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Machine Design

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

360°
120°
180°
270°

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Machine Design
Which of the following bearing is preferred for oscillating conditions?

Taper roller bearing
Double row roller bearing
Angular contact single row ball bearing
Needle roller bearing

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Machine Design
The initial tension (in newtons) in a bolt used for making a fluid tight joint like steam engine cover joints, is calculated by the relation (where d = Nominal diameter of bolt in mm)

1420 d
2840 d
1680 d
2080 d

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Machine Design
The shear modulus of resilience is proportional to

(Shear stress)⁴
Shear stress
(Shear stress)3
(Shear stress)²

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Machine Design
In the levers of first type, the mechanical advantage is ________ one.

Less than
Equal to
None of these
More than

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Machine Design
When a nut is tightened by placing a washer below it, the bolt will be subjected to following type of loads

Shear
Tension
Combined loads
Compression

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