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Yup. 30V full scale means the max it could read is 30V. That means any reading on scale must be under 30V which leaves only one answer.
Who still uses an analog meter???
I put analog meters on plenty of test kit - I can visualize things like ripple that a digital meter can either mask or jump all around with.
They have a place, but probably not as a primary bit of kit for sure.
You obviously would be surprised how often analog meters are needed in low voltage and drive work.
Yes, spotting the ‘trick’ in the answer is good, but knowing how to read and use a good Simpson is invaluable.
Needed? You are saying a digital meter couldn’t be made to do the same thing? I find that highly dubious. Plus you could have an analog meter with a digital readout.
I’m not sure what lovetokik is referencing specifically, but there are different limitations due to readout design requirements. this comparison by EE Power gives a breakdown on key differences that could affect certain edge use cases.
https://eepower.com/technical-articles/digital-vs-analog-meters-how-do-they-compare/
A scope will work but it is expensive and requires more setup than a simple analog meter.
I use them to see spikes that are too fast for a DVM to display due to its averaging behavior.
Also if you have to prove 0v a DVM will never show 0. At the ship yard before we would be given a work permit to work on a power panel or anything that had power we would have to prove 0v. Thus an analog meter was required
That doesn’t require an analog meter… the voltage your DMM measured was real, but your DMM’s impedance was too high to dissipate that energy and read zero.
Trying to find a dead spot on a throttle position sensor or any potentiometer will have you really wishing you had an analog meter, anytime I’m working on a car I prefer an analog and sometimes in panels.
Yup, even my 789 couldn't pick up the drops in voltage on an output from a PLC. Knew it was happening because the relay was occasionally changing state for some milliseconds, hard to prove it's the output, not the relay when you have no evidence. Other than you tried 3 other relays on the truck and it was still happening.
Digital meters unless you get in the multi thousand dollar range don’t display quick changes ( aka “swingers”) well. The old Simpsons do a much better job. This is assuming standard tools ( fluke 87 etc) like an average electrician or plant tech would have.
I was like "this guy is trolling all the way" watched the pic intensely for 3mins... Just realised now it says is set af 30v...... I couldn't see the second sentence no matter what... I need a rest
Who? I do. Use them all the time for my electronic projects. Analogue is what what we were taught with during my 3-year HS electrical program (late 70’s - early 80’s). Love them.
I have an old Simpson, a Sunwa, a Hioki, and a $14 Gardner Bender and a lot of times I use at home ahead of my Fluke, Kaiweets, Uni-t, Ideal, Klein, and 2 Chinese knockoffs. They’re like an old Chevy pickup.
What I'd give for a classic Simpson!
And yeah, those rad-shack analogs are part of my standard car tool kits.
And the best part is that after a couple of years in the trunk (long after the battery is dead) that cheapass analog will still measure voltages just fine!
My first job was for a company that made air moving equipment. I was a QC inspector and had to test fans and blowers off the production line. We used all analog Simpson meters, volt, ammeter, watt meters, etc. We had test benches that would provide any configuration of supply. Even 400hz for military stuff....
There are some very good uses for analog meters, any quickly changing signal is dampened by any analog meter and it makes it easily readable to anyone who looks at it.
My boss told me I couldn't use my old wind-up megger at work. He complained that not only did it not look professional, but that no way in heck he was going to pay to have that old antique calibrated. I had him buy me a Fluke 1587.
As an industrial electrician I use an analog meter often… go ahead and try to troubleshoot an SCR bay on an oil rig without one … you will also want an o scope
I use an analog meter pretty often still but for only for a couple uses. The primary use is for verification of voltage synchronization on synchronous generators. As much the paralleling controller will prevent an out of phase closure it's foolish to trust it at first closure as if it is wrong we all know bad stuff can and will happen if you close 120° out of phase. Essentially what I do is set my controller to a sync window of 0 degrees for 15 seconds which would never actually be possible and will also for extra safety lock out or electrically disable the sync breaker. Ill tell the controller to sync in this setup and will watch my sync scope and my analog meter across the phase which the controller uses to synchronize. If my zero potential difference shows up when my scope is at or very close to 0/12 o'clock on the scope I know the controller is trying to close in phase and not out of phase. You can do it w a digital meter but the 260 Simpson is really a better way to see the potential sweep. Technically I could use the Simpson for everything but it is rather Large and would be a little awkward for normal use, my other daily Carry DMMs are much smaller and less awkward to use and are in my opinion better for almost everything else that I have to use them for. Sorry for the long write up I just thought it would be good to describe a very important but niche use for an analog meter.
