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Old 05-21-2012, 05:01 PM   #1
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Kilo to Volt help


I understand how to convert say Volts to kilo Volts and kilo Volts to Volts.

If you see 5 kV before you can do any kind of Formula you have to write out the right Value first.

So if I see 5. kV I move the Point three places to the Right to make it Thousand
5,000 Volts I get this.

Now in the Book I have it uses the same example to show how to convert Volts to kiloVolts.

If you see 5,000 Volts you move the Point three places to the Left so you will write
.5 kV I get this.

But if I see 5,000 Volts this is 5 thousand whole Volts and if I want to write it out as kV I just write 5 kV.

But if I write it out as .5 kV this is a Fraction.

So am I right that if I see 5,000 Volts and I want to write it out as kV I move the Point three places to the Left and when I write it out I do not put the Point I just write it like this 5 kV??
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Old 05-21-2012, 05:34 PM   #2
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Kilo to Volt help


You are confused. To convert kilovolts to volts, multiply by 1000. To convert volts to kilovolts, divide by 1000. In your example, you got the decimal point in the wrong place. 5000 volts is 5 kilovolts. Thinking about moving the decimal point three places is the way it is taught in perhaps third grade, once you get into high school it is better to understand that kilo means 1000.
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Old 05-21-2012, 07:17 PM   #3
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Kilo to Volt help


Shoulda listened to Gerry Ford in the 70's and converted to metric- always helps with jargin like Kilo, milli, centi.......

I wish they would can the old archaic English inch-pound-yard-gallon-quart system. Sheesh.
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Old 05-21-2012, 08:03 PM   #4
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Kilo to Volt help


5Kv is 5000 volts.
.5Kv is 500 volts. It legitimate to write .5 Kv if that suits you.
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Old 05-21-2012, 10:19 PM   #5
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Kilo to Volt help


Thanks got it
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Old 05-21-2012, 11:38 PM   #6
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Kilo to Volt help


Easier to work with jouls......
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Old 05-24-2012, 08:52 PM   #7
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Kilo to Volt help


Dimensional Analysis is hard for a lot of people
http://www.chem.tamu.edu/class/fyp/mathrev/mr-da.html
There are probably other links that explain this idea better.

When you're good at it you can convert, for example, miles per hour to furlongs per fortnight or to microns per century.

http://www.onlineconversion.com/

Last edited by Yoyizit; 05-24-2012 at 08:56 PM.
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Old 05-25-2012, 08:07 AM   #8
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Kilo to Volt help


One good thing about the metric system is the standard.
Kilo is always 1000
kilovolt is 1000 volts
kilowatt is 1000 watts(not really metric)
kilometer is 1000 meters
kilogram (common referred to as a kilo) is 1000 grams
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Old 05-25-2012, 03:34 PM   #9
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Kilo to Volt help


I think I have it if I see
5 mV I would say .005 Volt and if I see 5 kV I would say
5,000 Volts Right?
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Old 05-25-2012, 04:54 PM   #10
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Kilo to Volt help


yes milli is divide by 1000, kilo is multiply by 1000.
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Old 05-25-2012, 10:30 PM   #11
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Kilo to Volt help


And one more thing if a D BAT. has 1.5 Volts at 4,000 mA this meens it can give 4,000 milli Amp for one Hour right?
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Old 05-26-2012, 01:14 AM   #12
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Kilo to Volt help


Quote:
Originally Posted by biferi View Post
And one more thing if a D BAT. has 1.5 Volts at 4,000 mA this meens it can give 4,000 milli Amp for one Hour right?
Sort of, but not really. It could give 40mA for 100 hours for sure. But at high discharge rates batteries become inefficient. So it might give 400mA for 5-6 hours instead of the expected 10. And if you could even get 4000mA out of it, it would last much less than an hour.
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Old 05-26-2012, 07:13 AM   #13
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Kilo to Volt help


Quote:
Originally Posted by biferi View Post
And one more thing if a D BAT. has 1.5 Volts at 4,000 mA this meens it can give 4,000 milli Amp for one Hour right?
Usually they are tested at a 20 hour rate, so 4000/20 = 200 mA for 20 hours = 4 A-h.
If you take 40 hrs to discharge it you might get more than 4 A-h capacity.

And with lead acid batteries there is the Peukert Effect.
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