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Machine Design

Machine Design
The radial distance of a tooth from the pitch circle to the top of the tooth is called

Addendum
Clearance
Working depth
Dedendum

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Machine Design
A cotter joint is used to connect two __________ rods.

Co-axial
Parallel
Perpendicular
None of these

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Machine Design
The dedendum circle diameter is equal to (where φ = Pressure angle)

Addendum circle diameter × cosφ
Clearance circle diameter × cosφ
Pitch circle diameter × cosφ
Pitch circle diameter × sinφ

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

168 d
138 d
124 d
151 d

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Machine Design
The expression 0.175 - 0.841/T is the Lewis form factor for

20° stub system
None of these
14½° composite and full depth involute system
20° full depth involute system

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Machine Design
A tapered key which fits in a key way in the hub and is flat on the shaft, is known as

Feather key
Gib-head key
Wood ruff key
Flat saddle key

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