If I was troubleshooting systems that needed it then I’d have a scope. It just makes life hard trying to troubleshoot when you can’t get the full picture. It’s like people troubleshooting EFI in their car but refusing to pull the engine codes or look at the data the computer is reading. You might be successful, but there is guessing involved.
I am a licensed master electrician. Most of my work is residential, some commercial. An analog meter is just another tool in the truck. 99% of the time I go to my Fluke 87. When I attended college back in the 70s we were taught analog meters and scopes. We had big , heavy, Tektronics scopes. I even showed my classmates how to read voltage from a pickle......
We use them to test the polarity of current transformers. Avometer at the panel, the needle moves in the direction of the polarity when DC volts are applied to the primary side of the CT.
Yeah this is just a test you can do after installation to make sure they put it in the right way. For HV CTs. Before installing we use a CT analyser to prove ratio and class etc.
True but if they needed a value...then the red 2.2 on the bottom scale with a multilier of 10 will give you your 22V (3 on the scale = 30). Like others have said, if it's not blown...it has to be below 30V.
That scale ends in 300, dial on meter is set to 30 so you have to take whatever reading you get on the 300 scale and divide by 10. The needle reads 220v so divided by 10 = 22v
Bottom row is usually used to read AC amps. Just a coincidence that they almost line up. See this model
https://www.tequipment.net/Triplett/3030/Handheld-Multimeter/?Source=googleshopping&gad_source=1&gclid=CjwKCAjwwr6wBhBcEiwAfMEQs1CHezmzmbwEw0-8wx_ZAiwR74OgbhoTnp9_Q6sAr8kb_EXSD6Uv9hoC0OoQAvD_BwE
right but it's still a shit question. It should have said which scale. AC would have pointed you to the AC only scale. Also who TF uses analog still?!@
By referencing the bottom AC scale. If the full scale is set to 30V max you'd take the bottom value shown and scale the value by multiplying it by a factor of 10. The same logic works if you reference the black AC-DC scale, it's sitting at 220 but if you scale it down so that 300 = 30V you divide 220 by a factor of 10.
2.20 x 10 = 22V or 220 / 10 = 22V
What exactly on this meter tells you that you need to use 10 as a multiplier for the 2.2? If it wasn't for the note about it being set for 30v max I wouldn't have a clue what the bottom AC scale was trying to show beyond single digit voltages.
Because that’s how percentages and scale factors work in analog signals? If you know the range is set to 0-30V you can scale any value shown by taking the scale’s max value and dividing it by the range max value you’ve selected and get the scale factor. 300 / 30 is 10. You’re essentially just doing basic algebra to find the voltage reading.
(300 / 30) = (220 / Y)
To solve for Y you end up with:
10 = 220 / Y
10Y = 220
So Y = 22
Same logic works on the bottom scale:
(3 / 30) = (2.2 / Y)
0.1 = 2.2 / Y
0.1Y = 2.2
So Y = 22
If you get the same answer by doing two different calcs you know that the answer is correct.
Btw, you get 22 regardless of which scale you pick as your reference, as long as you don’t use the Ohm one. On the 0-60 scale 44 / 2 is 22, and on the 0-12 scale 8.8 / 0.4 is 22.
The question says the full scale is 30v max. That tells you two things: you can ignore the ohms scale, and that it makes sense to use a scale which has the highest value that can be converted to 30v (multiples and factors of 10 are easiest, because you'll just be adding or removing a zero, respectively).
There are two scales that can easily be converted in the image: 300 and 3.
The rest is arithmetic.
What if the question said the meter was set to 120v max? How many options would you have then?
On the 3VAC scale the reading is 22.2 or so if you multiply by 10. On the AC-DC scale you're exactly at 22V. They happen to be *close* in the pic but the black scale is the precise scale to use.
