Machine Design
Which of the following statement is correct for gears?

The pitch circle diameter is equal to the product of module and number of teeth
All of these
The addendum is less than dedendum
The pitch circle is always greater than the base circle

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Machine Design
In oilness bearings

Do not require external supply of lubricant
The oil film pressure is generated only by the rotation of the journal
The oil film is maintained by supplying oil under pressure
Grease required to be applied after some intervals

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