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Most important part is the shunt. It diverts most of the current around the meter. They used to be 50 micro amp meter movements. They were 100 microamp movements with a resistor that matched the meters coil resistance and split the meter current. That is they fully deflect when 50 microamps is flowing through the coil of the meter movement. Electronic ones still have a shunt. It is basically a piece of metal used as a resistor. The resistors value determines the amount of current it will pass according to Ohms law. The full range current used in the calculation. "Amps equals voltage divided by resistance". "Resistance equals voltage divided by current". That would give you the full resistance. You calculate the 50 microamps and subtract its resistance and use the remainer as your shunt value. Part 1: Shunt Part 2: Meter That is an ampmeter. A watt meter is a combination of an ampmeter and a voltmeter. Ohms' Law applies strictly. You feed the amps and voltage to the meter movement ( now LCD display) and it "does the math" and displays in watts. Curent in amps is measured is series and volts are measured in parallel with the source. Voltage times amps equals watts. One kilowatt at standard household voltage of 115 volts A.C. is about 9 amps.
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How many kilowatt-hours of electricity are used by two 60 W electric blankets used for 9 hours?
In each hour two 60W blankets will use 120W. 120W for 9 hours = 1080 W or 1.08 Kilowatts.
How many Cubic inches in a kilowatt?
None. A cubic inch is a measure of volume while a kilowatt is a measure of power. The two measure different things and, according to the basic rules of dimensional analysis, conversion from one to the other is not valid.
What does it mean to divide into two congruent parts?
Two equal parts.
Two main parts of the Bible?
The two parts are the Old Testament and the New Testament.
What are the two parts of a paycheck?
The two parts of a paycheck include the amount earned and your information
What does kilowatt hours mean?
kWh = Power(kW) x Time (hours)AnswerA kilowatt hour (symbol kW.h) is a unit of measurement of electrical energy.
How do you check a dc ammeter?
a dc ammeter is a ammeter which has three pins and it works by two wires.
There are two units for energy What are they?
There are many more than two units in common use for energy. Some of them are: -- newton-meter -- joule -- foot-pound -- calorie -- watt-second -- kilowatt-hour -- horsepower-hour
How much kilowatt hours would a clothes iron with 1200watt and 120volts uses in 2 hours?
The iron uses 1.2 kilowatts (1200 watts) in one hour, so it uses 2.4 kilowatt hours in two hours.
How do you convert power reading in kWh to kva?
These are two different values. kWh is the amount of kW that are used in an hour. To convert kW to kva use the same formula but leave out the pf (power factor) component.AnswerFirst of all your should realise that power is measured in watts (or kilowatts), not in kilowatt hours! A kilowatt hour is an unit of measurement for energy, or work done, NOT power! So your question doesn't actually make any sense!Furthermore, a kilovolt ampere is the unit of measurement for apparent power, and it should be written as 'kV.A', not 'kva'.So you cannot convert energy in kilowatt hours to apparent power in kilovolt amperes, as we are talking about two completely different quantities! It's like asking "How do you convert miles into kilometres per hour?" That's what I mean by your question not making any sense!The first answer needs correction, as the kilowatt hour is not 'the amount of kilowatts used in one hour'. You do not 'use' kilowatts, as kilowatts is simply a rate. So the correct definition is that a kilowatt hour is the amount of energy used in one hour, at the rate of one kilowatt.
What should be done if an ammeter reacts in a reverse direction?
Swap the two wires connected to the Ammeter
Why there must be two wires connected to an ammeter?
Two.
How do you convert horespower to kwh?
You can't! Horsepower is the Imperial unit of measurement for power, whereas a kilowatt hour is used to measure energy -two different quantities! Your question is equivalent to asking, "How do you convert miles per hour into kilometres?"
If a television uses 475 watts how much is that a year in energy costs?
To answer this question two more factors are needed. One is how long is the television on in a 24 hour period and the second is the amount that you pay per kilowatt hour on your electricity bill.
How many kilowatt is in 1 hour?
A kilowatt hour is not in and of itself a measurement of time. It is power in watts (more specifically kilowatts) multiplied by time in hours. A kilowatt is equal to 1000 watts. If a device uses say 2500 watts for 1 hour, that is equal to 2.5 kilowatt hours. If that same device is used for 2 hours it is equal to 5 kilowatt hours. Right. And it is power multiplied by time, which is energy and is what you pay for on your inappropriately named "power consumption" energy bills.
When an ammeter is connected in a circuit which terminal of the battery must be connected to the positive terminal of the ammeter?
The positive terminal of the battery would be connected to the positive terminal of the ammeter. The load would then be connected between the two negative terminals, positive side of the load being connected to the negative side of the ammeter.
Why do you only need one ammeter in a circuit?
An ammeter is a amp meter put into a circuit in series. There is virtually no voltage drop or resistance in an ammeter so two in series would be redundant. If you have one in a circuit it will tell you the amps that circuit is generating, two would both give virtually the same result.
