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Machine Design

Machine Design
For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

4
8
10
6

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Machine Design
According to Indian standards, a bolt thread of 6 mm size of coarse pitch and with allowance on the threads and normal tolerance grade is designated as

M6 - 8d
M8
M6
M8 - 6d

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Machine Design
I.S. specifies following total number of grades of tolerances

20
18
22
16

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Machine Design
For general industrial machinery, the ratio of the length of journal to its diameter is taken as

5 to 10
3 to 5
1 to 2
0.5 to 1

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Machine Design
Two shafts will have equal strength, if

Diameter of both the shafts is same
Material of both the shafts is same
Twisting moment of both the shafts is same
Angle of twist of both the shafts is same

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Machine Design
In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

0.5 times
Double
Equal to
2 times

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