Consider an ideal transformer with N 1 = 3000 and N 2 = 1000 turns. Let winding 1 be connected to a source whose voltage is e 1 ( t ) = 100 ( 1 − | t | ) volts for − 1 ≤ t ≤ 1 and e 1 ( t ) = 0 for | t | > 1 second. A 2- farad capacitor is connected across winding 2. Sketch e 1 ( t ) , e 2 ( t ) , i 1 ( t ) , and i 2 ( t ) versus time t .
Consider an ideal transformer with N 1 = 3000 and N 2 = 1000 turns. Let winding 1 be connected to a source whose voltage is e 1 ( t ) = 100 ( 1 − | t | ) volts for − 1 ≤ t ≤ 1 and e 1 ( t ) = 0 for | t | > 1 second. A 2- farad capacitor is connected across winding 2. Sketch e 1 ( t ) , e 2 ( t ) , i 1 ( t ) , and i 2 ( t ) versus time t .
Solution Summary: The author illustrates the plot of ln_1(t)=100(1-t) V
Consider an ideal transformer with
N
1
=
3000
and
N
2
=
1000
turns. Let winding 1 be connected to a source whose voltage is
e
1
(
t
)
=
100
(
1
−
|
t
|
)
volts
for
−
1
≤
t
≤
1
and
e
1
(
t
)
=
0
for
|
t
|
>
1
second.
A 2-
farad capacitor is connected across winding 2. Sketch
e
1
(
t
)
,
e
2
(
t
)
,
i
1
(
t
)
,
and
i
2
(
t
)
versus time t.
Questions 16 to 20 (Write True or False)
A16
A larger inductor produces a smaller rate of change of current.
A17
KVL states that E IR + E EMF = 0 for any open circuits.
A18
For a sine waveform, the value of form factor is 1.414.
A19
In a purely inductive circuit, the current lags the voltage by II/4 rads.
In an ideal transformer, the rate of change of flux is the same for both primary
A20
and secondary.
1. What impedance vector 0 – j22 represents:A. A pure resistance.B. A pure inductance.C. A pure capacitance.D. An inductance combined with a resistance.
8. The circuit below is similar to Problem 7 and operates at a frequency of 10 kHz. Circuit element Z
can be either a capacitor or inductor. Assuming the transformer is ideal, determine the inductance
or capacitance of Z and the turns ratio N that optimizes the power delivered to the load, RL, then
calculate the power in RL-
1:N 2
R = 200 2
%3D
10290
-j4 2
Chapter 3 Solutions
Power System Analysis and Design (MindTap Course List)
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How does a Transformer work - Working Principle electrical engineering; Author: The Engineering Mindset;https://www.youtube.com/watch?v=UchitHGF4n8;License: Standard Youtube License