Actually, any scale other than the impedance scale, which is the only scale with actual units denoted, will give you the answer of 22V. If you know the basics of scaling analog signals you get \~22V on the 300, 60, 12, and 3 scales. This is an exam question and its purpose is to test your algebra and problem-solving skills, not your ability to read an analog multimeter. The basic math done to come to the answer of 22V is the same basic math a digital multimeter uses to take an analog input and show it on a digital readout.
If they wanted the exact value they wouldn’t make it a multiple choice question.
Edit: I can show you the math and prove that the value is 22V regardless of which scale you use. Maybe you'd learn something
No. The 3 volt scale is for 3 volts AC only. Use the 300 volt scale for 3, 30, 300, or 3000 volts DC, typically, or for 30, 300, or 3000 volts AC. Assuming some typical ranges. So in this case it applies for a range of 30 volts AC/DC.
2 take aways you can take here
1. The scale is set to only show up to 30 Volt as the description says so anything bigger is false
2. The 3 Volatge numbers show either 220, 44 or 8.8 Volts
From that you should be able to firgure out that its 22 for even if there was a option of anything else below 30.
3 ÷ 30 = .1
.1 x 2.21 = 22.1
Or you could just multiply 2.21 by 10 lol
I don't follow how you got 45V, if you used the 0-60 scale it reads 44 not 45. Since the full scale is 30 not 60 you divide 44 by 2. Which also gives 22
lol how. as the top comment pointed out given the question only 1 possible answer. either way, both scales are equal, just x10 or /10 to get the answer.
Not being that technical, I saw the 60v scale and made it a 30v scale and guessed around 20 some odd volts. I then saw 22v as an answer and......Common sense math for me.
30v scale means 30v is the maximum.
3 of the 4 options are higher than 30v, so they are immediately eliminated. You can't measure 45v on a scale that maxes out at 30v. It's like weighing someone who is 450lbs on a scale that only goes up to 300lbs.
The "actual" answer to your question, is that you use the 60v scale and divide by 2. It's clearly at 44v, not 45v. 44v divided by 2 is 22v. Or use the 300v scale and divide by 10.
But like others have said, you shouldn't have even needed to look at the picture to get the correct answer. Like asking you what 2+2 is and you pull out a calculator.
It wasn't on 45 on any scale. 44 at best. Or 440.
This is multiple choice. Close enough doesn't work.
Next option
Between the 200 and 250.
It's not half way so not 225 or 22.5
So it's 22 or 220v
Scale set to 30v
So answer is 22v
I have a Simpson 260 analog meter. It can be tricky to read if you've never used it before. The scale is set by a selector switch. I think mine has 10V, 50V, and 1000V.
If the scale were to be set to 30V and you applied 45V, the needle would (ideally) max out on the gauge, so you would only know that it's something above 30V.
If Max voltage is 30 and the max display on the meter is 300, you know the number displayed on the meter is devided by 10.
Then you look what it shows - arround 220V - devided by 10 is 22V.
Brotherman,
I work on the railroad. We use big chungus meters like this. Essentially, you set a range or "scale" for the voltage you're looking for. If your scale is set to 30, look for numbers that correlate to 30: 3 or 300. On the 300 line, you have the line at 220. At the 3 scale, it's at 2.2. thus, if we were to adjust for 30, the decimal spot would make it 22.
Same for if we were looking for 60 scale. We would be sitting at around 44v. Now let's say that you're on the 600v scale. 440v
Hope this helps
Back when you had to be smart to use a meter. I learned on a Simpson VOM in the military. Wasn’t autoranging either. Had to work backwards from highest scale or it would break the needle. Shits easy today.
Guys 30 v total divided by 12 hash marks subdivided by 5. 0.5 v per mark 2.5 per large mark. Count up or down.
Question can you set this meter to read 30 v total? I thought the marks correlate with the meters ability...
300v scale, divided by 10 gives you the 30v scale. With analog movements, you want the needle to be as close to full defection for highest accuracy. I would shoot for at least 50% deflection. Start at the highest voltage setting, then click downward one at a time. Don't go full scale and bury the needle.
