A three-phase transformer is rated 1 000 MVA , 22 0 Y/22 Δ kV . The Y-equivalent short-circuit impedance, considered equal to the leakage reactance, measured on the low-voltage side is 0.1 Ω . Compute the per-unit reactance of the transformer. In a system in which the base on the high-voltage side of the transformer is 1 00 MVA , 23 0 kV what value of the per-unit reactance should be used to represent this transformer?
A three-phase transformer is rated 1 000 MVA , 22 0 Y/22 Δ kV . The Y-equivalent short-circuit impedance, considered equal to the leakage reactance, measured on the low-voltage side is 0.1 Ω . Compute the per-unit reactance of the transformer. In a system in which the base on the high-voltage side of the transformer is 1 00 MVA , 23 0 kV what value of the per-unit reactance should be used to represent this transformer?
Solution Summary: The author explains the value of per unit reactance of the transformer, where base on high voltage side is given.
A three-phase transformer is rated
1
000
MVA
,
22
0
Y/22
Δ
kV
.
The Y-equivalent short-circuit impedance, considered equal to the leakage reactance, measured on the low-voltage side is
0.1
Ω
. Compute the per-unit reactance of the transformer. In a system in which the base on the high-voltage side of the transformer is
1
00
MVA
,
23
0
kV
what value of the per-unit reactance should be used to represent this transformer?
Find the impedance theoretically of a wire if it carries the frequency 10 kHz have a voltage is 8v, the
current is 2mA, resistance is 13 k, inductance 29 mH and capacitance 0.1 uf
Find the outer radius of a coaxial cable whose characteristic impedance is 10Ω. The inner radius and the dielectric constant are 0.08m and 0.5 respectively.
For the given Full-Wave Bridge Rectifier circuit below with capacitor filter, it produces a ripple voltage waveform shown. If V2 is given
as 18 volts and V1 is given as 6 volts, compute for the ripple peak-to-peak voltage, dc voltage and ripple factor. If the load resistance
has a value of 2 kiloohms, how much should be the dc current?. compute for the peak output voltage at the output of the rectifier. If
silicon diodes are used, what is the value of the secondary peak voltage?. If N1 is given as 1400 and N2 is given as 600, compute for
the primary peak voltage.
D1
D2
D3
D4
v(Volts)
v2
(seconds)
Chapter 3 Solutions
MindTap Engineering for Glover/Overbye/Sarma's Power System Analysis and Design, 6th Edition, [Instant Access], 1 term (6 months)
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