1
GATE ME 1998
MCQ (Single Correct Answer)
+1
-0.3
The basic load rating of a ball bearing is
A
the maximum static radial load that can be applied without causing any plastic deformation of bearing components
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.
C
the maximum radial load that can be applied during operation without any plastic deformation of bearing components
D
a combination of radial and axial loads that can be applied without any plastic deformation
2
GATE ME 1998
MCQ (Single Correct Answer)
+1
-0.3
Bolts in the flanged end of pressure vessel are usually pre- tensioned. Indicate which of the following statements is not true
A
Pre- tensioning helps to seal the pressure vessel
B
Pre- tensioning increase the fatigue life of the bolts
C
Pre- tensioning reduces the maximum tensile stress in the bolts
D
Pre- tensioning helps to reduce the effect of pressure pulsations in the pressure vessels
3
GATE ME 1998
MCQ (Single Correct Answer)
+1
-0.3
Which theory of failure will you use for aluminium components under steady loading is
A
principal stress theory
B
principal strain theory
C
strain energy theory
D
maximum shear stress theory
4
GATE ME 1998
Subjective
+2
-0
A cylinder of $$155$$ $$mm$$ is to be reduced $$150$$ $$mm$$ diameter in one turning cut with a feed of $$0.15$$ $$mm$$/ revolution and a cutting speed of $$150$$ $$m/min$$ on a $$NC$$ lathe. What are the programmed spindle speeds programmed feed rate, and the material removal rate?
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