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Machine Design

Machine Design
Rankine's theory of failure is applicable for following type of materials

Brittle
Ductile
Elastic
Plastic

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Machine Design
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

Between 20d and 30d
Greater than 30d
Equal to inside diameter of pipe
Less than 20d

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Machine Design
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to(Where, Pc = tension in belt due to centrifugal force)

3 Pc
2 Pc
1 Pc
Pc/3

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Machine Design
For applications involving high stresses in one direction only the following type of thread would be best suited

Square thread
ISO metric thread
Acme thread
Buttress thread

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Machine Design
The dedendum is the radial distance from the

Addendum circle to the clearance circle
Top of a tooth to the bottom of a tooth
Pitch circle to the top of a tooth
Pitch circle to the bottom of a tooth

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

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

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