What change should be made in an AC . generator so that it may become a DC. generator ?
The essential difference between an AC generator and a DC generator is that :
(a) AC generator has an electromagnet while a DC generator has permanent magnet.
(b) DC generator will generate a higher voltage.
(c) AC generator will generate a higher voltage.
(d) AC generator has slip rings while the DC generator has a commutator.
(a) In what respect does the construction of an A.C. generator differ from that of a D.C. generator ?
(b) What normally drives the alternators in a Thermal Power Station ? What fuels can be used to heat water in the boiler ?