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Machine Design

Machine Design
The centre to centre distance between two consecutive rivets in a row, is called

Margin
Diagonal pitch
Pitch
Back pitch

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Machine Design
If the size of a standard specimen for a fatigue testing machine is increased, the endurance limit for the material will

None of these
Increase
Decrease
Have same value as that of standard specimen

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Machine Design
In order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)

2 d
2.5 d
1 d
1.5 d

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Machine Design
According to I.B.R., the distance between the rows of rivets, for equal number of rivets in more than one row for lap joint or butt joint (chain riveting) shall not be less than

2 d
1.5 d
2.5 d
d

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Machine Design
Lewis equation in gears is used to find the

Fatigue stress
Shear stress
Compressive stress in bending
Tensile stress in bending

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Machine Design
A tapered key which fits in a key way in the hub and the bottom of which is shaped to fit the curved surface of the shaft, is known as,

Hollow key
Hollow saddle key
Soft key
None of these

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