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PRACTICE QUESTION BANK

আর্কিটেকচার

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3531. MCQPractice set · Question 83

Force 2000 N ও area 0.02 m² হলে stress কত?

a.
100000 Pa
b.
40000 Pa
c.
1000 Pa
d.
0.00001 Pa

Correct answer: a

Stress=2000/0.02=100000 Pa।

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3532. MCQPractice set · Question 84

Stress 50 MPa ও strain 0.0005 হলে Young's modulus কত?

a.
100 GPa
b.
25 GPa
c.
50 MPa
d.
0.025 GPa

Correct answer: a

E=50 MPa/0.0005=100000 MPa=100 GPa।

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3533. MCQPractice set · Question 85

একটি 100 mm rod 0.2 mm বাড়লে percentage strain কত?

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

Correct answer: a

Strain=0.2/100=0.002=0.2%。

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3534. MCQPractice set · Question 86

Original area 100 mm² ও final area 80 mm² হলে reduction কত?

a.
20%
b.
80%
c.
25%
d.
10%

Correct answer: a

Reduction=(100−80)/100×100=20%。

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3535. MCQPractice set · Question 87

Failure stress 300 MPa এবং working stress 100 MPa হলে factor of safety কত?

a.
3
b.
0.33
c.
200
d.
30000

Correct answer: a

FOS=300/100=3।

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3536. MCQPractice set · Question 88

Young's modulus 200 GPa ও stress 100 MPa হলে strain কত?

a.
0.0005
b.
0.5
c.
2
d.
200

Correct answer: a

Strain=100×10⁶/(200×10⁹)=0.0005।

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3537. MCQPractice set · Question 89

একটি 1 m rod-এ strain 0.002 হলে extension কত?

a.
2 mm
b.
0.2 mm
c.
20 mm
d.
0.002 mm

Correct answer: a

Extension=strain×length=0.002×1=0.002 m=2 mm।

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3538. MCQPractice set · Question 90

100 kN load 500 mm² area-তে দিলে stress কত?

a.
200 MPa
b.
20 MPa
c.
0.2 MPa
d.
500 MPa

Correct answer: a

Stress=100000/500×10⁻⁶=200 MPa।

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3539. MCQPractice set · Question 91

A material-এর strain 0.01 এবং Young's modulus 10 GPa হলে stress কত?

a.
100 MPa
b.
10 MPa
c.
1 GPa
d.
0.1 MPa

Correct answer: a

Stress=Eε=10 GPa×0.01=0.1 GPa=100 MPa।

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3540. MCQPractice set · Question 92

একটি rod-এর axial 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=200000 MPa=200 GPa।

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