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Machine Design

Machine Design
A steel containing _________ 0.8% carbon is known as hypo-eutectoid steel.

None of these
Greater than
Less than
Equal to

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Machine Design
The rated life of a bearing varies

Directly as load
Inversely as fourth power of load
Inversely as cube of load
Inversely as square of load

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Machine Design
For general industrial machinery, the ratio of the length of journal to its diameter is taken as

5 to 10
1 to 2
3 to 5
0.5 to 1

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Machine Design
Ball bearing type screws are found in following application

Crane
Aeroplane engines
Screw jack
Steering mechanism

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Machine Design
In a flange coupling, the flanges are coupled together by means of

None of these
Headless taper bolts
Bolts and nuts
Studs

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Machine Design
Two shafts ‘A’ and ‘B’ under pure torsion are of identical length and identical weight and are made of the same material. The shaft ‘A’ is solid and the shaft ‘B’ is hollow. We can say that

Shaft B is better than shaft A
None of these
Both the shafts are equally good
Shaft A is better than shaft B

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