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Machine Design

Machine Design
The following type of nut is used with alien bolt

Hexagonal nut
Any one of the above
Castle nut
Slotted nut

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Machine Design
If a bearing is designated by the number 305, it means that the bearing is of

Light series whose bore is 5 mm
Medium series whose bore is 25 mm
Medium series whose bore is 5 mm
Light series whose bore is 25 mm

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Machine Design
The objective of idler pulley in belt drive is to

Increase the power transmission capacity
All the above objectives
Decrease the tendency of belt to slip
Increase the wrap angle and belt tension

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Machine Design
The number of slots in a 25 mm castle nut is

4
8
6
2

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Machine Design
When bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as

Angular bevel gears
Internal bevel gears
Crown bevel gears
Mitre gears

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

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

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