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Machine Design

Machine Design
Which one of the following is a positive drive?

Rope drive
Crossed flat belt drive
Chain drive
V-belt drive

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Machine Design
The shear modulus of resilience is proportional to

(Shear stress)²
(Shear stress)3
Shear stress
(Shear stress)⁴

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

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

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Machine Design
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

2d + 20 mm
2d + 13 mm
d + 17 mm
3.5d

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Machine Design
Stress concentration factor is defined as the ratio of

Nominal stress to the endurance limit
Maximum stress to the nominal stress
Maximum stress to the endurance limit
Nominal stress to the maximum stress

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Machine Design
Buttress threads are usually found on

Spindles of bench vices
Screw cutting lathes
Feed mechanisms
Railway carriage couplings

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