Questions tagged [homework]

Use this tag if the question you are asking is an assignment or homework with which you require assistance. EE.SE is not a homework answering service, so make sure you show what you have attempted so far and are specific as to where you have gotten stuck.

476 questions
Filter by
Sorted by
Tagged with
132 views

77 views

...
46 views

Resonant frequency of RLC circuit if for two values of omega we have same max amplitude current

Original question: An alternating current is flowing through a series LCR circuit. It is found that the current reaches a value of 1 mA at both 200 Hz and 800 Hz frequency. What is the Resonance ...
• 123
1 vote
53 views

Control system transfer function

I tried to find the transfer function F(s) = C(s)/R(s) through block manipulation and through Mason's Formula but the results are not matching. Where is the mistake?
54 views

Computing voltages over resistors [closed]

How do you use the combine/redraw method to find the voltages of the different resistors?
26 views

Solenoid magnetic induction graph

I need help solving this problem, if anyone had a similar problem it would help me a lot. A table is given with the current flowing through the solenoid,also values ​​for the magnetic induction vector ...
1 vote
58 views

Loaded transformer. Unclear origin of formula

From a homework task. Given: nominal input $$U_{1N}$$ and nominal current output $$I_{2N}$$ Also given: output voltage without load $$U_{20}$$ and short circuit voltage $$U_{KN}$$ As for nominal ...
• 3,523
121 views

How to find nature of RLC circuit?

If a resistance value, XL value and XC value are given, how do we determine the nature of the circuit (whether it's capacitive, resistive or inductive)? The only thing that comes to my mind looking at ...
• 65
147 views

Analysis of a comparator circuit

I am struggling to analyze this (admittedly homework) Op-Amp circuit. Voltage divider approach Now if we treat the input into the negative terminal as a voltage divider we get  V_- = 10V* \frac{5}{...
• 133
1 vote
90 views

Solving the open circuit voltage and voltages not summing up to zero

I tried solving this circuit using mesh analysis. I actually do not understand on how I can find the voltage in the open part. Moreover, the voltages of resistors in some loops are not summing up to ...
• 29
393 views

How to find current through the 5 Ω resistor using Thevenin's theorem?

I tried to take the 5 Ω resistor as Rl but still couldn't find the answers as given in the green highlight. I'm pretty new at this and can only manage solving straightforward circuits. I managed to ...
• 11
1 vote
64 views

Nyquist's theorem misunderstanding

I have been assigned the following question: From what I understood of Nyquist's theorem for a signal that contains power over a range of frequencies that does not include 0 Hz i.e. over a known ...
• 13
264 views

AC circuit analysis homework, finding voltages and currents

I've been trying this question for a while. I'm not sure where to start. I tried redrawing the circuit differently but that did not help much. Please ignore the fact that my drawing is not neat, it ...
• 117
588 views

Circuit analysis homework - LTspice results are different from calculations

Original question: I have already tried calculating it, but after simulating the circuit in LTspice, the answer is different. My working is shown below. I've included a screenshot of the LTspice ...
• 117