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Machine Design

Machine Design
The size of a gear is usually specified by

Circular pitch
Pitch circle diameter
Pressure angle
Diametral pitch

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Machine Design
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation

138 d
124 d
168 d
151 d

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Machine Design
The acme threads are usually found on

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

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Machine Design
A thin spherical shell of internal diameter d is subjected to an internal pressure p. If V is the storage capacity of shell, then its diameter will be

(6V/ π)1/2
(6V/ π)1/3
(6V/ π)3
(6V/ π)2

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Machine Design
When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the

Head
Thread
Shank
Middle

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Machine Design
A key way lowers

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

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MORE MCQ ON Machine Design

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