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Machine Design

Machine Design
The pitch diameter is the __________ diameter of an external or internal screw thread.

Smallest
Largest
Effective
None of these

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Machine Design
The taper on a rectangular sunk key is

1 in 32
1 in 48
1 in 100
1 in 16

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Machine Design
For a shaft diameter of 100 mm, the number of bolts in a flange coupling should be

6
10
4
8

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Machine Design
Cast iron pipes are mainly used

For conveying steam
In water and sewage systems
All of these
In pressure lubrication systems on prime movers

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Machine Design
When the bolt is very yielding as compared to the connected members, then the resultant load on the bolt will be equal to the

Initial tension or external load, whichever is greater
External load applied
Initial tension
Sum of the initial tension and external load applied

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Machine Design
The piston rod of a steam engine is usually connected to the cross-head by means of

Universal joint
Knuckle joint
Cotter joint
Bolted joint

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