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Machine Design

Machine Design
In designing a flange coupling, the pitch circle diameter of bolts is taken as (where d = Diameter of the shaft)

2 d
4 d
3 d
5 d

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Machine Design
A crankshaft is a __________ shaft.

None of these
Transmission
Machine frame
Machine

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Machine Design
The property of a material which enables it to be drawn into wires with the application of a tensile force, is called

Malleability
Ductility
Elasticity
Plasticity

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Machine Design
If P1 and P2 are the tight and slack side tensions in the belt, then the initial tension Pi (according to Barth) will be equal to (Where, Pc is centrifugal tension)

[⅟₂ × (P1 + P2)] + Pc
⅟₂× (P1 + P2)
P1 + P2
[(√P1 + √P2)/2]²

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Machine Design
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.

Greater than unity
None of these
Less than unity
Equal to 1

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Machine Design
In case of pressure vessels having closed ends, the fluid pressure induces

None of these
Longitudinal stress
Circumferential stress
Shear stress

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