MACHINE DESIGN QUIZ

Eye bolts are used for

Transmission of power

Absorbing shock and vibrations

Lifting and transportation of machines and cubicles

Foundation purposes

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In hydrostatic bearings

Grease is used for lubrication

Do not require external supply of lubricant

The oil film is maintained by supplying oil under pressure

The Oil film pressure is generated only by the rotation of the journal

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The ultimate strength of steel in tension in comparison to shear is in the ratio of

0.084027777777778

0.042361111111111

0.12638888888889

0.085416666666667

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In a flange coupling, the keys are staggered at __________ along the circumference of the shafts in order to divide the weakening effect caused by key ways.

135°

90°

160°

180°

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The endurance limit for a mirror polished material will be __________ as compared to unpolished material.

None of these

Less

More

Same

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When a bolt is subjected to an external load, the stress induced in the bolt will be

Any one of these

Shear stress

Combined tensile and shear stress

Tensile stress

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Which of the following key is preferred for the condition when a large amount of impact type torque is to be transmitted in both direction of rotation?

Tangent key

Feather key

Gib-head key

Woodruff key

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The groove angle of pulleys for V-belt is

More than 400

420 to 450

340 to 360

300 to 320

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In a marine flange coupling, the thickness of flange is taken as

d/3

3d/4

d/4

d/2

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The number of slots in a 25 mm castle nut is

8

4

2

6

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