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Machine Design

Machine Design
A cotter joint is used to connect two __________ rods.

None of these
Co-axial
Perpendicular
Parallel

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Machine Design
If the tearing efficiency of a riveted joint is 75%, then the ratio of diameter of rivet to the pitch is equal to

0.5
0.6
0.25
0.2

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Machine Design
The efficiency of a riveted joint is equal to

Pc /P
Least of Pt, Ps and Pc/P
Pt /P
Ps /P

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Machine Design
The contact ratio for gears is

Greater than one
Zero
Less than one
None of these

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Machine Design
A spring of stiffness 1000 N/m is stretched initially by 100 mm from the undeformed position. The work required to stretch it by another 100 mm is

5 N-m
10 N-m
7 N-m
15 N-m

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Machine Design
In unilateral system of tolerance, the tolerance is allowed on

One side of the actual size
One side of the nominal size
Both sides of the actual size
Both sides of the nominal size

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