Recent content by Deathz

  1. Deathz

    Measuring Power output of DC generator

    How should I compute the efficiency? Is this correct? % = YgQh/Pout Where Pout = Voltage x current Y=density G=gravity h=head Q= flow rate Note: I don't need to have a high efficiency of the turbine. What I need is the efficiency of the generator itself. How do I calculate the electrical...
  2. Deathz

    Measuring Power output of DC generator

    Like for example, I will use a drill in order to control na Input RPM, how should I compute the power input?
  3. Deathz

    Measuring Power output of DC generator

    If I'm not using Archimedes as a reference, how can I determine the power input based on the input RPM?
  4. Deathz

    Measuring Power output of DC generator

    If I am going to compare the efficiency of the two? What should be the constant parameter sir? Is it okay if i will base on the flow rate?
  5. Deathz

    Measuring Power output of DC generator

    Okay, once the voltage decreases, the current also increases right? So it is important to have a constant RPM between different load?
  6. Deathz

    Measuring Power output of DC generator

    Do you have a link, a book or a tutorial on how to get the efficiency of a generator having a hydro prime mover?
  7. Deathz

    Measuring Power output of DC generator

    But if I will use a higher resistance load to get the voltage into half, the turbine will stop rotating.
  8. Deathz

    Measuring Power output of DC generator

    Can I use a resistor as a load?
  9. Deathz

    Measuring Power output of DC generator

    So far i have learned that in order To calculate the power input, I will use the P=mgh, right? I still don't know what load should I used with 4.7 volts opej circuit output
  10. Deathz

    Measuring Power output of DC generator

    The motor have 4 poles
  11. Deathz

    Measuring Power output of DC generator

    There is an air gap, the magnet have the same size with the orginal magnet since I bought a customize one.
  12. Deathz

    Measuring Power output of DC generator

    I think it's okay to have a low volts since I am just going to compare the two. The problem is I don't know how to correctly get the input and output power in order to compare them
  13. Deathz

    Measuring Power output of DC generator

    The LED of the flashlight gets busted when I manually rotate the turbine and the voltage reaches above 5V, which makes me think that I am using an incorrect load. Honestly, the maximum voltage when I use a drill is 14V+ for the modified version and 10V+ for the unmodified one. Unfortunately...
  14. Deathz

    Measuring Power output of DC generator

    When I had my Data gathering, I use a flashlight as a Load in order to get the current but the voltage output would only give as what I've said in the thread. That is why I'm asking the correct way of getting the power output by asking of the correct load to use or the correct computation of the...
  15. Deathz

    Measuring Power output of DC generator

    I tested it using a drill as a prime mover and the output current and voltage increased. My problem now is to answer the objectives of my thesis, which is to compare the efficiency of the two generators.
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