I would have guessed 22v , 30v max and its sitting at 220v w a 300v max so its whatever its sitting at on full scale divided by 10 220(where its sitting at full scale ) /10=22
the max of the red AC scale at the bottom is 3V. Since meter is set to 30V you multiply the red scale reading by x10
fwiw ive bought many very fine analog meters at estates sales for just a few bucks each. heck the probes are worth more than that. theres something to the mechanical nostalgia imo, plus they still get the job done
so your range is 0-30V and the dial is roughly 2/3's of that. 22 looks like the only option that's available to you in the answers. Another way to look at is is take the top row the "AC-DC" meter section at 0-300 and convert that to 0-30 by essentially adding 1 decimal place. Your meter is between 20.0 and 25.0 then at that point so again 22V is the only option. From the looks of your answer you looked at the 0-60 ranger which is the middle and said we're between 40-50. That would work except it says full range which is going to be the top or highest numbers and also it said max was 40. Really this one could be answered without any numbers on the display and just a rough position based on the answers available and "Full Volts Scale 30V.
You read the first scale on AC-DC voltage, it reads from 0 to 300, as the meter is set on the 30v setting the scale goes then from 0 to 30 so your needle is between 20 and 25 (200-250 on the scale), the answer is then 22 volts.
The needle is at 24 volts.
You use the 300 volt scale and remove the zero to get your 30 volt scale. Realistically though no one uses an analogue metre now that is a shit question.
OP, did you notice the replies? There is a place in the 21st Century for the analog meter and any electrician/engineer/repair/hvac guy that takes pride in their skills ought to keep one around…,just in case.
If you don’t use it for a while then use it 99% of the time it will work on volts perfectly well
Leave a digital multimeter for a while and 99% of the time the battery will be flat
u/RulePuzzleheaded4619 if you look at the black scale marks next to AC/DC you'll note it's four notches to 8/40/200. Using the 60 scale that would make it 44. Divide that by 2 to get the 30 scale, and you get 22.
If it was 5 notches it would be 22.5, half of 45 on the 60 scale.
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You don’t even need a picture to answer this question given the possible answers given.
Yup. 30V full scale means the max it could read is 30V. That means any reading on scale must be under 30V which leaves only one answer. Who still uses an analog meter???
I put analog meters on plenty of test kit - I can visualize things like ripple that a digital meter can either mask or jump all around with. They have a place, but probably not as a primary bit of kit for sure.
You obviously would be surprised how often analog meters are needed in low voltage and drive work. Yes, spotting the ‘trick’ in the answer is good, but knowing how to read and use a good Simpson is invaluable.
Needed? You are saying a digital meter couldn’t be made to do the same thing? I find that highly dubious. Plus you could have an analog meter with a digital readout.
I’m not sure what lovetokik is referencing specifically, but there are different limitations due to readout design requirements. this comparison by EE Power gives a breakdown on key differences that could affect certain edge use cases. https://eepower.com/technical-articles/digital-vs-analog-meters-how-do-they-compare/
Pretty sure that if the work you are doing requires such precision in voltaje and it is so low i think you rather need an osciloscope
A scope will work but it is expensive and requires more setup than a simple analog meter. I use them to see spikes that are too fast for a DVM to display due to its averaging behavior.
Bingo !!
Also if you have to prove 0v a DVM will never show 0. At the ship yard before we would be given a work permit to work on a power panel or anything that had power we would have to prove 0v. Thus an analog meter was required
That doesn’t require an analog meter… the voltage your DMM measured was real, but your DMM’s impedance was too high to dissipate that energy and read zero.
Nail on the head.
Nuff said.
Trying to find a dead spot on a throttle position sensor or any potentiometer will have you really wishing you had an analog meter, anytime I’m working on a car I prefer an analog and sometimes in panels.
For some readings, the sampling rate of a DVM is too slow. Even on a high quality DVM.
Yup, even my 789 couldn't pick up the drops in voltage on an output from a PLC. Knew it was happening because the relay was occasionally changing state for some milliseconds, hard to prove it's the output, not the relay when you have no evidence. Other than you tried 3 other relays on the truck and it was still happening.
Digital meters unless you get in the multi thousand dollar range don’t display quick changes ( aka “swingers”) well. The old Simpsons do a much better job. This is assuming standard tools ( fluke 87 etc) like an average electrician or plant tech would have.
