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Gearup-JE'19: Machine Design Quiz-4
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Question 1
The expression for bearing characteristics number is:
where,
Z = viscosity of lubricant (N-s/mm2)
nj= journal speed (rev/s)
P = unit bearing pressure (N/mm2)
Question 2
Rankine’s theory is good for____.
Question 3
If the load on a ball bearing is reduced to half, then its life would be ________.
Question 4
Which one of the following has highest velocity ratio?
Question 5
Which of the following statements regarding 'mitre gears' is correct These are employed for
Question 6
The Sommerfeld number is given by __________.
Where:
r = radius of journal
c = radial clearance
μ = viscosity of lubricant (N-s/mm2)
ns = journal speed (rev/s)
p = unit bearing pressure (N/mm2)
Where:
r = radius of journal
c = radial clearance
μ = viscosity of lubricant (N-s/mm2)
ns = journal speed (rev/s)
p = unit bearing pressure (N/mm2)
Question 7
Most commonly the material used for bearing is
Question 8
The type of riveted joint shown in the figure below is ________.
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ESE & GATE MEGeneralMay 12ESE & GATE ME
