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Machine Design

Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

1.2 d
2.5 d
2 d
1.6 d

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Machine Design
A V-belt designated as B 4430 LP has

4430 mm as nominal pitch length
4430 mm as diameter of large pulley
4430 mm as centre distance between pulleys
4430 mm as diameter of small pulley

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Machine Design
Guest's theory of failure is applicable for following type of materials

Ductile
Elastic
Brittle
Plastic

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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

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

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Machine Design
The maximum bending stress in a curved beam having symmetrical section always occur at the

Inside fiber
Outside fiber
Neutral axis
Centroidal axis

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Machine Design
The yield point in static loading is __________ as compared to fatigue loading.

Same
Lower
Higher
None of these

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