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Machine Design

Machine Design
The suitable material for belt used in flour mill is

Leather
Canvas or cotton duck
Rubber
Balata gum

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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

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

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Machine Design
A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)

Greater than 30d
Equal to inside diameter of pipe
Between 20d and 30d
Less than 20d

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Machine Design
The backlash for spur gears depends upon

Module
Pitch line velocity
Both module and pitch line velocity
Tooth profile

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Machine Design
In a transverse fillet welded joint, the size of weld is __________ the throat of weld.

2 times
0.5 times
Equal to
Double

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Machine Design
In designing a connecting rod, it is considered like __________ for buckling about Y-axis.

One end fixed and the other end hinged
One end fixed and the other end free
Both ends fixed
Both ends hinged

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