Susan Brown

Forum Replies Created

Viewing 15 posts - 1 through 15 (of 1,996 total)
  • Author
    Posts
  • in reply to: Basic Electricity Unit 1 #27254
    Susan Brown
    Keymaster

      Voltage is a *relative* measurement. It is describing the difference in charge between two points. One of those points is often Neutral, which is at ground potential, which we designate as “0v”. It doesn’t really mean that there is no charge in the earth – we just call it Zero.

      So, saying “there is no absolute 120volts out there somewhere” is an accurate statement.

      Of the five statements we give you in this question, all are accurate except this one:
      “There is no absolute 10 amps out there somewhere”
      So that is the correct answer choice for this question.

      in reply to: Appliance Gas Pressure Discrepancy #27251
      Susan Brown
      Keymaster

        Unit 6 question 5: “The regulated pressure for natural gas appliances is”
        Correct answer: “5-7 inches wc”

        We mean coming from the meter.

        As Sam said in the other thread about this, The exact pressures will vary a bit from manufacturer to manufacturer. What we gave in the unit was some general specs. The important takeaway for you is just that natural gas is used at lower pressures than LP.

        in reply to: Appliance Gas Pressure Discrepancy #27248
        Susan Brown
        Keymaster

          Hi Alexander – please see this thread – does that answer the question for you?

          https://my.mastersamuraitech.com/appliance-repair-course-support/student-forums/topic/natural-gas-pressure/

          in reply to: I need a 3rd retake #27246
          Susan Brown
          Keymaster

            Hi Phillip – you did the right thing by submitting the reset request form. There can sometimes be a delay since one of us has to take care of it manually. You are all set now!

            in reply to: Module 8 unit 4 quiz #27242
            Susan Brown
            Keymaster

              Question: What characteristic of a heating element does NOT, by itself, make it an electrical load?

              Here are the possible answers:

              It is composed of high-resistance wire.
              It produces heat (ie., does work) when current flows through it.
              It has a voltage drop across it when current flows through it.

              Two of these are classic definitions of electrical loads. One is a characteristic that some loads have, but by itself does not make something an electrical load.

              We are asking you to identify which one of the three does not make something an electrical load.

              The first part of the explanation is, “Although it is true that a heating element is composed of high-resistance wire, this is not what makes it a load.”

              So the answer we are looking for is “It is composed of high-resistance wire.”

              Does that make it clear?

              • This reply was modified 1 week, 5 days ago by Susan Brown.
              in reply to: Q8 Midterm… #27239
              Susan Brown
              Keymaster

                Don’t think about the functioning of a gas dryer at this point – this is a circuit analysis. We’re practicing understanding voltage drop and shunts in a series-parallel configuration.

                (Also – there’s no element in a gas dryer. Just valve coils and an ignitor)

                120v for the Safety is correct. It is parallel to everything else and has direct access to L1 and N without going through another load.

                Do the “Zen Trick” that we taught in the first video in Unit 5. “Become” the ignitor – how do you reach N? And do the same for the Booster. Do you go through the closed switch, the Main coil, or both?

                That should help you understand the function of the closed detector switch.

                in reply to: reset test #27237
                Susan Brown
                Keymaster

                  Hi Carlos,
                  I can help you here, but if you need a reset in the future, please use the “Quiz & Exam Reset Request” form in the “Campus Support” menu. Thanks!

                  Q1 you have correct now.

                  Q5: the primary purpose of the breaker panel is to protect the various electrical circuits in the house should a short or overload condition occur.

                  Q6: at the panel, any 240v circuit will have two circuit breakers (since they are connected, they are often called a two-pole breaker).

                  Q8: In a circuit breaker panel, L1 and L2 are connected to the main breaker.

                  Hopefully these will all make sense as you review the unit. Let me know if you have any other questions.
                  I reset you.

                  Susan Brown
                  Keymaster

                    mi respuesta seria la 1.on the pinout for board. gracias.

                    That is correct. (Eso es correcto.)

                    in reply to: module 4 basic electricity unit 9 #27221
                    Susan Brown
                    Keymaster

                      Good question! Household batteries are low enough voltage that they can’t overcome the resistance of our skin to produce current that we can detect. One exception that I’ve heard of, but never tried myself, is if you use your tongue on a 9v battery – apparently it will create a little zap.

                      Other things to keep in mind: if we are soaking wet, then our conductivity increases. Also, DC is less dangerous to humans than AC.

                      in reply to: Question 1 on Dryer overview quiz #27209
                      Susan Brown
                      Keymaster

                        This is such a rare occurrence that, in our opinion, Kleinert should not have included it in the list. Overheat and humidity inside the dryer can, on rare occasion, cause increased drum roller noise. But this is not one of the leading indicators we would look for.

                        in reply to: Jon’s Questions #27207
                        Susan Brown
                        Keymaster

                          Faulty door latch is NOT one of the reasons

                          in reply to: Jon’s Questions #27201
                          Susan Brown
                          Keymaster

                            For Question 3, “Temperature sensor” is NOT one of the correct answers. The other 3 you chose are. (Thermostat, Pressure switch, Heating element)

                            The second question I think I didn’t select both of the options.

                            Correct – you only had selected one answer. There are two correct answers.

                            in reply to: Basic Electricity Unit 8 #27198
                            Susan Brown
                            Keymaster

                              Sorry, I didn’t mean which instrument you used. I meant where did you put the two probes?

                              in reply to: Basic Electricity Unit 8 #27196
                              Susan Brown
                              Keymaster

                                I had an element 24-oms, with 9.5a, and when I put my meter across the element it was 228v..
                                This was where i was a bit confused at the time, there was a difference of 7v between supply voltage 235v and the voltage across the load 228v.

                                There are a couple of things that could cause a small discrepancy in voltage like that. There could be a small resistance (loose connection or something) elsewhere in the circuit. You can also get a small “sag” in voltage (a small decrease in the supply) when a lot of current is flowing. How did you measure the 235v?

                                in reply to: Jon’s Questions #27192
                                Susan Brown
                                Keymaster

                                  1. A twisted door boot

                                  2. Broken drum support spider
                                  Failed support shock/shocks

                                  If those don’t make sense, let me know!

                                Viewing 15 posts - 1 through 15 (of 1,996 total)