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Machine Design

Machine Design
If a spring is cut down into two springs, the stiffness of cut springs will be

None of these
Same
Half
Double

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Machine Design
The material commonly used for crane hooks is

Aluminium
Cast iron
Wrought iron
Mild steel

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Machine Design
In the levers of __________ type, the mechanical advantage is less than one.

Third
First
None of these
Second

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Machine Design
The arms of the pulleys for flat belt drive have

Elliptical cross-section
Major axis in plane of rotation
All the three characteristics
Major axis twice the minor axis

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Machine Design
The tension on the slack side of the belt is __________ the tension on the tight side of the belt.

Less than
Equal to
Greater than
None of these

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Machine Design
When a circular beam of diameter d is subjected to a shear force F, the maximum shear stress induced will be

8F/ πd²
4F/ πd²
16F/ 3πd²
6F/ πd²

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