Homework Answers
b) when S is off
R = 100 + 50 = 150
I = V/R = 0.06 A
when S is on
R = 150/2 = 75
I = 0.12 A
c) Power, for S is OFF = VI = 0.54 W
Power, S on = 1.08 W
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eT. For renstors of 75 Ω, 50 Ω. & 100 Ω are connected as shown to...
Draw a circuit diagram for the circuit of (Figure 1). Figure 1 of 1A circuit is shown in the figure. A 9-volt batter...
Draw a circuit diagram for the circuit of (Figure 1).
Figure
1 of 1A circuit is shown in the figure. A 9-volt battery is
connected by wires to different resistors. The positive terminal of
the battery is connected to a 50-ohm resistor by one wire and to a
75-ohm resistor by another wire. A 50-ohm resistor is connected
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7) Two half-wave dipole antennas, each with an impedance of 75 Ω, are connected in parallel throu...
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Use a 50 V battery in series with a switch, connected to a 10 Ω resistor...
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Make predictions before you play the animation:
Before you close the switch, predict the voltage across the
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Solve by hand and simulate in any electrical circuit
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Solve by hand only.
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If a l V rms signal source with an internal resistance of 50 Ω is connected...
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Draw a circuit diagram for the circuit of (Figure 1).
Figure
1 of 1A circuit is shown in the figure. A 9-volt battery is
connected by wires to different resistors. The positive terminal of
the battery is connected to a 50-ohm resistor by one wire and to a
75-ohm resistor by another wire. A 50-ohm resistor is connected
directly to the 100-ohm resistor, which is connected directly to
the negative terminal of the battery. A 75-ohm resistor is
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7) Two half-wave dipole antennas, each with an impedance of 75 Ω, are connected in parallel through a pair of 0.5-A transmission lines, and the combination is connected to a feed 0.25-2 transmission line, as shown in the Figure. 75Ω (Antenna) (a) What is the impedance of the 0.25-2 feed transmission line such that Zin will be matched to a 5042 TL? (b) If the result of (a) is connected to a 50 Ω TL that is, in turn, connected...
Use a 50 V battery in series with a switch, connected to a 10 Ω
resistor R1 and a light bulb with resistance
R2 = 100 Ω in parallel. Use a current chart to monitor
the current through the bulb and a voltage chart to monitor the
voltage across the switch.
Make predictions before you play the animation:
Before you close the switch, predict the voltage across the
switch and the current through the bulb. Record your
prediction.
After you...
In the schematic shown below Zo = 75 Ω and ZL = 25 –
j15 Ω at the frequency of 3 GHz (which is also the frequency of the
Source signal). Using the Smith Chart, perform the following:
i. Calculate the normalized value of Load impedance
ZL’ and mark it on the Chart.
ii. Estimate the magnitude of the reflection coefficient at the
Load using the Chart.
iii. Sketch the Constant-circle corresponding to the point from
the above step |ΓL|and...
Consider the circuit shown in (Figure 1). Suppose that V, = 415 0°V (rms). 4 Ω ν j3ΩΙ 120 Ω + j90 Ω Source- Line - Load Find the average power dissipated in the line in the figure. Express your answer to three significant figures and include the appropriate units. t НА ? ? P= Value Units Find the capacitive reactance that, when connected in parallel, with the load will make the load look purely resistive. Express your answer to...
Solve by hand and simulate in any electrical circuit
simulator preferrably LTSpice
Solve by hand only.
Problem #4: Consider the circuit shown below. 6Ω /8 Ω 302 2700 V (rms) 40 2 Source-Line Load (a) Find the real power dissipated in the line. (b) Find the capacitive reactance that when connected in parallel with the load will pl make the load look purely resistive. (c) What is the equivalent impedance of the load in (b)? (d) Find the real power...
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