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Machine Design

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

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

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Machine Design
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

Both the shafts are equally good
Shaft A is better than shaft B
None of these
Shaft B is better than shaft A

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Machine Design
When screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be

Acme threads
Buttress threads
Square threads
Knuckle threads

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Machine Design
The minimum number of teeth on the pinion which will mesh with any gear without interference for 20° full depth involute teeth will be

12
24
18
14

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Machine Design
According to Indian standards, total numbers of fundamental deviations are

10
25
20
15

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Machine Design
The bending moment ‘M’ and a torque ‘T’ is applied on a solid circular shaft. If the maximum bending stress equals to maximum shear stress developed, then ‘M’ is equal to

T/2
4 T
1 T
2 T

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