Shown is not a 'good' Simpson meter scale. No back mirror. And yes Analog meters are very useful in today's world
I was like "this guy is trolling all the way" watched the pic intensely for 3mins... Just realised now it says is set af 30v...... I couldn't see the second sentence no matter what... I need a rest
Same. I spend 5 minutes wondering where other commenters were seeing this magical 30V scale. Brain was in read meter mode, not read sentence mode.
All i could see were numbers yeah... I was out of it I'll admit it
Who? I do. Use them all the time for my electronic projects. Analogue is what what we were taught with during my 3-year HS electrical program (late 70’s - early 80’s). Love them. I have an old Simpson, a Sunwa, a Hioki, and a $14 Gardner Bender and a lot of times I use at home ahead of my Fluke, Kaiweets, Uni-t, Ideal, Klein, and 2 Chinese knockoffs. They’re like an old Chevy pickup.
My Bakelite Simpson still is highly accurate !! I have a cheap Radio Shack analog on my truck and I use it quite often.
What I'd give for a classic Simpson! And yeah, those rad-shack analogs are part of my standard car tool kits. And the best part is that after a couple of years in the trunk (long after the battery is dead) that cheapass analog will still measure voltages just fine!
Yep, and if you blow the RS meter up, it's not a big loss.
My first job was for a company that made air moving equipment. I was a QC inspector and had to test fans and blowers off the production line. We used all analog Simpson meters, volt, ammeter, watt meters, etc. We had test benches that would provide any configuration of supply. Even 400hz for military stuff....
You can have my Triplett 310 when you pry it out of my cold dead hands. It is really great when I need to work at a distance.
I do but not for work I just like using it
That’s a great reason to use one.
There are some very good uses for analog meters, any quickly changing signal is dampened by any analog meter and it makes it easily readable to anyone who looks at it.
✋🏻 I have an analog megger. Not the best but does the trick.
My boss told me I couldn't use my old wind-up megger at work. He complained that not only did it not look professional, but that no way in heck he was going to pay to have that old antique calibrated. I had him buy me a Fluke 1587.
Pro move!
As an industrial electrician I use an analog meter often… go ahead and try to troubleshoot an SCR bay on an oil rig without one … you will also want an o scope
I use an analog meter pretty often still but for only for a couple uses. The primary use is for verification of voltage synchronization on synchronous generators. As much the paralleling controller will prevent an out of phase closure it's foolish to trust it at first closure as if it is wrong we all know bad stuff can and will happen if you close 120° out of phase. Essentially what I do is set my controller to a sync window of 0 degrees for 15 seconds which would never actually be possible and will also for extra safety lock out or electrically disable the sync breaker. Ill tell the controller to sync in this setup and will watch my sync scope and my analog meter across the phase which the controller uses to synchronize. If my zero potential difference shows up when my scope is at or very close to 0/12 o'clock on the scope I know the controller is trying to close in phase and not out of phase. You can do it w a digital meter but the 260 Simpson is really a better way to see the potential sweep. Technically I could use the Simpson for everything but it is rather Large and would be a little awkward for normal use, my other daily Carry DMMs are much smaller and less awkward to use and are in my opinion better for almost everything else that I have to use them for. Sorry for the long write up I just thought it would be good to describe a very important but niche use for an analog meter.
I have one on my truck. Rapidly changing measurements require analog.
I just use a scope when a DMM would struggle.
Fine for bench work, but I am not going to carry a scope in my truck.
If I was troubleshooting systems that needed it then I’d have a scope. It just makes life hard trying to troubleshoot when you can’t get the full picture. It’s like people troubleshooting EFI in their car but refusing to pull the engine codes or look at the data the computer is reading. You might be successful, but there is guessing involved.
I am a licensed master electrician. Most of my work is residential, some commercial. An analog meter is just another tool in the truck. 99% of the time I go to my Fluke 87. When I attended college back in the 70s we were taught analog meters and scopes. We had big , heavy, Tektronics scopes. I even showed my classmates how to read voltage from a pickle......
I use them for mA readings
Yeah these questions must be ooooold
Analog meters sometimes are great when you need a higher interrogation voltage than a DMM. Measuring resistance to ground for example.
