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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°
180°
360°
270°

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Machine Design
The dynamic tooth load is due to

Irregularities in tooth profiles
All of these
Deflections of teeth under load
Inaccuracies of tooth spacing

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Machine Design
According to I.B.R., the efficiency of a triple riveted butt joint with double straps of unequal width (5 rivets per pitch length) should be

45 to 60%
63 to 70%
70 to 83%
80 to 90%

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Machine Design
The number of slots in a 25 mm castle nut is

6
8
4
2

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Machine Design
A spring is used to

Measure forces
All of these
Store energy
Apply forces

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Machine Design
The ball bearings are, usually, made from

Medium carbon steel
Low carbon steel
High carbon steel
High speed steel

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MORE MCQ ON Machine Design

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