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Machine Design

Machine Design
A cotter joint is used to connect two __________ rods.

None of these
Parallel
Co-axial
Perpendicular

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Machine Design
A double fillet welded joint with parallel fillet weld of length 'l' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by

P/2.s.l
2P/s.l
√2P/s.l
P/√2.s.l

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

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

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Machine Design
Guest's theory is used for

Brittle materials
Elastic materials
Plastic materials
Ductile materials

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Machine Design
In designing a sleeve coupling, outer diameter of the sleeve is taken as (where d = Diameter of the shaft)

2d + 20 mm
d + 17 mm
2d + 13 mm
3.5d

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Machine Design
Wahl's stress factor __________ very rapidly as the spring index decreases.

Remain same
Increases
None of these
Decreases

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