Answer:
Explanation:
From the information given:
Life requirement = 40 kh = 40
Speed (N) = 520 rev/min
Reliability goal = 0.9
Radial load = 2600 lbf
To find C10 value by using the formula:
where;
The Weibull parameters include:
∴
Using the above formula:
Recall that:
1 kN = 225 lbf
∴
Answer:
a)initial quality of water 0.724.
b)mass of water =2.45 kg
c)T=70°F
Explanation:
h=732.5 Btu/lbm
h=763.33 KJ/kg (1 Btu=1.05 kj)
T=70°F⇒T=21.1°C
(a)From steam table
Properties of saturated steam at 21.1°C
To find dryness fraction
x=0.27
So initial quality of water 0.724.
(b)
where v is specific volume
From steam table at 21.1°C
V=
0.002458=
So mass of water =2.45 kg
(c)
Actually water will take latent heat ,it means that heating of will take place at constant temperature and constant pressure.So we can say that final temperature of water will remain same (T=70°F).
The smallest allowable depth is for the milled portion of bar.
<u>Explanation:</u>
Given,
Magnitude of force,
Allowable stress,
cross sectional area of bar,
e - eccentricity
The internal forces in the cross section are equivalent to a centric force P and a bending couple M.
Allowable stress
Moment of Inertia,
By substituting values we get,
On solving above equation we get,