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সিভিল ইঞ্জিনিয়ারিং

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3891. MCQPractice set · Question 43

E, K ও Poisson ratio-এর relation কোনটি?

a.
E=3K(1−2ν)
b.
E=K(1+ν)
c.
E=K/3
d.
E=2K(1+ν)

Correct answer: a

Isotropic material-এ E=3K(1−2ν)।

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3892. MCQPractice set · Question 44

Incompressible material-এর Poisson ratio প্রায় কত?

a.
0.5
b.
0
c.
1
d.
−1

Correct answer: a

Incompressible isotropic material-এর ν প্রায় 0.5।

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3893. MCQPractice set · Question 45

Poisson ratio শূন্য হলে lateral strain কী?

a.
শূন্য
b.
longitudinal strain-এর সমান
c.
দ্বিগুণ
d.
অসীম

Correct answer: a

ν=0 হলে axial loading-এ lateral strain থাকে না।

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3894. MCQPractice set · Question 46

Kinematic নয়, elastic modulus-এর dimension কী?

a.
ML⁻¹T⁻²
b.
ML²T⁻²
c.
MLT⁻¹
d.
dimensionless

Correct answer: a

Modulus stress-এর dimension ML⁻¹T⁻²।

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3895. MCQPractice set · Question 47

একটি material-এর E=200 GPa এবং ν=0.25 হলে G কত?

a.
80 GPa
b.
250 GPa
c.
50 GPa
d.
200 GPa

Correct answer: a

G=E/[2(1+ν)]=200/2.5=80 GPa।

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3896. MCQPractice set · Question 48

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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3897. MCQPractice set · Question 49

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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3898. MCQPractice set · Question 50

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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3899. MCQPractice set · Question 51

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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3900. MCQPractice set · Question 52

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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