Parallel operation of two or more alternators on a common busbars is achieved among alternators first through synchronization and then load-sharing. a) (i) Why are alternators put in parallel anyway? (ii) What are the essential conditions for synchronizing two alternators? (iii) Draw a properly labelled diagram showing the synchronizing instruments employed with the synchronization (iv) Why must the synchroscope be switched off shortly after effecting synchronization? [4, 3, 10, and 2 marks] b) Two alternators are connected together on the main switchboard. Describe how one of them could be off- loaded and stopped for maintenance. [6 marks] KBE Doc. No.: EXM/F/03 Revision No.: 1 Page No.: 1/1 Select all of the true statement about process synchronization granularity. Select one or more: a. Fine-grained processes do not have any synchronization or parallelism. b. Independent processes have no synchronization and are unrelated. c. Medium granularity is usually associated with multi-threaded applications. d. Very coarse granularity is often associated with distributed processing.