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Machine Design

Machine Design
The pitch of threads on a Jock nut in comparison to pitch of nut is

Very fine
Same
Coarser
Finer

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Machine Design
The pipe joint mostly used for pipes carrying water at low pressures is

Union joint
Spigot and socket joint
Nipple joint
Socket joint

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Machine Design
When a helical compression spring is cut into halves, the stiffness of the resulting spring will be

One-fourth
One-half
Same
Double

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Machine Design
In Vickers hardness testing, the pyramid indentor apex is

152°
122°
40°
136°

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Machine Design
The objective of 'crowning' of the flat pulleys of belt drive is to

Increase the power transmission capacity
Prevent the belt joint from damaging the belt surface
Increase the belt velocity
Prevent the belt from running off the pulley

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Machine Design
Which of the following cotter joint will be used to connect strap end of a connecting rod?

Any one of these
Sleeve and cotter joint
Gib and cotter joint
Spigot and socket cotter joint

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