ELECTRICAL SYSTEM 413
4.What is the function of a reactor? Describe the various arran-gements used for location of
reactors.
5.What is a circuit breaker? What are the different types of circuit breakers that are employed in
typical power stations?
6.Describe the various generator-cooling methods.
7.Give a list of various electrical protective equipment used in a power station.
8.Describe the various methods of controlling the voltage at the consumer terminal used in
power supply system.
9.Write short notes on the following:
(a) Over-head and underground power transmission system.
(b) System of electrical energy transmission
(c) Practical working voltage
(d) Disposition of conductors
(e) Characteristics of relays
(f ) Control room
(g) Types of insulators.