An AC generator is an electrical machine which produces alternating current electricity. It must be turned by a prime mover which can be an internal combustion engine - driven, usually, by diesel oil...
question is wrong....ac is generated in alternator<<>>The most likely reason is that there is no field voltage being generated. This is controlled by the voltage regulator. Check to see...
A DC generator is Direct Current most common in industrial environments.Limited to DC equipment such as motors, cranes, certain types of lighting etc.A AC generator is Alternating Current can be used...