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Machine Design

Machine Design
Oil in journal bearing should be applied at the point where load is

Maximum
Any one of the above
Nil or lightest
Average

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Machine Design
If two springs are in parallel then their overall stiffness will be

Same
None of these
Double
Half

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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.

Equal to
Less than
None of these
Greater than

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Machine Design
Stress concentration factor is defined as the ratio of

Maximum stress to the endurance limit
Nominal stress to the maximum stress
Maximum stress to the nominal stress
Nominal stress to the endurance limit

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Machine Design
A steel containing 0.8% carbon is known as

Hypereutectoid steel
Eutectoid steel
None of these
Hypo-eutectoid steel

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Machine Design
When a hole of diameter ‘d’ is punched in a metal of thickness 't', then the force required to punch a hole is equal to (where τu = Ultimate shear strength of the material of the plate)

π/4 × d².τu
t.τu
π/4 × d² × tτu
πd.t.τu

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