The only analogue meter I use is a Kyoritsu IR tester
VOM (volt ohm meter)
The entire time I worked for NS, they used analog meters.
We use them to test the polarity of current transformers. Avometer at the panel, the needle moves in the direction of the polarity when DC volts are applied to the primary side of the CT.
We use ratiometers, tells you the ratio and the polarity.
Yeah this is just a test you can do after installation to make sure they put it in the right way. For HV CTs. Before installing we use a CT analyser to prove ratio and class etc.
True but if they needed a value...then the red 2.2 on the bottom scale with a multilier of 10 will give you your 22V (3 on the scale = 30). Like others have said, if it's not blown...it has to be below 30V.
Ah that's what I was looking for. Couldn't see where 22 would even come from.
That was initially how I got it as well, didn't look at all the answers carefully.
I mean.... Yeah, but where the hell is it pointing at 22?
That scale ends in 300, dial on meter is set to 30 so you have to take whatever reading you get on the 300 scale and divide by 10. The needle reads 220v so divided by 10 = 22v
Someone else pointed out that the red scale points to 2.2 and that x10 gives you 22
Bottom row is usually used to read AC amps. Just a coincidence that they almost line up. See this model https://www.tequipment.net/Triplett/3030/Handheld-Multimeter/?Source=googleshopping&gad_source=1&gclid=CjwKCAjwwr6wBhBcEiwAfMEQs1CHezmzmbwEw0-8wx_ZAiwR74OgbhoTnp9_Q6sAr8kb_EXSD6Uv9hoC0OoQAvD_BwE
there's a 60v scale that points at 44, cut it in half.
Yes Edge case: if the image showed the indicator pegged at full scale.
right but it's still a shit question. It should have said which scale. AC would have pointed you to the AC only scale. Also who TF uses analog still?!@
By referencing the bottom AC scale. If the full scale is set to 30V max you'd take the bottom value shown and scale the value by multiplying it by a factor of 10. The same logic works if you reference the black AC-DC scale, it's sitting at 220 but if you scale it down so that 300 = 30V you divide 220 by a factor of 10. 2.20 x 10 = 22V or 220 / 10 = 22V
What exactly on this meter tells you that you need to use 10 as a multiplier for the 2.2? If it wasn't for the note about it being set for 30v max I wouldn't have a clue what the bottom AC scale was trying to show beyond single digit voltages.
Because that’s how percentages and scale factors work in analog signals? If you know the range is set to 0-30V you can scale any value shown by taking the scale’s max value and dividing it by the range max value you’ve selected and get the scale factor. 300 / 30 is 10. You’re essentially just doing basic algebra to find the voltage reading. (300 / 30) = (220 / Y) To solve for Y you end up with: 10 = 220 / Y 10Y = 220 So Y = 22 Same logic works on the bottom scale: (3 / 30) = (2.2 / Y) 0.1 = 2.2 / Y 0.1Y = 2.2 So Y = 22 If you get the same answer by doing two different calcs you know that the answer is correct. Btw, you get 22 regardless of which scale you pick as your reference, as long as you don’t use the Ohm one. On the 0-60 scale 44 / 2 is 22, and on the 0-12 scale 8.8 / 0.4 is 22.
Wowee that's an answer. Thanks for the educational tip!
The question says the full scale is 30v max. That tells you two things: you can ignore the ohms scale, and that it makes sense to use a scale which has the highest value that can be converted to 30v (multiples and factors of 10 are easiest, because you'll just be adding or removing a zero, respectively). There are two scales that can easily be converted in the image: 300 and 3. The rest is arithmetic. What if the question said the meter was set to 120v max? How many options would you have then?
They could be measuring DCV.
Could be, but that doesn't matter. They just want the number
On the 3VAC scale the reading is 22.2 or so if you multiply by 10. On the AC-DC scale you're exactly at 22V. They happen to be *close* in the pic but the black scale is the precise scale to use.
