Exam Question
(a) Briefly discuss the conditions that needs to be satisfied for synchronizing. (8)
(b) Explain about the working of a synchroscope with the help of a sketch. (8)
Class 4 (4th Engineer)
MET
📅 Nov 2022
Reference Answer
### (a) Conditions for Synchronizing an Alternator (8 Marks)
For the successful paralleling of an incoming alternator with an already live switchboard busbar, four critical conditions must be satisfied. Failure to adhere to these conditions can result in severe electrical and mechanical damage to the alternator, prime mover, and the entire power distribution system.
1. **Identical Phase Sequence:**
* **Condition:** The phase sequence of the incoming alternator (e.g., R-Y-B) must be identical to the phase sequence of the busbar.
For the successful paralleling of an incoming alternator with an already live switchboard busbar, four critical conditions must be satisfied. Failure to adhere to these conditions can result in severe electrical and mechanical damage to the alternator, prime mover, and the entire power distribution system.
1. **Identical Phase Sequence:**
* **Condition:** The phase sequence of the incoming alternator (e.g., R-Y-B) must be identical to the phase sequence of the busbar.
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