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Machine Design

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

122°
136°
152°
40°

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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

124 d
151 d
168 d
138 d

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Machine Design
The crest diameter of a screw thread is same as

Core diameter
Major diameter
Pitch diameter
Minor diameter

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Machine Design
A key capable of tilting in a recess milled out in a shaft is known as

Flat saddle key
Hollow saddle key
Feather key
Woodruff key

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Machine Design
Ball bearing type screws are found in following application

Screw jack
Crane
Steering mechanism
Aeroplane engines

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Machine Design
The V-belts are particularly suitable for __________ drives.

Both A and B
Short
Long
None of these

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