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The electricity is not producing hydrogen, it is seperating the hydrogen from the oxygen. Most people conveniently forget that water is 88.81% oxygen.

You should also explain to the students: do not expose flame or sparks to top of coffee container while it is making hydrogen gas. Even if main switch is shut off, some Hydrogen gas will still be floating out of the container for a while. A spark or flame will ignite it instantly.

No

Cool experiment! 🧪

And the motor could? Could? Could?!

He is hot down there.

Very well explained. Happy to see that the school maintains the integrity of teaching refridgerants like this. It is still one of the best ways to learn and easy to understand.

Thats my Grandpa! Love and miss you. Thanks for being a leader and teacher to me, our family, and all the students that were blessed to have you as a teacher. Appreciate you uploading the video.

Why speed must decrease when we have more windings in serie? The magnetic flux is directly proportional to the current and the winding also. After the high speed winding, why we dont just use normal resistor to cut down the current and reduce the speed??

Why do we see sometimes that start and run both winding resistance are same?

great explanation

I think first shaded sample winding is 4-1-3-5-2 not 2-5-4-1-4(4-1 is 2 ohm & 2-5 is 10 ohm) same with second sample.

Well son of a gun, now I know exactly how to test the windings in the blower motor. I recently had an A/C technician claim that my motor bearings were bad and that's why it was humming and not starting. As it turns out, he was correct that the motor needed to be replaced, but wrong as to determining what was wrong with the motor. The motor ended up having 20 ohms across the two brown capacitor leads which means that the start winding was shorted. So this all makes sense now. Thank you for the detailed explanation. The only question that was not answered or considered is the polarity of the capacitor? I noticed, these types of capacitors don't have any polarity markings. I assume it doesn't matter because of A/C voltage, but capacitors in general usually need to have the polarity right in DC applications which are the ones I'm most familiar with in amplifier circuits. Just wanted to throw that out there.

Thank you for taking the time to make this video

6:05 Current leads voltage in a capacitive load, not inductive. There are a couple of fundamental errors in the information being presented. It's ok to make mistakes but please correct them because it's misleading to everyone taking their time to try and learn.

great thanks

I don't know much about motors but would appreciate your advice... I would like to get a 1/4 hp motor for continuous use. I would be running this motor all day, everyday for long time. I'm making a rock tumbler & using it to tumble rocks. This will be running for weeks at a time 24 hour a day. I don't know if I need a single phase motor. Or if there are motors with built in fans within the motor to keep it cool? I heard Dayton or Marathon motors are good. Any advice Or input on this would be greatly appreciated! Thanks 😎

What an outstanding explanation.

Great series, I'm working through them one at a time. Gee, years ago I missed a fundamental concept. In an AC motor running at 60 Hz, base rate would be 3600 rpm less something for slip. Not knowing any better, intuitively I assumed more windings would give a higher torque motor, so less tendency to slip and a faster resting rpm. As you show here, not so! Presumably more windings means more impedance, so lower current draw, and lower power delivery. Lower power delivery leads to a weaker magnetic field and more slip.

Please make more like this! I'm super grateful for this video. Learned alot

It’s called current not intensity and it’s measured in amps🤦‍♂️

Terrible/useless video. You did not tell what happens in the rotor or how torque is developed. You had some scribble on the board and did not tell about that pic in the video.

22:10 is really annoying

It would appear at 3:59 that you said "the highest resistance will always be between common and start." I think you meant "run and start." Measuring between run and start will have the resistance of both the run and start windings.

cant hear u......

I did appreciate the cliffhanger ending

Thank you

Great info and well delivered. Great that you host a series building on each motor and explaining why each one has merits over the former. I have sat through lectures for weeks and not had this explained as well as you just laid it out. Kudos and thanks. Volume wasn't an issue for me, I just turned it up a bit.

Good explanation but the rotor turns away from the shaded pole not towards it.

Thanks for the video. I’m in my second semester for HVAC and we’re going over electric motors, schematics….symbols and how the motors start.

Are the shaded poles complete circles? I can't tell if mine is broken.

Excellent thank you

Good explanation, thanks!

Can't hear anything.

What happens on a CSIR motor if the starting components such as the current relay/start capacitor are changed out to a start device that has both a start and a run capacitor? Will the motor start and then the run? What does an added run capacitor in the circuit do to the inductive run?

Volume. Interesting about the resistance in the two windings. Thank you.

👍

Thanks. :)

Nice job Boyd! Great to see Mr Arterbury. He was the department head in 1981 when I graduated.

the mic volume is too low

We are taught that in a capacitive circuit (ICE) Current (I) in a Capacitive (c) circuit leads Voltage (E) the acronym is ICE and in an Inductive Circuit (ELI) Voltage (E) leads (L) Current (I) so ELI is the acronym. At around 6:30 in your video I see that you are saying the opposite. I guess I am wondering if what we are being taught is incorrect? I can reference the 10th Edition of Electricity for HVAC by Russell E SMITH that also supports those two acronyms.

Sound is slow

Thank you for the tutorial :)

Well explained thank you, please I have a psc with a 6 wire labeled as U,V,W,Z, A and B how do I connect it

Nice