Q3. With reference to preferential tripping in a marine electrical distribution system. a) With the aid of a sketch, describe a typical arrangement to provide three stages of tripping an instantaneous protection against short circuit. (10) b) State why this protection is required. (6)
Q7. a) Describe the routine tests required for self-contained breathing apparatus sets (8)
b) Describe the procedure to be adopted to find missing personnel in a smoke-filled accommodation area. (8)
Q1. With respect to generators and main circuit breakers and their protection devices:
a) What are safeties incorporated in Air circuit breaker (ACB) of ship’s generator and prime mover? (10)
b) Write Short Note on Negative phase Sequence Relay. (6)
Q7.a) What are the potential hazards associated with working on an engine room crane at a height? (5)
b) What is risk assessment? What risk mitigation measures will you take to mitigate the hazards identified by you while working at height? (6)
c) With reference to Q7 (a), what checklists and permits will you fill up before commencing the work and who will authorize the work permits? (5)
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?
