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Machine Design

Machine Design
In radial bearings, the load acts __________ to the axis of rotation.

Perpendicular
Parallel
None of these
Both A and B

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Machine Design
A metal pipe of 1 m diameter contains a fluid having a pressure of 1 N/mm². If the permissible tensile stress in the metal is 20 N/mm², then the thickness of the metal required for making the pipe will be

10 mm
5 mm
15 mm
25 mm

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Machine Design
When the fulcrum is in between the load and effort, the lever is said to be of

Third type
Any one of these
First type
Second type

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Machine Design
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)

1420 d
2840 d
1680 d
2080 d

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Machine Design
Which of the following screw thread is adopted for power transmission in either direction?

Square threads
Acme threads
Multiple threads
Buttress threads

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Machine Design
The draw of cotter should not be more than

3 mm
8 mm
12 mm
6 mm

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