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Machine Design

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

Back pitch
Margin
Diagonal pitch
Pitch

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Machine Design
In levers, leverage is the ratio of

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

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Machine Design
Which of the following screw thread is adopted for power transmission in either direction?

Acme threads
Multiple threads
Square threads
Buttress threads

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Machine Design
The objective of idler pulley in belt drive is to

Increase the wrap angle and belt tension
All the above objectives
Decrease the tendency of belt to slip
Increase the power transmission capacity

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Machine Design
The application of second type levers is found in

A pair of tongs
Hand wheel of a punching press
Lever of a loaded safety valve
Handle of a hand pump

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Machine Design
A column of length l is fixed at both ends. The equivalent length of the column is

2 l
l
l/√2
l/2

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