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Machine Design

Machine Design
The shock resistance of steel is increased by adding

Nickel and chromium
Cobalt and molybdenum
Nickel
Chromium

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Machine Design
Maximum principal stress theory is applicable for

Brittle materials
All of these
Ductile materials
Elastic materials

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Machine Design
For a square key made of mild steel, the shear and crushing strength are related as

Shear strength is equal to crushing strength
Shear strength is greater than crushing strength
Shear strength is less than crushing strength
None of these

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Machine Design
In levers, leverage is the ratio of

Load arm to the effort arm
Load lifted to the effort applied
Effort arm to the load arm
Mechanical advantage to the velocity ratio

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Machine Design
Ball bearing type screws are found in following application

Crane
Screw jack
Steering mechanism
Aeroplane engines

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Machine Design
The ratio of pitch circle diameter in millimeters to the number of teeth, is called

Module
Diametral pitch
None of these
Circular pitch

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