A single-phase two-winding transformer rated 9 0 MVA , 8 0 / 12 0 kV is to be connected as an autotransformer rated 8 0 / 2 00 kV . Assume that the transformer is ideal. (a) Draw a schematic diagram of the ideal transformer connected as an autotransformer. showing the voltages, currents, and dot notation for polarity. (b) Determine the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of the kA rating is transferred by magnetic induction?
A single-phase two-winding transformer rated 9 0 MVA , 8 0 / 12 0 kV is to be connected as an autotransformer rated 8 0 / 2 00 kV . Assume that the transformer is ideal. (a) Draw a schematic diagram of the ideal transformer connected as an autotransformer. showing the voltages, currents, and dot notation for polarity. (b) Determine the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of the kA rating is transferred by magnetic induction?
Solution Summary: The author illustrates the schematic diagram of an ideal transformer connected to an auto transformer.
A single-phase two-winding transformer rated
9
0
MVA
,
8
0
/
12
0
kV
is to be connected as an autotransformer rated
8
0
/
2
00
kV
.
Assume that the transformer is ideal. (a) Draw a schematic diagram of the ideal transformer connected as an autotransformer. showing the voltages, currents, and dot notation for polarity. (b) Determine the permissible kVA rating of the autotransformer if the winding currents and voltages are not to exceed the rated values as a two-winding transformer. How much of the kA rating is transferred by magnetic induction?
The joint pdf of random variables X=1, 2 and Y=1, 2, 3 is
P(X,Y) = X [0.0105
Find (a) The value of k.
(c) P(X21, Y £2).
Y
0.2 0.15]
0.18
(b) the marginal probability function of X and Y.
(d) x, Hy
Use Gauss Elimination method to solve the following systems of linear equations.
x13x24x3
8
3x1
-x2+5x3
7
4x1+5x2
-
7x3 = 2.
HANDWRITTEN SOLUTION PLEASE NOT USING CHATGPT
Chapter 3 Solutions
Power System Analysis and Design (MindTap Course List)
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