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Machine design part-1

Machine design part-1
Question:-
Option (A)
the maximum static radial load that can be applied without causing any plastic deformation of bearing component
Option (B)
the radial load at which 90% of the group of apparently identical bearings run for one million revolutions before the first evidence of failure
Option (C)
the maximum radial load that can be applied during operation without any plastic deformation of bearing component
Option (D)
a combination of radial and axial loads that can be applied without any plastic deformation
Correct Option:
B
Question:-
Option (A)
equal
Option (B)
one half
Option (C)
twice
Option (D)
four times
Correct Option:
D
Question:-
Option (A)
d.t.τu
Option (B)
π.d.t.τu
Option (C)
(π/4)d2u
Option (D)
(π/4)d2.t.τu
Correct Option:
B
Question:-
Option (A)
Sommerfield number
Option (B)
Rating life
Option (C)
Specific Dynamic capacity
Option (D)
Rotation factor
Correct Option:
A