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Machine Design

Machine Design
A riveted joint is a __________ fastening.

Temporary
None of these
Either A or B
Permanent

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Machine Design
Which is positive drive?

Timing belt
V belt drive
Flat belt drive
Crossed belt drive

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Machine Design
The bending stress in a curved beam is

Maximum at the neutral axis
Zero at the centroidal axis
Zero at the point other than centroidal axis
None of these

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Machine Design
In order to have a connecting rod equally strong in buckling about X-axis and Y-axis, the moment of inertia about X-axis should be __________ the moment of inertia about Y-axis.

Four times
Twice
Three times
Equal to

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Machine Design
The strength of a riveted joint is equal to

Crushing strength of rivet (Pc)
Least value of Pt Ps and Pc
Tearing strength of plate (Pt)
Shearing strength of rivet (Ps)

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Machine Design
The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as

(Kt + 1)/ (Kf + 1)
(Kf - 1)/ (Kt - 1)
(Kt - 1)/ (Kf - 1)
(Kf + 1)/ (Kt + 1)

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