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Machine Design

Machine Design
The strength of the unriveted plate (P) per pitch length is equal to

p.t.σt
p.d.σt
(p - d) t.σt
(p - d) σt

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Machine Design
Failure of a material is called fatigue when it fails

Below the elastic limit
At the yield point
Below the yield point
At the elastic limit

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Machine Design
In cylindrical cams, the follower moves

In any direction irrespective of cam axis
In a direction perpendicular to the cam axis
Along the cam axis
In a direction parallel to the cam axis

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Machine Design
For a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be

10
4
8
6

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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

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

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Machine Design
A type of brake commonly used in motor cars is a

Band and block brake
Shoe brake
Band brake
Internal expanding brake

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