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Machine Design

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

p.t.σt
p.d.σt
(p - d) t.σt
(p - d) σt

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Machine Design
For longitudinal joint in boilers, the type of joint used is

Any one of the above
Butt joint with double cover plate
Lap joint with one ring overlapping the other
Butt joint with single cover plate

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Machine Design
Two rigid plates are clamped by means of bolt and nut with an initial force F. After tightening, a separating force P (P < F) is applied to the lower plate, which in turn acts on the nut. The tension in the both after this is

F.P
F + P
F
P

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Machine Design
Taper usually provided on cotter is

1 in 24
1 in 10
1 in 5
1 in 40

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Machine Design
The design calculations for members subject to fluctuating loads with the same factor of safety, yield the most conservative estimates when using

Soderberg relation
None of these
Goodman relation
Gerber relation

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Machine Design
The ball bearings are, usually, made from

Medium carbon steel
High speed steel
High carbon steel
Low carbon steel

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