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Machine Design

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

Less than
Equal to
More than
None of these

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Machine Design
The ratio of belt tensions (p1/p2) considering centrifugal force in flat belt is given byWhere m = mass of belt per meter (kg/m)v = belt velocity (m/s)f = coefficient of frictiona = angle of wrap (radians)

(P1 - mv²)/ (P2 - mv²) = e–ᶠα
(P1 - mv²)/ (P2 - mv²) = eᶠα
P1 / P2 = eᶠα
P1 / P2 = e–ᶠα

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Machine Design
Which of the following property is essential for spring materials?

Stiffness
Plasticity
Resilience
Ductility

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Machine Design
When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the

Sum of the initial tension and external load applied
External load applied
Initial tension
Initial tension or external load, whichever is greater

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Machine Design
When a shaft is subjected to combined twisting moment (T) and bending moment (M), then the equivalent twisting moment is equal to

M + √(M² + T²)
√(M² + T²)
(1/2) × [M + √(M² + T²)]
(1/2) × √(M² + T²)

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Machine Design
The smallest diameter of an external or internal screw thread is known as

Pitch diameter
Major diameter
Minor diameter
None of these

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