A balanced Δ -connected impedance load with ( 12 + j 9 ) Ω per phase is supplied by a balanced three-phase 60-Hz, 208-V source, (a) Calculate the line current, the total real and reactive power absorbed by the load, the load power factor, and the apparent load power, (b) Sketch a phasor diagram showing the line currents, the line-to-line source voltages, and the Δ -load currents. Use V a b as the reference.
A balanced Δ -connected impedance load with ( 12 + j 9 ) Ω per phase is supplied by a balanced three-phase 60-Hz, 208-V source, (a) Calculate the line current, the total real and reactive power absorbed by the load, the load power factor, and the apparent load power, (b) Sketch a phasor diagram showing the line currents, the line-to-line source voltages, and the Δ -load currents. Use V a b as the reference.
A balanced
Δ
-connected impedance load with
(
12
+
j
9
)
Ω
per phase is supplied by a balanced three-phase
60-Hz,
208-V
source, (a) Calculate the line current, the total real and reactive power absorbed by the load, the load power factor, and the apparent load power, (b) Sketch a phasor diagram showing the line currents, the line-to-line source voltages, and the
Δ
-load currents. Use
V
a
b
as the reference.
3. Consider the system described by the transfer function Gp(s)
polynomial controller to satisfy the below specifications:
1) The settling time is t = 1 second,
2) 0.1% peak overshoot,
3) and zero steady-state error
for a ramp input. The sampling period is T = 0.01 second.
1
=
Design a discrete-time
s(s+5)*
Problem 2
Does there exist a value a that makes the two systems S₁ and S₂ equal?
If so, what is this value ? If not, explain why.
S₁
x[n]
x[n]
D
D
-2
→
host
回洄
S
with h[m]
"
999.
усиз
-1012345
h
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