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Machine Design

Machine Design
If two springs are in parallel then their overall stiffness will be

Same
Half
Double
None of these

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Machine Design
The centre to centre distance between two consecutive rivets in a row, is called

Back pitch
Diagonal pitch
Pitch
Margin

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Machine Design
The condition for maximum power transmission is that the maximum tension in the flat belt should be equal to (Where, Pc = tension in belt due to centrifugal force)

1 Pc
Pc/3
3 Pc
2 Pc

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Machine Design
In levers, leverage is the ratio of

Load lifted to the effort applied
Effort arm to the load arm
Mechanical advantage to the velocity ratio
Load arm to the effort arm

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Machine Design
Taper usually provided on cotter is

1 in 10
1 in 40
1 in 5
1 in 24

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Machine Design
The gears are termed as medium velocity gears, if their peripheral velocity is

1-3 m/s
15-30 m/s
30-50 m/s
3-15 m/s

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