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Machine Design

Machine Design
The cross-section of the arm of a bell crank lever is

Elliptical
I-section
Any one of these
Rectangular

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Machine Design
The material commonly used for crane hooks is

Cast iron
Wrought iron
Aluminium
Mild steel

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Machine Design
Fabric belts are used in industrial applications because

They are unaffected by moisture and humidity
None of these
They can work at high temperature
They are cheap

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Machine Design
The property of a material which enables it to be drawn into wires with the application of a tensile force, is called

Ductility
Elasticity
Malleability
Plasticity

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Machine Design
The power transmitted by belt drive depends upon

Arc of contact
Belt velocity
All of these
Initial belt tension

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Machine Design
If a load W is applied instantaneously on a bar; Then the stress induced in bar will

Decrease with decrease in y
Increase with increase in y
Be independent of ratio of mass of load W to mass of bar (y)
Depend on other considerations

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