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Machine Design

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

Plastic
Ductile
Brittle
Elastic

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Machine Design
A connecting rod is designed as a

Strut
All of these
Long column
Short column

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Machine Design
A plate with an elliptical hole in the centre, with semi-major axis (a) perpendicular to the direction of loading and semi-minor axis (b) along the direction of loading, is subjected to a pull P. The maximum stress induced at the edge of the hole is equal to (where σ = Stress for a plate with no hole i.e. nominal stress)

σ [1 + (2a/b)]
σ [1 + (b/2a)]
σ [1 + (3a/b)]
σ [1 + (b/3a)]

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Machine Design
The bearing characteristic number in a hydrodynamic bearing depends upon

Viscosity, speed and load
Viscosity, speed and bearing pressure
Length, width and speed
Length, width and load

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Machine Design
Guest's theory is used for

Ductile materials
Plastic materials
Elastic materials
Brittle materials

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Machine Design
The function of the washer is to

Absorb shocks and vibrations
Fill up the axial gap
Provide bearing area
Provide cushioning effect

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