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টেক্সটাইল ইঞ্জিনিয়ারিং

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3601. MCQPractice set · Question 53

Stress-strain curve-এর area কী নির্দেশ করে?

a.
energy per unit volume
b.
mass
c.
density
d.
temperature

Correct answer: a

Curve-এর নিচের area material-এর strain energy density।

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3602. MCQPractice set · Question 54

Elastic hysteresis কী?

a.
loading ও unloading path-এর energy loss
b.
zero strain
c.
stress increase
d.
density change

Correct answer: a

Loading-unloading curve-এর enclosed area dissipated energy।

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3603. MCQPractice set · Question 55

Hysteresis energy সাধারণত কীতে যায়?

a.
heat
b.
mass
c.
volume
d.
charge

Correct answer: a

Internal friction-এর ফলে hysteresis energy heat হয়।

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3604. MCQPractice set · Question 56

Necking কী?

a.
local cross-sectional area কমে যাওয়া
b.
uniform expansion
c.
compression only
d.
zero strain

Correct answer: a

Ductile tensile specimen-এ ultimate point-এর পর necking শুরু হতে পারে।

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3605. MCQPractice set · Question 57

Engineering stress কোন area ব্যবহার করে?

a.
original area
b.
instantaneous area
c.
volume
d.
final length

Correct answer: a

Engineering stress load/original cross-sectional area।

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3606. MCQPractice set · Question 58

True stress কোন area ব্যবহার করে?

a.
instantaneous area
b.
original area only
c.
volume
d.
length

Correct answer: a

True stress current area দিয়ে load ভাগ করে।

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3607. MCQPractice set · Question 59

Engineering strain কোন length ব্যবহার করে?

a.
original length
b.
instantaneous length only
c.
area
d.
volume

Correct answer: a

Engineering strain change in length/original length।

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3608. MCQPractice set · Question 60

Percentage elongation কোন property বোঝায়?

a.
ductility
b.
density
c.
viscosity
d.
pressure

Correct answer: a

Fracture-এর পর elongation ductility-এর measure।

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3609. MCQPractice set · Question 61

Percentage reduction in area কোন property-এর indicator?

a.
ductility
b.
hardness only
c.
bulk modulus
d.
density

Correct answer: a

Area reduction tensile ductility নির্দেশ করে।

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3610. MCQPractice set · Question 62

Material-এর strength কী?

a.
failure প্রতিরোধে stress বহনের ক্ষমতা
b.
শুধু deformation resistance
c.
density
d.
surface tension

Correct answer: a

Strength material-এর failure হওয়ার আগে allowable stress capacity।

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