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সিভিল ইঞ্জিনিয়ারিং

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3841. MCQPractice set · Question 93

E=200 GPa ও stress=50 MPa হলে strain কত?

a.
0.00025
b.
0.0025
c.
4
d.
250

Correct answer: a

Strain=50/200000=0.00025।

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3842. MCQPractice set · Question 94

Original length 500 mm ও extension 1 mm হলে percentage strain কত?

a.
0.2%
b.
2%
c.
0.02%
d.
20%

Correct answer: a

Strain=1/500=0.002=0.2%。

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3843. MCQPractice set · Question 95

A=0.02 m² ও P=2 kN হলে stress কত?

a.
100 kPa
b.
40 kPa
c.
1 kPa
d.
0.01 kPa

Correct answer: a

Stress=2000/0.02=100000 Pa=100 kPa।

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3844. MCQPractice set · Question 96

একটি rod-এর E=100 GPa, A=100 mm², L=1 m, P=10 kN হলে extension কত?

a.
1 mm
b.
0.1 mm
c.
10 mm
d.
0.01 mm

Correct answer: a

δ=PL/AE=10000/(100×10⁹×100×10⁻⁶)=0.001 m=1 mm।

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3845. MCQPractice set · Question 97

একটি rod-এর stiffness 1 MN/m ও load 2 kN হলে extension কত?

a.
2 mm
b.
0.5 mm
c.
20 mm
d.
2000 mm

Correct answer: a

δ=P/k=2000/1,000,000=0.002 m=2 mm।

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3846. MCQPractice set · Question 98

একটি spring k=200 N/m ও x=0.1 m হলে energy কত?

a.
1 J
b.
2 J
c.
10 J
d.
0.1 J

Correct answer: a

U=½×200×0.1²=1 J।

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3847. MCQPractice set · Question 99

একটি spring k=100 N/m ও force=5 N হলে extension কত?

a.
0.05 m
b.
0.5 m
c.
20 m
d.
500 m

Correct answer: a

x=F/k=5/100=0.05 m।

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3848. MCQPractice set · Question 100

Stress 80 MPa ও strain 0.0004 হলে E কত?

a.
200 GPa
b.
32 GPa
c.
80 GPa
d.
0.000005 GPa

Correct answer: a

E=80/0.0004=200 GPa।

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3849. MCQPractice set · Question 1

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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3850. MCQPractice set · Question 2

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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