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Machine Design

Machine Design
In a full journal bearing, the angle of contact of the bearing with the journal is

120°
270°
180°
360°

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Machine Design
For circumferential joint in boilers, the type of joint used is

Any one of the above
Butt joint with single cover plate
Lap joint with one ring overlapping the other
Butt joint with double cover plate

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Machine Design
The cold working of metals is carried out __________ the recrystallization temperature.

Below
None of these
At
Above

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Machine Design
The property of a bearing material which has the ability to accommodate small particles of dust, grit etc. without scoring the material of the journal, is called

Comformability
Bondability
Embeddability
Fatigue strength

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Machine Design
According to Unwin's formula, the relation between the diameter of rivet hole (d) and the thickness of plate (t) is given by (where d and t are in mm)

d = 1.6√t
d = 6√t
d = 2√t
d = √t

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Machine Design
A steel containing 0.8% carbon is known as

Eutectoid steel
None of these
Hypereutectoid steel
Hypo-eutectoid steel

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