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PRACTICE QUESTION BANK

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3671. MCQPractice set · Question 23

E=150 GPa এবং ν=0.25 হলে K কত?

a.
100 GPa
b.
50 GPa
c.
150 GPa
d.
75 GPa

Correct answer: a

K=E/[3(1−2ν)]=150/1.5=100 GPa।

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3672. MCQPractice set · Question 24

E=80 GPa এবং G=30 GPa হলে ν প্রায় কত?

a.
0.333
b.
0.5
c.
0.1
d.
0.75

Correct answer: a

ν=E/(2G)−1=80/60−1≈0.333।

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3673. MCQPractice set · Question 25

K=50 GPa এবং ν=0.3 হলে E কত?

a.
60 GPa
b.
50 GPa
c.
75 GPa
d.
30 GPa

Correct answer: a

E=3K(1−2ν)=150×0.4=60 GPa।

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3674. MCQPractice set · Question 26

Young's modulus কী?

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

Correct answer: a

Young's modulus axial stiffness নির্দেশ করে।

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3675. MCQPractice set · Question 27

Bulk modulus কী মাপে?

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

Correct answer: a

Bulk modulus volume compression প্রতিরোধের পরিমাপ।

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3676. MCQPractice set · Question 28

Shear modulus-এর সূত্র কোনটি?

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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3677. MCQPractice set · Question 29

Poisson ratio কী?

a.
lateral strain/longitudinal strain-এর magnitude
b.
stress/strain
c.
force/area
d.
mass/volume

Correct answer: a

Axial loading-এ transverse ও axial strain-এর ratio Poisson ratio।

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3678. MCQPractice set · Question 30

Elastic modulus-এর SI unit কী?

a.
pascal
b.
joule
c.
watt
d.
metre

Correct answer: a

Modulus stress-এর মতো Pa বা N/m² unit বহন করে।

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3679. MCQPractice set · Question 31

Young's modulus বেশি হলে material কেমন?

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

Correct answer: a

High Young's modulus একই stress-এ কম strain দেয়।

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3680. MCQPractice set · Question 32

Bulk modulus বেশি হলে কী বোঝায়?

a.
compression প্রতিরোধ বেশি
b.
সহজে compressible
c.
low stiffness
d.
high viscosity

Correct answer: a

High bulk modulus volume change প্রতিরোধ করে।

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