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Machine Design

Machine Design
The contact ratio for gears is

None of these
Zero
Less than one
Greater than one

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Machine Design
The sleeve or muff coupling is designed as a

Dun cylinder
Thick cylinder
Solid shaft
Hollow shaft

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Machine Design
When a beam of rectangular cross-section of width b and depth d, is subjected to a shear force F, the maximum shear stress induced will be

4F/bh
3F/2bh
2F/bh
F/bh

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Machine Design
When two non-intersecting and non-coplanar shafts are connected by gears, the arrangement is known as

Spiral gearing
Spur gearing
Helical gearing
Bevel gearing

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Machine Design
The shock absorbing capacity of a bolt may be increased by

Tightening the bolt properly
Decreasing its shank diameter
Increasing its shank diameter
Making the shank diameter equal to core diameter of thread

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Machine Design
The relation between the pitch of the chain (p) and pitch circle diameter of the sprocket (D) is given by (where T = Number of teeth on the sprocket)

p = D sin (120°/T)
p = D sin (180°/T)
p = D sin (90°/T)
p = D sin (360°/T)

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