1. Find the current in the 17 Qresistor in the network shown in Fig. 2.194 (a) by using (a) star/delta conversion and (b) Thevenin's theorem. The numbers indicate the resistance of each member in ohms. 10/3A
1. Find the current in the 17 Qresistor in the network shown in Fig. 2.194 (a) by using (a) star/delta conversion and (b) Thevenin's theorem. The numbers indicate the resistance of each member in ohms. 10/3A
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A
Delta/Star Conversion
1. Find the current in the 17 Q resistor in the network shown in Fig. 2.194 (a) by using (a) star/delta
conversion and (b) Thevenin's theorem. The numbers indicate the resistance of each member in
ohms.
|10/3A]
2. Convert the star circuit of Fig. 2.194 (b) into its equivalent delta circuit. Values shown are in chms.
Derive the formula used.
(Elect. Technology, Indor Univ.)
www.
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Tutorial Problems No. 2.6
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11
R
10
2R
Fig. 2.198
Fig. 2.194 (a)
Fig.2.194 (b)
3. Determine the resistance between points A and B in the network of Fig. 2.195.
B
2R
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20
www
til
R
14.23 (Elect. Technology, Indor Univ.)
4. Three resistances of 2002 each are connected in star. Find the equivalent delta resistance. If the source
of e.m.f. of 120 V is connected across any two terminals of the equivalent delta-connected resistances,
find the current supplied by the source.
160 Q3A (Elect. Engg. Calcuita Univ.)
m
8V (G)
DC Network Theorems 143
in
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Fig. 2.196
Fig. 2.197
5. Using delta/star transformation determine the current through the galvanometer in the Wheatstone bridge
of Fig. 2.196.
10.025 A
6. With the aid of the delta star transformation reduce the network given in Fig. 2.197 (a) to the equivalent
circuit shown at (b)
[R = 5.38 Q
M
30 V
in
7. Find the equivalent resistance between points A and B of the circuit shown in Fig. 2.198.
[1.4 R
8. By first using a delta-star transformation on the mesh ABCD of the circuit shown in Fig. 2. 199. prove that
the current supplied by the battery is 90/83 A.
20
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30
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5
www.
Fig. 2.195
R
Fig. 2.199
شلش
8V
23
(b)
N
B
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Transcribed Image Text:||
A
Delta/Star Conversion
1. Find the current in the 17 Q resistor in the network shown in Fig. 2.194 (a) by using (a) star/delta
conversion and (b) Thevenin's theorem. The numbers indicate the resistance of each member in
ohms.
|10/3A]
2. Convert the star circuit of Fig. 2.194 (b) into its equivalent delta circuit. Values shown are in chms.
Derive the formula used.
(Elect. Technology, Indor Univ.)
www.
www.
6
41
ww
153
wwwwww
17
www
15 Vo
R
50
15
www
Tutorial Problems No. 2.6
www
11
R
10
2R
Fig. 2.198
Fig. 2.194 (a)
Fig.2.194 (b)
3. Determine the resistance between points A and B in the network of Fig. 2.195.
B
2R
www
20
www
til
R
14.23 (Elect. Technology, Indor Univ.)
4. Three resistances of 2002 each are connected in star. Find the equivalent delta resistance. If the source
of e.m.f. of 120 V is connected across any two terminals of the equivalent delta-connected resistances,
find the current supplied by the source.
160 Q3A (Elect. Engg. Calcuita Univ.)
m
8V (G)
DC Network Theorems 143
in
10
90
www
40
ww
10
m²
协
Fig. 2.196
Fig. 2.197
5. Using delta/star transformation determine the current through the galvanometer in the Wheatstone bridge
of Fig. 2.196.
10.025 A
6. With the aid of the delta star transformation reduce the network given in Fig. 2.197 (a) to the equivalent
circuit shown at (b)
[R = 5.38 Q
M
30 V
in
7. Find the equivalent resistance between points A and B of the circuit shown in Fig. 2.198.
[1.4 R
8. By first using a delta-star transformation on the mesh ABCD of the circuit shown in Fig. 2. 199. prove that
the current supplied by the battery is 90/83 A.
20
ww
30
www
5
www.
Fig. 2.195
R
Fig. 2.199
شلش
8V
23
(b)
N
B
ww
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