Q9. With reference to the paralleling of A.C. generators:
(a) Outline the requirements of synchronisation (3)
(b) Explain how KW power is shared (2)
(c) Explain how Kvar power is shared (1)
(d) State FOUR types of damage that may be caused when machines are incorrectly synchronised. (4)
Q10. Describe, with the aid of a circuit diagram, a synchro-converter for the variable speed control of A.C. motors. (10)
Q10. (a) State FIVE essential electrical services that are able to be operable under fire conditions.(5)
(b) Explain how electric cables for the essential services in part (a) pass through bulkheads whilst maintaining gas tight and water tight integrity. (3)
(c) State the requirements for the cables which supply electrically driven emergency fire pumps.(2)
Username or email address *Required
Password *Required
Note: Entering wrong username in the login form will ban your IP address immediately. Entering wrong password multiple times will also ban your IP address temporarily.
Log in
Lost your password? Remember me
No account yet?
