1
GATE ME 2005
MCQ (Single Correct Answer)
+1
-0.3
Which one of the following is criterion in the design of hydrodynamic journal bearings?
A
Sommerfeld number
B
Rating life
C
Specific dynamic capacity
D
Rotation factor
2
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
3
GATE ME 1997
MCQ (Single Correct Answer)
+1
-0.3
To restore stable operating condition in a hydrodynamic journal bearing, when it encounters higher magnitude loads.
A
oil viscosity is to be decreased
B
oil viscosity is to be increased
C
oil viscosity index is to be increased
D
oil viscosity index is to be decreased
4
GATE ME 1996
MCQ (Single Correct Answer)
+1
-0.3
In thick film hydrodynamic journal bearings, the coefficient of friction
A
increases with increase in load
B
is independent of load
C
decreases with increase in load
D
may increase or decrease with increase in load
GATE ME Subjects
Turbo Machinery
EXAM MAP