Recent content by Special One

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    Engineering Measuring rotational speed for Tachometer vs Oscilloscope

    The answer is because it puts out 2 pulses for every rotation. So, in order fix this problem we should change the gain in oscilloscope from +60.000,000 to +30.000,000 Now we will be getting the exact value as it is in the tachometer.
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    Engineering Measuring rotational speed for Tachometer vs Oscilloscope

    Question: Why does the oscilloscope double almost the exact value of rotational speed measured by Tachometer? Rotational speed from Tachometer = 1930 [RPM] Frequency of 1 period = 64.3 [Hz] which means 3857.91 [RPM] The output waveform of hall-effect sensor is attached. Can you have any...
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    Checking Kirchhoff's current law

    Im trying to apply KCL to the serial c and parallel rl circuit. IZ = = = 330.562 mA but this means incorrect proof. Anyone can help please?
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    Engineering Find Current Through 40 Ohms Resistor Using Thevenin

    @scottdave @gneill What next? How can I find Vth?
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    Engineering Find Current Through 40 Ohms Resistor Using Thevenin

    I would prefer not to share it here because the correct answer doesn't match with my solution. Let's say you solving the problem, Can you tell what you're going to do to solve for Vth?
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    Engineering Find Current Through 40 Ohms Resistor Using Thevenin

    Nodal method
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    Engineering Find Current Through 40 Ohms Resistor Using Thevenin

    Find the current through the 40ohms resistor using the Thevenin? I have calculated the Zth = 10 ohms. And I couldn't find the Vth.
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    Please check my solution (pulling a dog in a toy wagon)

    Question sheet is attached answer of 1st question: Answer of 2nd question:
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    [AC Circuit] How do we convert from the time domain to the phasor domain?

    it means i. Imaginary part
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    [AC Circuit] How do we convert from the time domain to the phasor domain?

    In this example, We need to covert e2 & e5 to a form with imaginary number . we will obtain e2=j10 & e5=20 Can anyone explain how we got this?
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    { help } Calculating the B-field at the center of a solenoid

    Problem 52: A solenoid is 40 cm long, has a diameter of 3.0 cm, and is wound with 500 turns. If the current through the windings is 4.0 A, what is the magnetic field at a point on the axis of the solenoid that is (a) at the center of the solenoid, (b) 10.0 cm from one end of the solenoid, and...
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    Coulomb's Law problem: Force of attraction between the two singly charged ions

    Lol, of course I just want you to check if I made any mistakes. I have found different answers on the internet of the same problem.
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    Coulomb's Law problem: Force of attraction between the two singly charged ions

    In a salt crystal, the distance between adjacent sodium and chloride ions is 2.82×10^−10m. What is the force of attraction between the two singly charged ions?
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    Thevenin's Theorem -- Using transformations to find the equivalent resistance

    but I'm stuck with Vth. Do you have any idea?
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    Thevenin's Theorem -- Using transformations to find the equivalent resistance

    guys, I came up with this answer I don't know if it's correct or not. Tell me your opinions!