By help of prime mover which supplies the mechanical energy to the shaft of generator(in case of dc generators).
electricity is produced by generators the oil is used to run the generators.
Restate your question. Generators don't run in series. Generators always run on parallel synchronizing so your question is wrong.
This depends on the level of knowledge about building homemade generators. A stable homemade generator will run safety, while some generators built by non-professionals may be dangerous.
They are neither. Coal is a fuel which can be used to run motors and generators.
There are several backup generators that are designed to run quietly. Honda makes several models of Super Quiet generators that are said to have "ultra-low noise." Others include the PowerMax XP3500 and Generac 4703.
Some emergency generators do run of gas, but others run of solar energy gathered from the sun and stored. It really depends on the power plant you're getting it from. Contact the plant and ask them.
Yes there are back up generators that don't carry gasoline. We have the gas and propane generators; however, there are alternatives such as wind and solar power.
Home generators can be portable or stationary (standby). It quite depends on how often and how long are you going to run the generator.
Diesel generators are just as effective as their gasoline counterparts. in fact, diesel generators are often run more efficiently than gasoline powered ones and need less maintenance.
They usually run engines that turn generators
When flowing water is run through the machines
yes, it is possible. in fact in power systems all the generators do not run with same power factor.