Answer:
![K_f = 1.422](https://tex.z-dn.net/?f=K_f%20%3D%201.422)
Explanation:
We know that relationship between fatigue and stress concentration factor
![K_f = 1+q(K_t-1)](https://tex.z-dn.net/?f=K_f%20%3D%201%2Bq%28K_t-1%29)
Where
=fatigue concentration factor
=stress concentration factor
q=Notch sensitivity
Here D/d=2 and r/d=0.125
Now from standard design data book ![K_t=1.79](https://tex.z-dn.net/?f=K_t%3D1.79)
For Sut=440 MPa and r= 4 mm
q=0.8
Now by putting the values
![K_f = 1+q(K_t-1)](https://tex.z-dn.net/?f=K_f%20%3D%201%2Bq%28K_t-1%29)
![K_f = 1.8(1.79-1)](https://tex.z-dn.net/?f=K_f%20%3D%201.8%281.79-1%29)
![K_f = 1.422](https://tex.z-dn.net/?f=K_f%20%3D%201.422)
Answer:
(a) Calculate the field, armature, and load currents versus load = 306A
(b) Determine the terminal voltage at no-load and at rated load conditions = 300V
(c) Calculate the voltage regulation of the generator. Use the no-load voltage as the base value = 6.67%
(d) Plot the terminal voltage as a function of the load. Determine the load that corresponds to a 5% voltage drop using the no-load voltage as the base = 294.74V
Explanation:
CHECK THE ATTACHED FILES FOR DETAILED EXPLANATION.
Answer:
so hard it is
Explanation:
I don't know about this
please mark as brainleast
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Answer:
a. 60V
b. 77.46V
c. 600 W
d. there would be no effect when this is done
Explanation:
a.
to get value of average output
Vo = VsD
Vs = 100V
D = 0.6
Vo = 100 V * 0.6
Vo = 60V
Therefore 60V is the value of average voltage
b.
The rms voltage:
= Vs√D
= 100 x √0.6
= 100 x 0.7746
= 77.46V
the rms voltage is Therefore 77.46V
c.
value of average power:
= (RMS)²/R
R = 10
when we put into formula above,
= (77.46)²/10
= 6000.05/10
= 600.005 W
= 600W
d.
If switching frequency is changes to be 2khz it would actually have no effect on the average voltage, average power or rms voltage.
Answer: 18,100
Explanation: two farms that grow wheat and corn.