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Machine Design

Machine Design
The material commonly used for machine tool bodies is

Cast iron
Mild steel
Brass
Aluminium

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

152°
136°
40°
122°

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Machine Design
A feather key is generally

Loose in shaft and tight in hub
Loose in both shaft and hub
Tight in both shaft and hub
Tight in shaft and loose in hub

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Machine Design
For crank shaft bearings, the ratio of the length of the journal to its diameter is_________.

None of these
Greater than unity
Equal to 1
Less than unity

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Machine Design
The objective of idler pulley in belt drive is to

Decrease the tendency of belt to slip
Increase the power transmission capacity
Increase the wrap angle and belt tension
All the above objectives

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Machine Design
In a butt welded joint, the size of weld is __________ the throat of weld.

Equal to
Double
2 times
0.5 times

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