A 300 m ring distributor has loads as shown in Fig. 13.45 where distances are in metres. The resis- tance of each conductor is 0-2 W per 1000 metres and the loads are tapped off at points B, C and D as shown. If the distributor is fed at A at 240 V, find voltages at B, C and D. 1. IV - 236-9 V ; V- 235-97 V ; V, - 237-45 V|| 240 V 30 A 10 A E (D 70 50 A A 60 D 100 A B 230 V 20 A 80 90 B 70 A 10 A Fig. 13.45 Fig. 13.46
A 300 m ring distributor has loads as shown in Fig. 13.45 where distances are in metres. The resis- tance of each conductor is 0-2 W per 1000 metres and the loads are tapped off at points B, C and D as shown. If the distributor is fed at A at 240 V, find voltages at B, C and D. 1. IV - 236-9 V ; V- 235-97 V ; V, - 237-45 V|| 240 V 30 A 10 A E (D 70 50 A A 60 D 100 A B 230 V 20 A 80 90 B 70 A 10 A Fig. 13.45 Fig. 13.46
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![TUTORIAL PROBLEMS
1.
A 300 m ring distributor has loads as shown in Fig. 13.45 where distances are
tance of each conductor is 0-2 W per 1000 metres and the loads are tapped off at points B, C and D as
metres. The resis-
shown. If the distributor is fed at A at 240 V, find voltages at B, C and D.
IV - 236-9 V ; V- 235-97 V ; V, - 237-45 V|
240 V
30 A
10 A
E
70
D
50 A
A
60
D
100 A
230 V
+ 20 A
A
80
90
70 A
10 A
Fig, 13.45
Fig. 13.46
A d.c. 2-wire ring main ABCDEA is fed
from 230 V supply as shown in Fig. 13.46.
The resistance of each section (go and re-
turn) AB, BC, CD, DE and EA is 0-1 W.
The loads are tapped off as shown. Find
the voltage at each load point.
|V½ = 227 V ; Vc-225 V ; V,- 225 V;
VE = 226 V]
In the d.c. network shown in
Fig.13.47, A is the feeding point and
is maintained at 250 V. The resistances
2.
B.
12 A
0.4 2
36 A
A
0.8 2
16 A
0.4 2
3.
8A
D
Fig. 13.47
of the various branches (go and return) are indicated in the figure. Determine the current in each
branch.
JAB - 144A ; BC = 2A ; DC - 5A ; AD - 13A||
0.8 2
0.4 2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fda5427b9-c766-4674-83eb-19df1e8662b3%2Ff3e6360a-698d-49e6-8034-4be55975f0d2%2Fp4oilpi_processed.png&w=3840&q=75)
Transcribed Image Text:TUTORIAL PROBLEMS
1.
A 300 m ring distributor has loads as shown in Fig. 13.45 where distances are
tance of each conductor is 0-2 W per 1000 metres and the loads are tapped off at points B, C and D as
metres. The resis-
shown. If the distributor is fed at A at 240 V, find voltages at B, C and D.
IV - 236-9 V ; V- 235-97 V ; V, - 237-45 V|
240 V
30 A
10 A
E
70
D
50 A
A
60
D
100 A
230 V
+ 20 A
A
80
90
70 A
10 A
Fig, 13.45
Fig. 13.46
A d.c. 2-wire ring main ABCDEA is fed
from 230 V supply as shown in Fig. 13.46.
The resistance of each section (go and re-
turn) AB, BC, CD, DE and EA is 0-1 W.
The loads are tapped off as shown. Find
the voltage at each load point.
|V½ = 227 V ; Vc-225 V ; V,- 225 V;
VE = 226 V]
In the d.c. network shown in
Fig.13.47, A is the feeding point and
is maintained at 250 V. The resistances
2.
B.
12 A
0.4 2
36 A
A
0.8 2
16 A
0.4 2
3.
8A
D
Fig. 13.47
of the various branches (go and return) are indicated in the figure. Determine the current in each
branch.
JAB - 144A ; BC = 2A ; DC - 5A ; AD - 13A||
0.8 2
0.4 2
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