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Machine Design

Machine Design
The standard length of the shaft is

All of these
7 m
5 m
6 m

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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)

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

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Machine Design
A coupling used to connect two perfectly aligned shafts, is

Flange coupling
All of these
Compression coupling
Muff coupling

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Machine Design
If a spring is cut down into two springs, the stiffness of cut springs will be

Half
None of these
Double
Same

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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.σt
p.t.σt
(p - d) t.σt

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

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

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