Up handwriting A 3-wire DC distributor 400 m long is fed at both ends at235 volts between each outer and neutral. Two loads Pand Q are connected between the positive and neutral andtwo loads R and S are connected between the negativeouter and the neutral. The loads and their distances fromone end (M) of the distributor are as follows: Load P, 51 A,100 m from M; Load Q, 74 A, 300 m from M; Load R, 60 A,150 m from M; Load S, 64 A, 350 m from M. Determine thep.d at each load point and the current at each feedingpoint. The resistance of each outer is 0.25 0 per 1000 mand that of the neutral is 0.5 Q per 1000 m.

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Answered: A 3-wire DC distributor 400 m long is…

A 3-wire DC distributor 400 m long is fed at both ends at 235 volts between each outer and neutral. Two loads P and Q are connected between the positive and neutral and

EBK ELECTRICAL WIRING RESIDENTIAL

19th Edition

ISBN:9781337516549

Author:Simmons

Publisher:Simmons

Chapter29: Service-entrance Calculations

Section: Chapter Questions

Problem 3R: a. What is the ampere rating of the circuits that are provided for the small-appliance loads? _____...

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DC Generator

An electromechanical machine which converts input mechanical energy to respective output electric energy is called a generator.

Question

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A 3-wire DC distributor 400 m long is fed at both ends at
235 volts between each outer and neutral. Two loads P
and Q are connected between the positive and neutral and
two loads R and S are connected between the negative
outer and the neutral. The loads and their distances from
one end (M) of the distributor are as follows: Load P, 51 A,
100 m from M; Load Q, 74 A, 300 m from M; Load R, 60 A,
150 m from M; Load S, 64 A, 350 m from M. Determine the
p.d at each load point and the current at each feeding
point. The resistance of each outer is 0.25 0 per 1000 m
and that of the neutral is 0.5 Q per 1000 m.

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Step 1: Given

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Step 2: Calculations to find the voltage drop along the 3-wire DC distrubutor

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Step 3: Calculations to find the potential difference at each load point

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Step 4: Calculations to find the current at each feeding point

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