A roller bearing has a 22 kN radial load applied. For a life of
18000 hours at 1200 rev/min, specify the smallest suitable roller
bearing to use. Assume a rotating outer ring and provide relevant
source information for your selected bearing.
Q1. Roller bearings are subject to fatigue failure caused by
large contact loads. The
problem of finding the location of the maximum stress along the x
axis can be shown to be
equivalent to maximizing the function:
= + x
With the aid of the secant method, use
xo=0.98 and
x1=0.7 to determine to within
10-5 the
value of x that maximizes f(x).
Q 2. In an LRC series circuit, the impressed voltage
E(t) and the charge q(t) on the...
Assume the life of a roller bearing follows a Weibull
distribution with parameters β=2 and δ=7,500
hours.
Determine the probability that the bearing will last at least
8000 hours.
Verify your answer using R.
Determine the expect value and the variance.
Assume the life of a roller bearing follows a Weibull
distribution with parameters β=2 and δ=7,500
hours.
Determine the probability that the bearing will last at least
8000 hours.
Determine the expect value and the variance.
what is agency theory and more examples about agency
theory. what is legitimacy theory Ang give example about legitimacy
theory. What is Stakeholders theory and give examples of
stakeholders theory.
What is a deontological theory?
a theory about proper dental care
a theory assessing the overall consequences of an action
the same as a consequentialist theory
a theory assessing the morality of an action in terms of duty or
rightness in itself
Figure shows a contact lens table tht
contains information about contact lens prescriptions (hard, soft
and no contact lens) From the table derive quantitative association
rules by mapping tables to Boolean association rules.
ID
Age
Spectacle
Astigmatic
Tear Production
Contact lens
1
21
Myope
No
Reduced
None
2
24
Myope
No
Normal
Soft
3
20
Myope
Yes
Reduced
None
4
26
Myope
Yes
Normal
Hard
5
27
Hypermyope
No
Reduced
None
6
22
Hypermyope
No
Normal
Soft
7
28
Hypermyope...
What magnetic bearing is needed to retrace a line for the
conditions below..
1875 Magnetic Bearing
1875 Declination
Present Declination
a
N 650 35’ E
30 30’ W
20 30’ E
b
S 730 10’ W
20 20’ E
10 15’ W
c
N 890 55’ W
00 30’ W
40 15’ E
d
S 450 30’ E
70 15’ E
50 20’ W
Use the contact power theory to predict the maximum gas pressure
drop (in inches of water) across a scrubber which must be designed
to achieve 97% efficiency. Given: Gas Flow rate = 8000 acfm Liquid
Flow rate= 60 gal/min Liquid inlet pressure= 50 psi Alpha= 1.31
Beta= 1.12