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Machine Design

Machine Design
Taper usually provided on cotter is

1 in 10
1 in 40
1 in 24
1 in 5

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Machine Design
A key way lowers

Both the strength and rigidity of the shaft
The ductility of the shaft
The strength of the shaft
The rigidity of the shaft

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Machine Design
When the length of the journal is equal to the diameter of the journal, then the bearing is said to be a

Short bearing
Square bearing
Long bearing
Medium bearing

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Machine Design
The square threads are usually found on

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

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Machine Design
The wire ropes make contact at

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

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Machine Design
The connecting rod bolts are tightened up so that tightening stress

Is about yield point divided by safety factor
Approaches yield point
Is 50% of yield point
Is just sufficient to hold parts together

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MORE MCQ ON Machine Design

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