More than likely you'll have to cut the supply pipe off behind the valve or loosen the large nut on the valve which would release the valve from the compression ring...then just replace the valve, if that is what you are attempting to do.
Depends on the type of joint
For supply, it is copper and galvanized iron. For waste, ABS (plastic) or cast iron.
The voltmeter is connected across the supply and the ammeter is connected in series with the supply.
Because it used to be cheap and the best material. In the last 10 years more homes are going to plastic pipe.
New York, as NY has the most high rise buildings thus we have the most copper and our water supply does not attack copper as other states water supply can
it should be connected to a breaker in the distribution panel.
Use washing machine hoses instead of plastic supply lines.
why does the lamp bright when it is connected to the AC supply
If additional resistance is connected in parallel with a circuit the supply voltage will decrease?
No change in supply voltage as additional resistance is connected in parallel circuit.
You can measure the current and power of a 'power supply', using an ammeter and a wattmeter. With the power supply connected to its load, the ammeter must be connected in series with the power supply's input. The wattmeter's current coil must also be connected in series with the power supply's input, and its voltage coil must be connected in parallel with the supply, taking the instrument's polarity markings into account.
There are various companies that supply plastic chairs. One can find different types of plastic chairs by looking for event rental stores or companies.
Trains are built with plastic and metal. Electricity is used to run the motor in the train. The train gets the electricity from the track or catenary wire which is connected to the appropriate power supply.