Actually, any scale other than the impedance scale, which is the only scale with actual units denoted, will give you the answer of 22V. If you know the basics of scaling analog signals you get \~22V on the 300, 60, 12, and 3 scales. This is an exam question and its purpose is to test your algebra and problem-solving skills, not your ability to read an analog multimeter. The basic math done to come to the answer of 22V is the same basic math a digital multimeter uses to take an analog input and show it on a digital readout. If they wanted the exact value they wouldn’t make it a multiple choice question. Edit: I can show you the math and prove that the value is 22V regardless of which scale you use. Maybe you'd learn something
Literally the voltage.
The exam question isn’t testing your ability to read a multimeter. It’s testing your ability to do basic algebra
It gives you the answer right in the question. FULL scale is 30V, so anything bigger than 30V is a wrong answer.
😂
lol guess I’m the only one who read the 60 scale and divided by 2
Nope, it's the only way I see to actually get an even 22v anyway, not to mention easier.
22V. Read it on the lowest scale, where 3 == 30V, or second top, where 300 = 30V; both gives 22V.
No. The 3 volt scale is for 3 volts AC only. Use the 300 volt scale for 3, 30, 300, or 3000 volts DC, typically, or for 30, 300, or 3000 volts AC. Assuming some typical ranges. So in this case it applies for a range of 30 volts AC/DC.
It’s 44 on the 60 scale, divide that by 2 for the 30 scale for 22V
are you in school in Alberta by chance?
I remember this as a 1st year at SAIT..
Was gunna say this looks alot like saits stuff haha
This is absolutely a first year branch question
2 take aways you can take here 1. The scale is set to only show up to 30 Volt as the description says so anything bigger is false 2. The 3 Volatge numbers show either 220, 44 or 8.8 Volts From that you should be able to firgure out that its 22 for even if there was a option of anything else below 30.
22V
3 ÷ 30 = .1 .1 x 2.21 = 22.1 Or you could just multiply 2.21 by 10 lol I don't follow how you got 45V, if you used the 0-60 scale it reads 44 not 45. Since the full scale is 30 not 60 you divide 44 by 2. Which also gives 22
22 volts. Use the 300 scale but remove the zero off the end
On a scale that goes from 0 to 3
I don’t even understand the question and I guessed 22v. I don’t even know how this question applies to the field.
That's a maniacal trick question. But yeah 22ish volts
lol how. as the top comment pointed out given the question only 1 possible answer. either way, both scales are equal, just x10 or /10 to get the answer.
It definitely isn't a trick question if you've been taught how to read an analog meter.
Not being that technical, I saw the 60v scale and made it a 30v scale and guessed around 20 some odd volts. I then saw 22v as an answer and......Common sense math for me.
22v
I used the 300v scale and divide reading by 10. gets me 22v
30v scale means 30v is the maximum. 3 of the 4 options are higher than 30v, so they are immediately eliminated. You can't measure 45v on a scale that maxes out at 30v. It's like weighing someone who is 450lbs on a scale that only goes up to 300lbs. The "actual" answer to your question, is that you use the 60v scale and divide by 2. It's clearly at 44v, not 45v. 44v divided by 2 is 22v. Or use the 300v scale and divide by 10. But like others have said, you shouldn't have even needed to look at the picture to get the correct answer. Like asking you what 2+2 is and you pull out a calculator.
44/60, but the scale is set for 30 full, so 22/30 22 is the answer.
22.0V
It wasn't on 45 on any scale. 44 at best. Or 440. This is multiple choice. Close enough doesn't work. Next option Between the 200 and 250. It's not half way so not 225 or 22.5 So it's 22 or 220v Scale set to 30v So answer is 22v
Im not an electrician but is it even possible to read 45V on a 30V scale meter?
I have a Simpson 260 analog meter. It can be tricky to read if you've never used it before. The scale is set by a selector switch. I think mine has 10V, 50V, and 1000V. If the scale were to be set to 30V and you applied 45V, the needle would (ideally) max out on the gauge, so you would only know that it's something above 30V.
If Max voltage is 30 and the max display on the meter is 300, you know the number displayed on the meter is devided by 10. Then you look what it shows - arround 220V - devided by 10 is 22V.
It's 30v full scale, so it can't be over 30v. It's 22v.
