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Machine Design

Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

(p - d) t.σt
p.t.σt
(p - d) σt
p.d.σt

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Machine Design
A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as,

Soft key
Hollow key
Hollow saddle key
None of these

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Machine Design
A spring is used to

Store energy
Measure forces
Apply forces
All of these

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Machine Design
In order to permit the thermal expansion/contraction of tubing, it should be

Crimped
Flared
Bent
Honed

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Machine Design
In helical bevel gearing, the axes of shafts are __________ and the teeth are curved.

None of these
Intersecting and non-parallel
Non-intersecting and non-parallel
Intersecting

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Machine Design
A closely coiled helical spring is acted upon by an axial force. The maximum shear stress developed in the spring is τ. The half of the length of the spring if cut off and the remaining spring is acted upon by the same axial force. The maximum shear stress in the spring in new condition will be

τ
2 τ
4 τ
τ/2

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