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Your electricity meter seems stuck?
energy meter is a mechanic device. as every mechanic device it is subject to fatigue, and may fail. But generally, this is not such a bad news. In most cases, malfunction cause the energy meter to slow or get suck. what happens to the energy bill? you guessed it.
Why are analog meters used in vehicles?
If you are cruising down the freeway, you can get about the same information on, say, your speed, if you look at an analog meter as a digital one. But if you are braking and your speed is changing, a digital meter will be "fluttering" as it continuously gets a new reading to post, and it won't be able to tell you how fast you're going. (This had to do with the way the sensors "sample" the speed to display it.) In the analog meter, the needle will be falling as you slow down, and the human brain has a better "grasp" of the "meaning" of the falling needle than it has of blinking numbers on a display. Certainly as the needle on an analog meter passes a specific mile-per-hour marker, you can see how fast you were going. But it is the value of the moving needle in the analog meter and the ability of the brain to "understand" it that makes it so much more effective than a digital display.
What is the effect of low grid frequency?
Any equipment that is dependant upon frequency will be effected. Synchronous motors will slow down.
What is the principle on which LCR meter works?
It uses Impedance technique. Check Out some LCR meter data sheets such as Agilent user manual it has a break down on the measurement principles or search for books on instrumentation and measurement which explain the actual circuit diagram.
What are the Advantages and disadvantages of current meter?
disadvantage of current meter
