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Machine Design

Machine Design
The material generally used for aircraft components is

Stainless steel
Mild steel
High speed steel
Aluminium

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Machine Design
Silver based solder is used for

Brazing
Soft soldering
Fusion welding
Flaring

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Machine Design
In helical gears, the right hand helixes on one gear will mesh __________ helixes on the other gear.

None of these
Left hand
Right hand
Both A and B

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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

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

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Machine Design
The width of the pulley should be __________ width of the belt.

Less than
Greater than
Equal to
None of these

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Machine Design
The connecting rod bolts are tightened up so that tightening stress

Approaches yield point
Is about yield point divided by safety factor
Is just sufficient to hold parts together
Is 50% of yield point

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