Electric Circuits (10th Edition)
10th Edition
ISBN: 9780133760033
Author: James W. Nilsson, Susan Riedel
Publisher: PEARSON
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Chapter 11, Problem 49P
a)
To determine
Calculate reading of the wattmeter in watts.
b)
To determine
State how to connect a second wattmeter in the given circuit to measure the total power by two wattmeters.
c)
To determine
Calculate reading of the second wattmeter.
d)
To determine
Show that the sum of the two wattmeter readings equals the total average power delivered to the load.
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Assignment #2
A 110-V, three-phase, Y-connected, 8 pole, 48-slot, 6000-rpm,
double-layer wound, synchronous generator has 12 turns per coil.
If one side of the coil is in slot 1, the other side is in slot 6. There
are 4 parallel paths. When the generator delivers the rated load at
a line voltage of 110 V, the voltage regulation is 5%. What is the
flux per pole?
Draw two consecutive phasegroups of one of the phase windings
and connect them (a) in series and (b) in parallel showing the
Start (S) and Finish (F) of both connections. (A separate drawing
for each connection)
3-4 Transmissiva Live of 120km has
R= 0.2
~2/15
X= 0.8 -2/km
Y = 15H/6 5/km
The line is supplies a load of 45 kV, SOMW, 0.8 lead p.f
find sending voltage,
Sending Current
p.f. Sanding
Voltage Regulation
⑨Voltage
5
Ⓒ charching coming!
изу
usy π cct
ले
A (medium) single phase transmission line 100 km long has the following
constants :
Resistance/km = 0.25 Q;
Susceptance/km = 14 × 10° siemen ;
Reactance/km = 0.8
Receiving end line voltage = 66,000 V
Assuming that the total capacitance of the line is localised at the receiving end alone, determine
(i) the sending end current (ii) the sending end voltage (iii) regulation and (iv) supply power factor.
The line is delivering 15,000 kW at 0.8 power factor Lead Draw the phasor diagram to illustrate
your calculations.
Chapter 11 Solutions
Electric Circuits (10th Edition)
Ch. 11.3 - The voltage from A to N in a balanced three-phase...Ch. 11.3 - Prob. 2APCh. 11.4 - Prob. 4APCh. 11.4 - Prob. 5APCh. 11.4 - Prob. 6APCh. 11.4 - Prob. 7APCh. 11.5 - Prob. 8APCh. 11.5 - Prob. 9APCh. 11 - Prob. 1PCh. 11 - Prob. 3P
Ch. 11 - Prob. 4PCh. 11 - Repeat Problem 11.4 but assume that the...Ch. 11 - Prob. 6PCh. 11 - Find I0 in the circuit in Fig. P11.7.
Find...Ch. 11 - Find the rms value of Io in the unbalanced...Ch. 11 - The time-domain expressions for three...Ch. 11 - Prob. 10PCh. 11 - The magnitude of the line voltage at the terminals...Ch. 11 - A balanced Δ-connected load has an impedance of...Ch. 11 - A balanced, three-phase circuit is characterized...Ch. 11 - Prob. 15PCh. 11 - In a balanced three-phase system, the source is a...Ch. 11 - Prob. 17PCh. 11 - The impedance Z in the balanced three-phase...Ch. 11 - For the circuit shown in Fig. P11.20, find
the...Ch. 11 - A balanced three-phase Δ-connected source is shown...Ch. 11 - Prob. 22PCh. 11 - Fine the rms magnitude and the phase angle of ICA...Ch. 11 - Prob. 24PCh. 11 - Prob. 25PCh. 11 - The line-to-neutral voltage at the terminals of...Ch. 11 - Prob. 27PCh. 11 - Prob. 28PCh. 11 - Prob. 29PCh. 11 - Calculate the complex power in each phase of the...Ch. 11 - Prob. 31PCh. 11 - Prob. 32PCh. 11 - Prob. 33PCh. 11 - Prob. 34PCh. 11 - Prob. 35PCh. 11 - Three balanced three-phase loads are connected in...Ch. 11 - Prob. 37PCh. 11 - Prob. 38PCh. 11 - Prob. 40PCh. 11 - Prob. 41PCh. 11 - Prob. 42PCh. 11 - Prob. 43PCh. 11 - Prob. 44PCh. 11 - Prob. 45PCh. 11 - Prob. 46PCh. 11 - Prob. 47PCh. 11 - Prob. 48PCh. 11 - Prob. 49PCh. 11 - Prob. 50PCh. 11 - Prob. 51PCh. 11 - Find the reading of each wattmeter in the circuit...Ch. 11 - Prob. 53PCh. 11 - Prob. 54PCh. 11 - Prob. 55PCh. 11 - Prob. 56PCh. 11 - Prob. 57PCh. 11 - Prob. 58PCh. 11 - Prob. 59PCh. 11 - Assume in Problem 11.59 that when the load drops...
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