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সিভিল ইঞ্জিনিয়ারিং

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3761. MCQPractice set · Question 13

Hooke's law কী বলে?

a.
elastic limit পর্যন্ত stress ∝ strain
b.
stress সবসময় strain-এর inverse
c.
strain zero
d.
সব deformation plastic

Correct answer: a

Elastic limit-এর মধ্যে stress ও strain সরল সমানুপাতিক।

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3762. MCQPractice set · Question 14

Hooke's law কোন সীমার মধ্যে প্রযোজ্য?

a.
elastic limit বা proportional limit-এর মধ্যে
b.
fracture-এর পরে
c.
সবসময়
d.
শুধু liquid-এ

Correct answer: a

Hooke's law linear elastic region-এ valid।

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3763. MCQPractice set · Question 15

Young's modulus-এর সূত্র কী?

a.
longitudinal stress/longitudinal strain
b.
force×area
c.
volume/mass
d.
pressure×time

Correct answer: a

Young's modulus axial stress ও axial strain-এর ratio।

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3764. MCQPractice set · Question 16

Bulk modulus কী?

a.
volumetric stress/volumetric strain
b.
shear stress/shear strain
c.
mass/volume
d.
force/length

Correct answer: a

Bulk modulus uniform pressure-এর বিরুদ্ধে volume deformation resistance।

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3765. MCQPractice set · Question 17

Shear modulus-এর সূত্র কী?

a.
shear stress/shear strain
b.
normal stress/volume
c.
force×length
d.
mass/area

Correct answer: a

Shear modulus tangential stress ও angular strain-এর ratio।

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3766. MCQPractice set · Question 18

Elastic modulus-এর unit কী?

a.
Pa
b.
dimensionless
c.
m
d.
kg

Correct answer: a

Modulus stress/strain এবং stress-এর মতো Pa unit বহন করে।

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3767. MCQPractice set · Question 19

Young's modulus বেশি হলে material কেমন?

a.
বেশি stiff
b.
বেশি soft
c.
বেশি viscous
d.
কম dense

Correct answer: a

High E একই stress-এ কম strain, অর্থাৎ বেশি stiffness।

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3768. MCQPractice set · Question 20

Stress-strain curve-এর initial slope কী?

a.
Young's modulus
b.
ultimate stress
c.
fracture strain
d.
density

Correct answer: a

Linear অংশের slope Young's modulus নির্দেশ করে।

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3769. MCQPractice set · Question 21

Proportional limit কী?

a.
stress ও strain proportional থাকার শেষ সীমা
b.
fracture point
c.
zero load
d.
maximum volume

Correct answer: a

এই সীমার পর stress-strain relation আর strictly linear নয়।

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3770. MCQPractice set · Question 22

Elastic limit কী?

a.
load সরালে permanent deformation না থাকার শেষ সীমা
b.
maximum density
c.
fracture point
d.
zero strain

Correct answer: a

Elastic limit-এর মধ্যে deformation recoverable থাকে।

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