Q6. With reference to main distribution systems fitted with preference trips:
(a) State why the preference trip is fitted. (2)
(b) Explain the operation of a THREE stage trip. (8)
(c) State THREE circuits that can not be connected to the preference trip giving a reason for EACH (6)
Q6. With reference to marine electrical distribution systems:
(a) State the meaning of the term insulated neutral. (8)
(b) Briefly describe how the location of an earth fault can be found. (4)
(c) State the safety precautions to be taken before investigating faulty electrical machinery. (4)
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?
