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Machine Design

Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

30-50 m/s
3-15 m/s
15-30 m/s
1-3 m/s

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Machine Design
The strap end of a connecting rod of steam engine is joined by

Spigot socket cotter joint
Sleeve and cotter joint
Gib of cotter joint
Knuckle joint

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Machine Design
A locking device extensively used in automobile industry is a

Ring nut
Jam nut
Castle nut
Sawn nut

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Machine Design
Tearing resistance required to tear off the plate per pitch length is (where p = Pitch of rivets, d = Dia. of rivet hole, and σt = Permissible tensile stress for plate material)

(p - d) t.σt
p.d.σt
p.t.σt

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Machine Design
The number of slots in a 25 mm castle nut is

2
6
4
8

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Machine Design
The rocker arms in internal combustion engines are of__________.

Second type levers
Third type levers
None of these
First type levers

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