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Machine Design

Machine Design
The wear load should be __________ the dynamic load.

Equal to
Greater than
Less than
None of these

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Machine Design
If the centre distance of the mating gears having involute teeth is increased, then the pressure angle

Decreases
Increases
None of these
Remains unchanged

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Machine Design
Two helical springs of the same material and of equal circular cross-section, length and number of turns, but having radii 80 mm and 40 mm, kept concentrically (smaller radius spring within the larger radius spring), are compressed between two parallel planes with a load W. The inner spring will carry a load equal to

W/2
8W/9
2W/3
W/9

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Machine Design
A locking device extensively used in marine type connecting rod ends is a

Ring nut
Jam nut
Castle nut
Sawn nut

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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

Embeddability
Fatigue strength
Bondability
Comformability

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Machine Design
The shock resistance of steel is increased by adding

Cobalt and molybdenum
Nickel and chromium
Chromium
Nickel

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