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সিভিল ইঞ্জিনিয়ারিং

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3911. MCQPractice set · Question 63

Uniform hydrostatic pressure-এ কোন modulus ব্যবহৃত হয়?

a.
bulk modulus
b.
shear modulus
c.
Young's modulus only
d.
viscosity

Correct answer: a

Uniform pressure volume change ঘটায়, তাই bulk modulus প্রযোজ্য।

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3912. MCQPractice set · Question 64

Axial tension-এ কোন modulus ব্যবহৃত হয়?

a.
Young's modulus
b.
bulk modulus only
c.
shear modulus only
d.
density

Correct answer: a

Longitudinal deformation Young's modulus দিয়ে সম্পর্কিত।

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3913. MCQPractice set · Question 65

Isotropic material কী?

a.
সব direction-এ একই properties
b.
direction অনুযায়ী সম্পূর্ণ ভিন্ন properties
c.
শুধু liquid
d.
শুধু gas

Correct answer: a

Isotropic material-এর elastic properties orientation-independent।

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3914. MCQPractice set · Question 66

Anisotropic material কী?

a.
direction অনুযায়ী properties বদলায়
b.
সব direction একই
c.
শুধু vacuum
d.
শুধু water

Correct answer: a

Anisotropic material-এর stiffness orientation-এর উপর নির্ভর করে।

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3915. MCQPractice set · Question 67

E, G ও Poisson ratio-এর relation কোনটি?

a.
E=2G(1+ν)
b.
E=G/(1+ν)
c.
E=G+ν
d.
E=2G/(1+ν)

Correct answer: a

Isotropic elastic material-এর standard relation E=2G(1+ν)।

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3916. MCQPractice set · Question 68

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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3917. MCQPractice set · Question 69

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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3918. MCQPractice set · Question 70

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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3919. MCQPractice set · Question 71

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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3920. MCQPractice set · Question 72

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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