Multimeter
Help with ammeter readings?
by Miley on Feb.01, 2012, under Multimeter
Help with ammeter readings?
If you put an ammeter anywhere on a cicuit, will the readings change?
I mean will it read the same amount of current anywhere on the ciruit.
I mean will it read the same amount of current anywhere on the ciruit.
Tranny slips under heavy load, then will not go into gear w/o toggling key. Sometimes won’t shift out of first?
by Miley on Jan.20, 2012, under Multimeter
Tranny slips under heavy load, then will not go into gear w/o toggling key. Sometimes won\’t shift out of first?
93 accord automatic. Fluid full and not burnt. Signals trouble code 15, both speed sensors check out okay with voltmeter. Tcm is intact internally. Gonna b easy to say tranny bad, but explain key issue. After a slip, I can put it in reverse while driving and it’s like neutral.
ARE THESE SUBWOOFERS OK?
by Miley on Jan.17, 2012, under Multimeter
ARE THESE SUBWOOFERS OK?
I bought two used 15inch kicker L7 subwoofers, they “look” ok, upon testing them with a digital multimeter at the 2000ohm setting i got a reading of around 4 on the meter for each sub. i heard it should be on the 200ohm setting where as i did it on the 2000ohm setting, does this make any difference?
Why is the current (in amps) the same all the way in a series circuit?
by Miley on Jan.08, 2012, under Multimeter
Why is the current (in amps) the same all the way in a series circuit?
In a series circuit, no matter where you put the ammeter, the reading will be the same. Why? I.e. if we use the hose/ water analogy, where current is how fast the water is flowing, and resistance is like a wall or blockage in the middle of the pipe, won’t the water SLOW down if it reaches a wall? Thus, if you had a circuit with only a cell and a bulb, wouldnt the ammeter reading be larger before the bulb than after the bulb?
a device that can induce alternating voltage using armatures forces to spin in strong magnetic fields is the?
by Miley on Dec.30, 2011, under Multimeter
a device that can induce alternating voltage using armatures forces to spin in strong magnetic fields is the?
a. generator
b. electric motor
c. voltmeter
d. superconuctor
**am having a little trouble understanding this questions, I have been reading my science book, if some could please help me understand how you get an answer that would be very helpfull to me. Thank you!
Measurement Uncertainty?
by Miley on Dec.10, 2011, under Multimeter
Measurement Uncertainty?
how do i work out the uncertainty of the graph ive plotted voltage vs current ?
ive only taken 1 reading for each one.. this was done using a digital multimeter
(Current +) (Current -) (Voltage +)(Voltage -)
0 0 0 0
0.55 -0.55 0.70 -0.70
1.57 -1.57 1.60 -1.60
2.58 -2.58 2.70 -2.70
3.62 -3.62 3.60 -3.60
4.63 -4.63 4.60 -4.60
5.52 -5.52 5.60 -5.60
5.64 -5.64 6.70 -6.70
7.63 -7.63 7.60 -7.60
8.61 -8.61 8.60 -8.60
9.56 -9.56 9.60 -9.60
someone point me to the right direction please!! thanks alot in advance
p.s sorry about the table i know it looks a mess but i cant copy the grid on here it comes out like this
Are the placements of the voltmeters and ammeters correct?
by Miley on Dec.09, 2011, under Multimeter
Are the placements of the voltmeters and ammeters correct?
Here’s my make-shift figure:
http://imageftw.com/uploads/20111208/voltammeter.jpg
1. what voltage must be impressed acrossed it?? pls view my details…?
by Miley on Dec.01, 2011, under Multimeter
1. what voltage must be impressed acrossed it?? pls view my details…?
the hot resistance of an incandescent lamp is 220 ohms. it requires 1/2 amp to cause it to glow.
2.A certain milliameter, with a scale of 0 to 1.0 mA, has a resistance of 32 ohms. if this milliameter is connected directly across a 120-volt line, how much current will flow through the meter?
3. The ammeter-voltmeter method is used to measure an unknown resistance R. An ammeter (A) connected in series with the resistance reads 0.3 R. A voltmeter (V) placed across the ends of the resistance reads 1.5V. compute the value of resistance R.
What would make a 1000 watt subwoofer instantly blow fuses with a sound like BWAAAAAA, like the feedback noise?
by Miley on Nov.16, 2011, under Multimeter
What would make a 1000 watt subwoofer instantly blow fuses with a sound like BWAAAAAA, like the feedback noise?
Like the feedback from a CB but pushing my sub to its limits at full power and coming through every speaker? A short in the amps board? A burnt out diode? Where should I look for a short first? It is a Logitech Z-5500 Digital Speaker System
Model Number:
S-0115A (Subwoofer)
And I think it may have gotten struck by lightning, it stopped working around that time.
I know how to solder on a circuit board and have a multimeter, know how to use it and I need to know what I should test first if there is no short, and what to test next and what to try as a last resort.
Can I take it somewhere because it is just out of warranty and there is only one real electronics in my town?
Can a car stereo place fix amps?
25 minutes ago – 1 week left to answer.
Additional Details
I am going to take out the amp and look at it magnified 20x, if I dont see any obvious damage and then look for a short in the board itself and then test resistors …?
19 minutes ago
Whoa this thing has the biggest capacitor inside by the speaker I have ever seen!
It looks like a giant bagel wrapped in copper wire.
Would it more likely be the controller?
Since I dont even get a chance to turn it on then the controller could be causing it?
standard form and chemistry questions?? help please!!!?
by Miley on Nov.02, 2011, under Multimeter
standard form and chemistry questions?? help please!!!?
Give all the answers to the following questions in standard form and in the original units please:
10. A voltmeter is altered so that its settings are always 2*10^4 times too low. It gave a reading of 3*10^6 µA in an experiment. What should the reading have been?
11. A biomedical scientsist prepares a petri dish with agar and inoculates it with campylobacter. The scientist was expecting a colony of 6.9*10^5 bacteria. When analysed, the sample was found to contain the original number of bacterial colonies divided by 2*10^-6 bacteria. How many bacterial colonies had grown? was this more or less than expected?
also could some one please tell me what 6 399 969 000 = in standard form.
thankyou for all the help and please include working ouy. i appreciate it