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Machine Design

Machine Design
The allowable static stress for steel gears is approximately __________ of the ultimate tensile stress.

One-fourth
One-third
Double
One-half

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Machine Design
Taper usually provided on cotter is

1 in 5
1 in 24
1 in 40
1 in 10

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Machine Design
The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)

1.2 d
0.5 d
0.8 d
d

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Machine Design
A backing ring is used inside the pipe joint when making a

Sleeve weld
Butt weld
Socket weld
Fillet weld

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Machine Design
If threads on a bolt are left hand, threads on nut will be

Left hand with same pitch
Right hand with same pitch
Right hand with fine pitch
Could be left or right hand

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Machine Design
Antifriction bearings are

Sleeve bearings
Thin lubricated bearings
None of these
Hydrodynamic bearings

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