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Machine Design

Machine Design
In Vickers hardness testing, the pyramid indentor apex is

152°
122°
136°
40°

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Machine Design
If a bearing is designated by the number 305, it means that the bearing is of

Light series whose bore is 25 mm
Light series whose bore is 5 mm
Medium series whose bore is 25 mm
Medium series whose bore is 5 mm

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Machine Design
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

0.6
0.25
0.5
0.2

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Machine Design
A coupling used to connect two perfectly aligned shafts, is

Compression coupling
Flange coupling
All of these
Muff coupling

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Universal joint
Knuckle joint
Cotter joint
Bolted joint

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Machine Design
The shear modulus of resilience is proportional to

(Shear stress)⁴
(Shear stress)3
(Shear stress)²
Shear stress

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