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Machine Design

Machine Design
In a marine flange coupling, the pitch circle diameter of bolts is taken as

2 d
2.5 d
1.6 d
1.2 d

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Machine Design
Aircraft body is usually fabricated by

Pre-casting
Casting
Riveting
Welding

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Machine Design
The shock resistance of steel is increased by adding

Cobalt and molybdenum
Nickel and chromium
Chromium
Nickel

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Machine Design
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

One end fixed and the other end free
Both the ends hinged
One end fixed and the other end hinged
Both the ends fixed

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Machine Design
The backlash for spur gears depends upon

Both module and pitch line velocity
Tooth profile
Module
Pitch line velocity

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

6
8
4
2

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