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Machine Design

Machine Design
The stress in the threaded part of the bolt will be __________ as compared to the shank.

Lower
None of these
Same
Higher

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Machine Design
The material generally used for aircraft components is

Mild steel
Aluminium
Stainless steel
High speed steel

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Machine Design
Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Tangent key
Woodruff key
Gib-head key
Feather key

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Machine Design
Which of the following statement is correct, for two shafts connected in parallel?

Shear stress in each shaft is the same
Torsional stiffness of each shaft is the same
Angle of twist of each shaft is the same
Torque in each shaft is the same

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Machine Design
In a flange coupling, the bolts are subjected to

None of these
Tensile stress
Shear stress
Compressive stress

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Machine Design
The notch angle of the Izod impact test specimen is

10°
45°
20°
30°

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