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Machine Design

Machine Design
In the levers of __________ type, the mechanical advantage is less than one.

First
None of these
Third
Second

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Machine Design
According to maximum normal stress theory, the maximum normal stress in the shaft is

(1/2) × √(σ² × 4τ²)
√(σ² × 4τ²)
σ + √(σ² × 4τ²)
(1/2) × [σ + √(σ² × 4τ²)]

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Machine Design
In nitrated parts, the origins of the fatigue cracks will occur at

None of these
Within the core
Surface
Just below the surface

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Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

1.2 d
2 d
2.5 d
1.6 d

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Machine Design
A key made from a cylindrical disc having segmental cross-section, is known as

Woodruff key
Feather key
Gib head key
Flat saddle key

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

Shear stress
Tensile stress
Compressive stress
None of these

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