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Machine Design

Machine Design
If a material fails below its yield point, failure would be due to

Fatigue
Sudden loading
Creep
Straining

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Machine Design
The shear plane in case of bolts should

Be normal to threaded portion of shank
Be parallel to axis of bolt
Be across threaded portion of shank
Never be across the threaded portion

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Machine Design
The distribution of the forces along the length of key fitted in a shaft

Varies linearly
Varies exponentially, being less near the torque-input end
Is uniform throughout
Varies exponentially, being more near the torque-input end

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Machine Design
While designing a screw in a screw jack against buckling failure, the end conditions for the screw are taken as

One end fixed and the other end free
Both the ends fixed
One end fixed and the other end hinged
Both the ends hinged

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Machine Design
The wire ropes make contact at

Sides of groove of the pulley
Anywhere in the groove of the pulley
Sides and bottom of groove of the pulley
Bottom of groove of the pulley

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Machine Design
The acme threads are usually found on

Spindles of bench vices
Feed mechanism of machine tools
Railway carriage couplings
Screw cutting lathes

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MORE MCQ ON Machine Design

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