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Machine Design

Machine Design
Shear stress theory is applicable for

Ductile materials
Brittle materials
All of these
Elastic materials

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Machine Design
The ratio of driving tensions in V-belt drives is __________ flat belt drives.

sin α times less than
Equal to
sin α times more than
cosec α times more than

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Machine Design
The distribution of the forces along the length of key fitted in a shaft

Varies exponentially, being more near the torque-input end
Varies exponentially, being less near the torque-input end
Varies linearly
Is uniform throughout

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Machine Design
In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)

3 d
4 d
5 d
2 d

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.26
1.58
1.06
1.12

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Machine Design
The longitudinal stress is __________ of the circumferential stress.

Two-third
Three-fourth
Double
One-half

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