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Machine Design

Machine Design
In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

0.5 times
Double
2 times
Equal to

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Machine Design
The value of stress concentration factor depends upon

None of these
Material of the part
Geometry of the part
Material and geometry of the part

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Machine Design
A shaft is subjected to fluctuating loads for which the normal torque (T) and bending moment (M) are 1000 N-m and 500 N-m respectively. If the combined shock and fatigue factor for bending is 1.5 and combined shock and fatigue factor for torsion is 2, then the equivalent twisting moment for the shaft is

2050 N-m
2100 N-m
2000 N-m
2136 N-m

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Machine Design
The arms of the pulleys for flat belt drive have

Elliptical cross-section
All the three characteristics
Major axis twice the minor axis
Major axis in plane of rotation

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Machine Design
When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is

0.5
0.35
0.2
0.65

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Machine Design
In order to remove internal stresses produced by hardening the steel, the process usually adopted is

Annealing
Normalizing
Spheroidizing
Tempering

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