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Machine Design

Machine Design
The constant factor in case of R10 series of preferred numbers is

1.58
1.26
1.12
1.06

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Machine Design
For standard coarse threads of nut, the threads will be as strong in failure by shear as the bolt in tension, if the height of nut (h) is approximately

0.8 times
0.6 times
0.4 times
0.7 times

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Machine Design
In a marine flange coupling, the thickness of flange is taken as

3d/4
d/2
d/4
d/3

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Machine Design
When the pulley or other mating piece is required to slide along the shaft, a __________ sunk key is used.

Rectangular
Square
None of these
Parallel

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Machine Design
The pitch of threads on a Jock nut in comparison to pitch of nut is

Coarser
Very fine
Same
Finer

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Machine Design
A localized compressive stress at the area of contact between two members is known as

Tensile stress
Shear stress
Bearing stress
Bending stress

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