A 2-wire d.c. distributor, 500 m long is fed at one of its ends. The cross-sectional area of each conductor is 3·4 cm2 and the resistivity of copper is 1·7 μΩcm. The distributor supplies 200 A at a distance of 300m from the feeding point and 100 A at the terminus. Calculate the voltage at the feeding end if the voltage at the terminus is to be 230 V.
A 2-wire d.c. distributor, 500 m long is fed at one of its ends. The cross-sectional area of each conductor is 3·4 cm2 and the resistivity of copper is 1·7 μΩcm. The distributor supplies 200 A at a distance of 300m from the feeding point and 100 A at the terminus. Calculate the voltage at the feeding end if the voltage at the terminus is to be 230 V.
Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter4: Transmission Line Parameters
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Problem 4.17P: Determine the GMR of each of the unconventional stranded conductors shown in Figure 4.30. All...
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A 2-wire d.c. distributor, 500 m long is fed at one of its ends. The cross-sectional area of each conductor is 3·4 cm2 and the resistivity of copper is 1·7 μΩcm. The distributor supplies 200 A at a distance of 300m from the feeding point and 100 A at the terminus. Calculate the voltage at the feeding end if the voltage at the terminus is to be 230 V.
![TUTORIAL PROBLEMS
1. What should be the minimum cross-sectional area of each conductor in a two-core cable 100 m long to
limit the total voltage drop to 4% of the declared voltage of 250V when the conductors cary 60A ? The
resistivity of the conductor is 2-845 µ2 cm.
2. A2-wire d.c. distributor, 500 m long is fed at one of its ends. The cross-sectional area of each conductor
is 3-4 cm and the resistivity of copper is 1-7 µ2cm. The distributor supplies 200 A at a distance of
300m from the feeding point and 100 A at the terminus. Calculate the voltage at the feeding end if the
voltage at the terminus is to be 230 V.
3. A 2-wire d.c. distributor AB 500 metres long is fed from point A and is loaded as under :
[0:34 cm³]
[241 V]
Distance from feeding point A (in metres)
100
300
400
500
40
Load (amperes)
If the specific resistance of copper is 1-7× 10m, what must be the cross-section of each wire in order
that the voltage drop in the distributor shall not exceed 10 volts ?
4. A 2-wire d.c. distributor is 250 m long. It is to be loaded as shown in Fig 13.10 at 50 m intervals. If the
maximum voltage drop is not to exceed 10V and the resistivity of core material is 0-7 x 2-54 µSN cm
determine the maximum cross-sectional area of each conductor.
20
40
50
[1-734 cm*]
[1-602 cm³]
Supply
End
120 A
90 A
60 A
50 A
80 A
Fig. 13.10](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fda5427b9-c766-4674-83eb-19df1e8662b3%2F15f843d3-0626-4e43-b26b-5dc0422055cb%2F9u5r3md_processed.png&w=3840&q=75)
Transcribed Image Text:TUTORIAL PROBLEMS
1. What should be the minimum cross-sectional area of each conductor in a two-core cable 100 m long to
limit the total voltage drop to 4% of the declared voltage of 250V when the conductors cary 60A ? The
resistivity of the conductor is 2-845 µ2 cm.
2. A2-wire d.c. distributor, 500 m long is fed at one of its ends. The cross-sectional area of each conductor
is 3-4 cm and the resistivity of copper is 1-7 µ2cm. The distributor supplies 200 A at a distance of
300m from the feeding point and 100 A at the terminus. Calculate the voltage at the feeding end if the
voltage at the terminus is to be 230 V.
3. A 2-wire d.c. distributor AB 500 metres long is fed from point A and is loaded as under :
[0:34 cm³]
[241 V]
Distance from feeding point A (in metres)
100
300
400
500
40
Load (amperes)
If the specific resistance of copper is 1-7× 10m, what must be the cross-section of each wire in order
that the voltage drop in the distributor shall not exceed 10 volts ?
4. A 2-wire d.c. distributor is 250 m long. It is to be loaded as shown in Fig 13.10 at 50 m intervals. If the
maximum voltage drop is not to exceed 10V and the resistivity of core material is 0-7 x 2-54 µSN cm
determine the maximum cross-sectional area of each conductor.
20
40
50
[1-734 cm*]
[1-602 cm³]
Supply
End
120 A
90 A
60 A
50 A
80 A
Fig. 13.10
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