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Machine Design

Machine Design
The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.

Less than
More than
None of these
Equal to

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Machine Design
Resistance to fatigue of a material is measured by

Young's modulus
Coefficient of elasticity
Endurance limit
Elastic limit

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Machine Design
In a journal bearing, the load on the bearing is __________ to the axis of the journal.

Both A and B
None of these
Parallel
Perpendicular

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Machine Design
According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be

63 to 70%
45 to 60%
80 to 90%
70 to 83%

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

[(√P1 + √P2)/2]²
⅟₂× (P1 + P2)
[⅟₂ × (P1 + P2)] + Pc
P1 + P2

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Machine Design
Endurance limit or fatigue limit is the maximum stress that a member can withstand for an infinite number of load applications without failure when subjected to

Dynamic loading
Combined static and dynamic loading
Completely reversed loading
Static loading

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