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Machine Design

Machine Design
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

0.2
0.5
0.25
0.6

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Machine Design
The wire ropes make contact at

Sides and bottom of groove of the pulley
Bottom of groove of the pulley
Anywhere in the groove of the pulley
Sides of groove of the pulley

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Machine Design
The pipe joint mostly used for pipes carrying water at low pressures is

Union joint
Nipple joint
Socket joint
Spigot and socket joint

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Machine Design
The included angle for the British Association thread is

29°
60°
47.3°
55°

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Machine Design
The ratio of endurance limit in shear to the endurance limit in flexure is

0.33
0.55
0.5
0.4

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Machine Design
The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called

Fluctuating stress
Repeated stress
Yield stress
Alternating stress

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