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Machine Design

Machine Design
The ratio of the ultimate stress to the design stress is known as

Elastic limit
Factor of safety
Strain
Bulk modulus

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Machine Design
According to Indian standards, total numbers of fundamental deviations are

15
10
20
25

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Machine Design
When two helical springs of equal lengths are arranged to form a cluster spring, then

Shear stress in each spring will be equal
Load taken by each spring will be half the total load
Both A and B is correct
Only A is correct

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Machine Design
Which of the following statement is correct, for two shafts connected in parallel?

Angle of twist of each shaft is the same
Shear stress in each shaft is the same
Torsional stiffness of each shaft is the same
Torque in each shaft is the same

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Machine Design
When two non-parallel or intersecting but coplanar shafts are connected by gears, the arrangement is known as,

Worm gearing
Bevel gearing
None of these
Helical gearing

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Machine Design
A screw is said to be a self locking screw, if its efficiency is

Less than 50%
More than 50%
Equal to 50%
None of these

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