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PRACTICE QUESTION BANK

আর্কিটেকচার

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1251. MCQPractice set · Question 54

Angular displacement 4π rad হলে revolution সংখ্যা কত?

a.
1
b.
2
c.
4
d.
8

Correct answer: b

Revolutions=θ/(2π)=4π/(2π)=2।

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1252. MCQPractice set · Question 55

একটি wheel 3 revolution ঘুরলে angular displacement কত?

a.
3π
b.
6π
c.
9π
d.
π/3

Correct answer: b

θ=3×2π=6π rad।

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1253. MCQPractice set · Question 56

একটি wheel 120 rpm-এ ঘুরলে frequency কত?

a.
1 Hz
b.
2 Hz
c.
60 Hz
d.
120 Hz

Correct answer: b

120 rpm=120/60=2 revolution/s=2 Hz।

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1254. MCQPractice set · Question 57

120 rpm-এর angular velocity কত?

a.
2π rad/s
b.
4π rad/s
c.
120π rad/s
d.
π/2 rad/s

Correct answer: b

f=2 Hz, তাই ω=2πf=4π rad/s।

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1255. MCQPractice set · Question 58

60 rpm-এর angular velocity কত?

a.
π/2 rad/s
b.
π rad/s
c.
2π rad/s
d.
60π rad/s

Correct answer: c

60 rpm=1 Hz, তাই ω=2π rad/s।

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1256. MCQPractice set · Question 59

300 rpm-এর frequency কত?

a.
3 Hz
b.
5 Hz
c.
10 Hz
d.
300 Hz

Correct answer: b

f=300/60=5 Hz।

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1257. MCQPractice set · Question 60

300 rpm-এর angular velocity কত?

a.
5π rad/s
b.
10π rad/s
c.
20π rad/s
d.
300π rad/s

Correct answer: b

f=5 Hz, তাই ω=10π rad/s।

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1258. MCQPractice set · Question 61

Rolling without slipping-এ condition কী?

a.
v=rω
b.
v=ω/r
c.
v=0
d.
ω=0 সবসময়

Correct answer: a

Contact point-এ slipping না থাকলে centre-এর speed v=rω।

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1259. MCQPractice set · Question 62

Rolling wheel-এর angular velocity দ্বিগুণ হলে একই radius-এ translational speed কী?

a.
অর্ধেক
b.
দ্বিগুণ
c.
চার গুণ
d.
অপরিবর্তিত

Correct answer: b

v=rω এবং r constant।

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1260. MCQPractice set · Question 63

Rolling without slipping-এ contact point-এর instantaneous velocity কী?

a.
zero
b.
v
c.
2v
d.
rω²

Correct answer: a

Ground-এর relative contact point মুহূর্তে rest-এ থাকে।

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