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Machine Design

Machine Design
Crushing resistance required to crush the rivet per pitch length is

p.t.σc
p.d.σc
(p - d) t.σc
n.d.t.σc

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Machine Design
Which of the following pipe joints would be suitable for pipes carrying steam?

Expansion
Threaded
Flanged
Bell and spigot

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Machine Design
The bending moment ‘M’ and a torque ‘T’ is applied on a solid circular shaft. If the maximum bending stress equals to maximum shear stress developed, then ‘M’ is equal to

T/2
2 T
4 T
1 T

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Machine Design
The railway carriage couplings have

Knuckle threads
Square threads
Acme threads
Buttress threads

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Machine Design
The contact ratio for gears is

Less than one
Zero
None of these
Greater than one

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Machine Design
Stress concentration in static loading is more serious in

Equally serious in both cases
Brittle materials
Ductile materials
Depends on other factors

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