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Do you know the rule of thumb for equivalent resistance of loads in parallel? That’s what you need in order to find the correct answer out of the choices we give you.
You are correct about the safety. It’s all by itself in a circuit, so will drop the entire source voltage. (No need to know its resistance, since you didn’t have to actually do a calculation.)
But, there are a couple of things we still need to straighten out.
First of all, the detector is a switch, not a load. (Is there any voltage drop across a closed switch?)
Second, remember that electrons don’t “see” any turns or bends in a wire. Unless there is a shunt, they will take any valid path. So, if the main coil were getting current, then it would be in series with both the igniter and the booster.
But – do the “Zen trick” on the booster. How do you reach out and touch Neutral?
Hi William,
Each load does have a resistance, but we don’t tell you what it is because you actually don’t need to know it in this particular scenario.
The first step is to decide if each load is in series with any other loads. The “Zen trick” on the booster, igniter, and safety is a helpful tool.
Then, if you have that determined correctly, you just use what you know in general about voltage drop and voltage supply to answer the question – no calculations necessary!
What do you think? How are the loads in relation to each other? Do they all have current flowing through them?
The reason I asked about the supply voltage is that the answer you gave – 40 vac and 80 vac – only adds up to 120vac. As we taught you, the sum of the voltage drops across loads in series will equal the source voltage.
But we indeed were asking you to calculate the voltage drop across R1 AND the voltage drop across R2.
And the correct answer is one of the choices given.
Hi Jim,
Thanks for posting a question!What is the source voltage for this circuit?
Hi Jim – when I look at your results for that quiz, there is no answer given for Question 8. It appears to have been left blank. If you’d like to retake the quiz so that you can answer all of the questions again, let me know. Otherwise, your score is fine for Certification.
You’re welcome!
Yes, there are only those two answers correct.
The “Protector” bimetal is not in the circuit with the “Hot Ind Lights”
Hi Samuel,
Here’s the problem statement: “You’re called in to troubleshoot a refrigerator for a warm temperature complaint. You use your IR temperature gun and measure the fresh food compartment at 37 degree F and the freezer temperature at 1 degrees F.”
The customer claims it is warm, but are those temperatures that you measure out of range?
The most common mistake folks make on this one is to look at the wrong indicator light on the schematic. There is one “surf ind light” and 4 “hot ind lights”. Which one are you looking at? Re-read the problem statement to make sure you are looking at the correct one.
HI Darron,
What is the power source for the light – L1-N, or L1-L2?
Hi Broc,
The most common mistake folks make on this one is to look at the wrong indicator light on the schematic. There is one “surf ind light” and 4 “hot ind lights”. Which one are you looking at?
Also, I can tell you that there are 2 correct answers, and your last attempt you chose 3 answers. One of the ones you chose is incorrect.
Lastly, did you read the explanation that shows up on the quiz results for that question?
Hi Joe,
Check out these two previous forum topics and see if they help you. Feel free to ask more questions after looking over these:
Hi Kevin,
Team Samurai just had a pow-wow about the 4 main systems and the condenser fan, and where it belongs. After all, even though the condenser fan is not physically in the sealed system, it supports the functioning of the sealed system.
We’re probably going to change the wording of this particular question, and tweak the description of the 4 main systems just to clarify. We’ll dial that in this afternoon and get back to you.
Okay – no problem. Thanks for letting us know!
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