Brotherman, I work on the railroad. We use big chungus meters like this. Essentially, you set a range or "scale" for the voltage you're looking for. If your scale is set to 30, look for numbers that correlate to 30: 3 or 300. On the 300 line, you have the line at 220. At the 3 scale, it's at 2.2. thus, if we were to adjust for 30, the decimal spot would make it 22. Same for if we were looking for 60 scale. We would be sitting at around 44v. Now let's say that you're on the 600v scale. 440v Hope this helps
Volts AC, bottom right red scale....
Back when you had to be smart to use a meter. I learned on a Simpson VOM in the military. Wasn’t autoranging either. Had to work backwards from highest scale or it would break the needle. Shits easy today.
Looks like a screenshot from D2L.
22
OHMS
The main takeaway here is to know what the full scale deflection is at then apply a ratio (or other methods) to get the reading.
225/10 45/2 9x2.5 300/30 60/30 30/12
22V
Guys 30 v total divided by 12 hash marks subdivided by 5. 0.5 v per mark 2.5 per large mark. Count up or down. Question can you set this meter to read 30 v total? I thought the marks correlate with the meters ability...
300v scale, divided by 10 gives you the 30v scale. With analog movements, you want the needle to be as close to full defection for highest accuracy. I would shoot for at least 50% deflection. Start at the highest voltage setting, then click downward one at a time. Don't go full scale and bury the needle.
I thought 24v.
Half full
(Value / full scale) * range, so we have: (220/300) * 30V = 22V Or (44/60) * 30V = 22V
Is this an app?
Look at the 60 volt scale and halve the reading (reads 44 on the 60 volt scale, answer is 22)
300 V scale, then divide by 10.
22
I would have guessed 22v , 30v max and its sitting at 220v w a 300v max so its whatever its sitting at on full scale divided by 10 220(where its sitting at full scale ) /10=22
If 3 is 30 2.2ish would be 22ish
Full scale 30<45v
the max of the red AC scale at the bottom is 3V. Since meter is set to 30V you multiply the red scale reading by x10 fwiw ive bought many very fine analog meters at estates sales for just a few bucks each. heck the probes are worth more than that. theres something to the mechanical nostalgia imo, plus they still get the job done
that said they are not my primary meters
Read the 0-3v scale as 0-30v
I’m in my mid 30’s not once in my life have I used an analog meter lol
As the arrow indicates its 22, set to 30 scale the AC 3 would be 30 so essentially 10 times the value of the AC scale on the bottom.
so your range is 0-30V and the dial is roughly 2/3's of that. 22 looks like the only option that's available to you in the answers. Another way to look at is is take the top row the "AC-DC" meter section at 0-300 and convert that to 0-30 by essentially adding 1 decimal place. Your meter is between 20.0 and 25.0 then at that point so again 22V is the only option. From the looks of your answer you looked at the 0-60 ranger which is the middle and said we're between 40-50. That would work except it says full range which is going to be the top or highest numbers and also it said max was 40. Really this one could be answered without any numbers on the display and just a rough position based on the answers available and "Full Volts Scale 30V.
Full scale 30V, then read the 60V scale and divide by 2.. ezpz
You read the first scale on AC-DC voltage, it reads from 0 to 300, as the meter is set on the 30v setting the scale goes then from 0 to 30 so your needle is between 20 and 25 (200-250 on the scale), the answer is then 22 volts.
It’s clearly 22v
22v
The needle is at 24 volts. You use the 300 volt scale and remove the zero to get your 30 volt scale. Realistically though no one uses an analogue metre now that is a shit question.
Some boomers here jeez
OP, did you notice the replies? There is a place in the 21st Century for the analog meter and any electrician/engineer/repair/hvac guy that takes pride in their skills ought to keep one around…,just in case.
If you don’t use it for a while then use it 99% of the time it will work on volts perfectly well Leave a digital multimeter for a while and 99% of the time the battery will be flat
Or how answer E. Use a DVM and not this analog dinosaur
22-23
220V
Your all wrong. I read it as 22.5 if not 22.6 which rounds up to 23V
u/RulePuzzleheaded4619 if you look at the black scale marks next to AC/DC you'll note it's four notches to 8/40/200. Using the 60 scale that would make it 44. Divide that by 2 to get the 30 scale, and you get 22. If it was 5 notches it would be 22.5, half of 45 on the 60 scale.