailed Solution for Test: Elasticity - Question 10
Poisson’s ratio describes the ratio of lateral strain to axial strain when a material is subjected to axial stress.
Test: Elasticity - Question 11
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A material has a shear modulus (G) of 80 GPa and a shear stress (τ) of 16 MPa. What is the shear strain (γ)?
Detailed Solution for Test: Elasticity - Question 11
Using the formula G = τ/γ, rearrange to find γ = τ/G. Convert units to match (80 GPa = 80,000 MPa), so γ = 16 MPa / 80,000 MPa = 0.0002.
Test: Elasticity - Question 12
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In a material with a bulk modulus (K) of 100 GPa, if the volume strain (∈V) is 0.001, what is the pressure applied to the material?
Detailed Solution for Test: Elasticity - Question 12
Using the formula K = -P/∈V, rearrange to find P = -K × ∈V. Convert units to match (100 GPa = 100,000 MPa), so P = 100,000 MPa × 0.001 = 100 MPa.
Test: Elasticity - Question 13
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A material undergoes a change in length of 0.02 m when subjected to an axial force. If the original length of the material is 2 m, what is the longitudinal strain?
Detailed Solution for Test: Elasticity - Question 13
Using the formula ∈ = ΔL/L0, where ΔL = 0.02 m and L0 = 2 m, the longitudinal strain ∈ = 0.02 / 2 = 0.01.
Test: Elasticity - Question 14
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How does Young’s modulus (E) relate to a material’s stiffness?
Detailed Solution for Test: Elasticity - Question 14
Young’s modulus quantifies a material’s stiffness; a higher E indicates a higher resistance to elastic deformation, thus higher stiffness.
Test: Elasticity - Question 15
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What does the stress concentration factor (Kt) account for in materials?
Detailed Solution for Test: Elasticity - Question 15
The stress concentration factor (Kt) accounts for the impact of geometric discontinuities, like notches or holes, on stress distribution in materials.
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Important Questions for Elasticity

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