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Machine Design

Machine Design
The most important dimension in the design of a nut is

Height
Inside diameter
Pitch diameter
Outside diameter

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Machine Design
According to Indian standard specifications, a Grey cast iron designated by 'FG 200' means that the

Minimum tensile strength is 200 N/mm²
Carbon content is 2%
Maximum compressive strength is 200 N/mm²
Maximum shear strength is 200 N/mm²

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Machine Design
Gear box is used

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

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Machine Design
The period during which the cam follower remains at rest, when cam moves, is known as

Idle period
Constant period
Dwell period
Fixed period

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Machine Design
A key made from a cylindrical disc having segmental cross-section, is known as

Gib head key
Feather key
Woodruff key
Flat saddle key

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Machine Design
Antifriction bearings are

Sleeve bearings
Hydrodynamic bearings
None of these
Thin lubricated bearings

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