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Hi Shannon,
One last question:
Are PTC thermistors used for temperature measurement or reaction?Hi Boyd,
Happy to help, but I’d like to get a little more specific a question from you. Please do re-watch the video, and then let me know what you need more info on.
Hi Shannon,
This information is presented in the video presentation at the end of this unit. It’s a long presentation, which is why we encourage students to pause and make notes.
The other trick is, assuming you’ve watched it all the way through at least once, when you need to review (to study for the quiz, for example), you can move forward in the video a little bit at a time and look for the slide that discusses what you are trying to review, and then re-listen to that bit.
A few questions or assignments to help make sure you get this material.
1. Do you understand what we mean when we say that sensors either are used for measurement or reaction? What would be an example of each of those?
2. For RTD’s: scrub forward in the video until you see the slide on RTDs, and rewatch for a few minutes to review where they are used.
3. To understand PTC thermistors, rewatch that section (about 45 minutes into the presentation), then let me know what PTC thermistors are used for and why.
Or – if you still have lingering questions after watching those bits, let me know!
Hi Shannon,
We do want students who need a reset on a quiz to post a topic in the Forums, but not just to request the reset. We want you to post a topic about what you missed after two attempts, so we can help you figure it out.
Please post a topic in the Appliance Parts forum about the material that you had trouble with on the quiz, and we’ll be glad to work with you to make sure you understand it. Then we can reset the quiz for you.
Yep, voltage drives current.
Thank you as you can tell not much electronic experience yet.
That’s okay! That’s the case with a lot of our students. Just take your time and be sure to ask questions here in the Forum if you need additional info or clarification as you go along. We are more than happy to help.
OL means “over limit”. When you see that, it means that the resistance reading is higher than the upper limit of your meter, so for all intents and purposes is “infinite” resistance (open) as far as the circuit is concerned.
Make sense?
Thanks for asking – elementary questions are great!
Yes – total resistance in a series circuit is simply the sum of the resistances of the loads.
Hi Raymond,
No problem – just reset you. By the way, please use the Contact form (“contact” in main menu) if you need to ask for something like this again. It’s a little better way to request a reset.
Thanks!
SusanSure, just let me know. And by the way, you can shoot us an email with requests like this from the Contact page (in the main menu).
Hi Michael,
It’s good practice – this is what you’ll often face when looking at a manual for a job!
In this case, there is a table of contents a few pages in. I just opened it myself and used the TOC to find the section where I thought the technical info that you mentioned would be, skipped ahead to those pages, and found what you are looking for.
See if you can do the same!
Hi Kyle,
I’ve sent 2 emails to you with a follow-up question I needed answered before I could finish grading your midterm. Do you get the emails to the address that’s on your student account at MST? (info@adv…)
You got it!
Hi Shannon,
Sorry for the delay in replying, but it looks like you used that time to figure it out!
Yes, you would use that formula. As long as you use the correct current (remembering that the current is the same throughout a series circuit), you’ll get the correct answers.
There’s a way to check your answers, too:
When you add up the 3 voltage drops, what should you get?
Hi Leroy,
Our “Four Main Systems” approach is all about organizing our troubleshooting so that we’ll work smarter, not harder.
When both compartments are warm, it is possible that the sealed system has failed. Before breaking out the tool bag and doing measurements on anything, we would listen to see if both the compressor and the condenser fan are running. If yes, then measurements will need to commence, and the temperature control would be a reasonable one to check first.
Does that make sense? The reason we put the sealed system as the first one to check is that you can determine a lot about it just by listening, and let that determine your next steps.
Hi Ronney,
The module exam is a random selection of questions from the unit quizzes in the module, so it will be different each time.
The best time to get help on questions is when you miss them in the unit quizzes! That way you can just study those for the module exam.
Some of the questions above you also missed on your unit quizzes, some you had gotten correct. What you need to do to prepare for retaking the module exam is go back over each unit quiz. Make sure you understand the answers to the questions, and ask for help here on the ones you don’t.
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