ELECTRIC CIRCUITS-W/MASTERINGENGINEERING
11th Edition
ISBN: 9780134894300
Author: NILSSON
Publisher: PEARSON
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Question
Chapter 7, Problem 39P
a)
To determine
Derive equation
b)
To determine
Derive equation
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A single phase a.c. distributor AB has:
The distance from A to B is 500 m. The distance from A to C is 800 m.
The impedance of each section is (6+j 8) /km.
A
B
C
The voltage at the far end is maintained at 250 volt.
Find: sending voltage, sending current, supply power factor and
80 A
60 A
total voltage drop.
0.8 lag. P.f
0.6 lead. p.f
A 3-phase, 4-wire distributor supplies a balanced voltage of 400/230 V to a load consisting of 8 A at p.f. 0-7
lagging for R-phase, 10 A at p.f. 0-8 leading for Y phase and 12 A at unity p.f. for B phase. The resistance
of each line conductor is 0.4 2. The reactance of neutral is 0.2 2. Calculate the neutral current, the supply
voltage for R phase and draw the phasor diagram. The phase sequence is RYB.
The three line leads of a 400/230 V, 3-phase, 4-wire supply are designated as R, Y and B respectively.
The fourth wire or neutral wire is designated as N. The phase sequence is RYB. Compute the currents
in the four wire when the following loads are connected to this supply:
From R to N: 25 kW, unity power factor.
From Y to N: 20 kVA, 0-7 lag.
From B to N: 30 kVA, 0-6 lead.
Chapter 7 Solutions
ELECTRIC CIRCUITS-W/MASTERINGENGINEERING
Ch. 7.1 - The switch in the circuit shown has been closed...Ch. 7.1 - Prob. 2APCh. 7.2 - Prob. 3APCh. 7.2 - Prob. 4APCh. 7.3 - Prob. 5APCh. 7.3 - Prob. 6APCh. 7.4 - Prob. 7APCh. 7.4 - Prob. 8APCh. 7.5 - Prob. 9APCh. 7.5 - Prob. 10AP
Ch. 7.7 - There is no energy stored in the capacitor at the...Ch. 7.7 - Prob. 12APCh. 7 - Prob. 1PCh. 7 - In the circuit shown in Fig. P 7.2, the switch...Ch. 7 - Prob. 3PCh. 7 - The switch shown in Fig. P 7.4 has been open for a...Ch. 7 - Prob. 5PCh. 7 - For the circuit of Fig. P 7.5, what percentage of...Ch. 7 - Prob. 7PCh. 7 - In the circuit in Fig. P 7.8, the voltage and...Ch. 7 - Prob. 9PCh. 7 - Prob. 10PCh. 7 -
The switch in the circuit seen in Fig. P 7.11 has...Ch. 7 - In the circuit in Fig. P 7.11, let Ig represent...Ch. 7 - The two switches in the circuit seen in Fig. P...Ch. 7 - Prob. 14PCh. 7 - Prob. 15PCh. 7 - Prob. 16PCh. 7 - Prob. 17PCh. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - For the circuit seen in Fig. P 7.19, find
the...Ch. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - The switch in the circuit in Fig. P 7.25 is closed...Ch. 7 - In the circuit shown in Fig. P 7.26, both switches...Ch. 7 -
In the circuit in Fig. P 7.27 the voltage and...Ch. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - The switch in the circuit seen in Fig. P 7.30 has...Ch. 7 - In Problem 7.30 how many microjoules of energy are...Ch. 7 - Prob. 33PCh. 7 - Prob. 34PCh. 7 - Prob. 35PCh. 7 - Prob. 36PCh. 7 - Prob. 37PCh. 7 - The switch in the circuit shown in Fig. P 7.38 has...Ch. 7 - Prob. 39PCh. 7 - Prob. 40PCh. 7 - Prob. 41PCh. 7 - Prob. 42PCh. 7 - Prob. 43PCh. 7 - Prob. 44PCh. 7 - Prob. 45PCh. 7 - Prob. 46PCh. 7 - For the circuit in Fig. P 7.4, find (in...Ch. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - Prob. 52PCh. 7 - Prob. 53PCh. 7 - Prob. 54PCh. 7 - The switch in the circuit of Fig. P 7.55 has been...Ch. 7 - The switch in the circuit seen in Fig. P 7.56 has...Ch. 7 - Prob. 57PCh. 7 - Prob. 58PCh. 7 - Prob. 59PCh. 7 - The switch in the circuit shown in Fig. P 7.61 has...Ch. 7 - Prob. 62PCh. 7 - Prob. 63PCh. 7 - Prob. 64PCh. 7 - Prob. 65PCh. 7 - Prob. 66PCh. 7 - Prob. 67PCh. 7 - Prob. 68PCh. 7 - Prob. 69PCh. 7 - Prob. 70PCh. 7 - Prob. 71PCh. 7 - Prob. 72PCh. 7 - Prob. 73PCh. 7 - For the circuit in Fig. P 7.73, how many...Ch. 7 - Prob. 75PCh. 7 - Prob. 76PCh. 7 - Prob. 77PCh. 7 - Prob. 78PCh. 7 - Prob. 79PCh. 7 - Prob. 80PCh. 7 - Prob. 81PCh. 7 - Prob. 82PCh. 7 - Prob. 84PCh. 7 - Prob. 85PCh. 7 - Prob. 86PCh. 7 - Prob. 87PCh. 7 - Prob. 88PCh. 7 - Prob. 90PCh. 7 - Prob. 91PCh. 7 - Prob. 92PCh. 7 - Prob. 93PCh. 7 - Prob. 94PCh. 7 - Prob. 95PCh. 7 - Prob. 100PCh. 7 - Prob. 101PCh. 7 - Prob. 102PCh. 7 - Prob. 103PCh. 7 - Prob. 104PCh. 7 - Prob. 105PCh. 7 - Prob. 106PCh. 7 - Prob. 107P
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