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Battery. Analogue (needle type) Voltmeters do not require batteries to display results
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How many volts in 30amps?
All fuses have a voltage rating, which is independent of its current rating. The current rating is the maximum current the fuse will pass; any higher, and it will blow. The voltage rating is the maximum voltage that is allowed to appear across the fuse should it blow. If the voltage is any higher than the fuse manufacturer's rating, it may arc across inside the fuse, causing power to continue to be supplied to the faulty item that caused the fuse to blow in the first place. This is obviously very dangerous, and could result in severe electric shock, or fires. The voltage rating is usually stamped on one end of the fuse.
Which is the most reactive of the halogens and why is it the most reactive of the halogens?
fluorine is the most reactive
What animal has the most mitochondria?
The animal with the most cells in their body have the most mitochondria.
Do all the lemon plants have seeds?
No not most of them have seeds because most of them grow with seeds and most do
Which brand of paper towel is most absorbent?
bounty is the most absorbent
Do ammeters have batteries?
They don't need to, but if it is digital, it may have them. (Ohmmeters must have a battery)
What is ohmmeter?
An ohmmeter is a type of electrical metre that measures electrical resistance. When in resistance-measuring mode, multimeters also operate as ohmmeters. An ohmmeter measures the resistance of a circuit or component by passing electricity through it.
How many volts in 30amps?
All fuses have a voltage rating, which is independent of its current rating. The current rating is the maximum current the fuse will pass; any higher, and it will blow. The voltage rating is the maximum voltage that is allowed to appear across the fuse should it blow. If the voltage is any higher than the fuse manufacturer's rating, it may arc across inside the fuse, causing power to continue to be supplied to the faulty item that caused the fuse to blow in the first place. This is obviously very dangerous, and could result in severe electric shock, or fires. The voltage rating is usually stamped on one end of the fuse.
How test resistances?
we can measure the resistance if we know the voltage and current passing through a line (V=IR)AnswerYou can measure its approximate resistance using an ohmmeter, but ohmmeters aren't particularly accurate. A better way would be to use a Wheatstone Bridge, which is highly accurate.
Why multimeter cannot used for measurement of insulation resistance?
Because ordinary ohmmeters are calibrated to measure a range of resistance values that are significantly lower than the resistance of insulation. It should also be realised that we usually test insulation resistance while subjecting the insulation to a high electric field, which a normal ohmmeter is incapable of producing.
What are some nine letter words with 1st letter O and 2nd letter H and 3rd letter M and 7th letter E?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern OHM---E--. That is, nine letter words with 1st letter O and 2nd letter H and 3rd letter M and 7th letter E. In alphabetical order, they are: ohmmeters
What are some nine letter words with 2nd letter H and 3rd letter M and 4th letter M and 8th letter R?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -HMM---R-. That is, nine letter words with 2nd letter H and 3rd letter M and 4th letter M and 8th letter R. In alphabetical order, they are: ohmmeters
What do use to measure Resistance?
To measure resistance, you could use an ohmmeter. But ohmmeters are not particularly accurate, so other methods are preferable. These include the use of Wheatstone's Bridge (which compares the unknown resistance with known values) or a Ducter (for very low resistances).
What is the difference between a series ohmmeter and a shunt ohmmeter?
Basically, your series and shunt ohmmeters differ in circuit configuration. Your series ohmmeter is configured in a way that your "meter" (which has internal resistance) is connected in series to your "measured resistor" and we all know that those TWO resistances will ADD up causing some sort of inaccuracy. While on the other hand, your shunt ohmmeter is configured in a way wherein your "meter" is connected in PARALLEL to your "measured resistor" that will ease-up the inaccuracy but will only measure resistances ranging from 200 Ohms to 400 Ohms (typically and depending on your configuration).
What are some nine letter words with 2nd letter H and 5th letter E and 8th letter R?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 19 words with the pattern -H--E--R-. That is, nine letter words with 2nd letter H and 5th letter E and 8th letter R. In alphabetical order, they are: chaseport chevelure chiselers chokebore ohmmeters phonecard physeters shareware shiverers shorebird shoreward shovelers showerers shriekers therefore threepers wherefore whiteners whiteware
What are some nine letter words with 3rd letter M and 4th letter M and 9th letter S?
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 34 words with the pattern --MM----S. That is, nine letter words with 3rd letter M and 4th letter M and 9th letter S. In alphabetical order, they are: bummarees commandos commences commerces commerges commoners commoneys communers commuters dummerers dumminess dummkopfs gammoners gemmeries gemminess gummatous gumminess hammerers hamminess jemminess lammigers mammifers mummeries mummifies ohmmeters pemmicans rummagers rumminess summaries summoners summonses tommyrots yammerers yumminess
Why digital multimeter fails to read low resistance values?
They read low resistance values very well. I measured several dead shorts today accurately with a digital voltmeter. However, when attempting to measure LARGE amount of resistance, the current generator in a standard digital voltmeter may fail to effectively penetrate the medium being measured. It is for this reason that Meggers (Mega-Ohmmeters) are used to measure high amounts of resistance. They usually employ a hand crank to develop the current needed to effectively flow through the medium being measured. Sometimes digital voltmeters can be very inaccurate if they are measuring something that matches the impedance of the meter (loading effects of the voltmeter), but that is another story.
