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Machine Design

Machine Design
Rankine's theory is used for

Elastic materials
Brittle materials
Ductile materials
Plastic materials

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Machine Design
The shear plane in case of bolts should

Never be across the threaded portion
Be normal to threaded portion of shank
Be parallel to axis of bolt
Be across threaded portion of shank

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Machine Design
In order to have smooth operation, the minimum number of teeth on the smaller sprocket, for moderate speeds, should be

17
25
15
21

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Machine Design
The constant factor in case of R10 series of preferred numbers is

1.06
1.58
1.12
1.26

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Machine Design
In a flange coupling, the bolts are subjected to

None of these
Compressive stress
Shear stress
Tensile stress

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Machine Design
Gear box is used

For speed reduction
To increase efficiency of system
To produce torque
To obtain variable speeds

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