To remove an alternator operating in...

To remove an alternator operating in...

Question 1 of 270705eccefa4bacbc34ba4d481c3

To remove an alternator operating in parallel with another unit from the main electrical bus, what must be done FIRST?

Question 1 of 27070

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Q

To remove an alternator operating in parallel with another unit from the main electrical bus, what must be done FIRST?

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🔍 Key Concepts

• Paralleling generators/alternators on a main bus • How load sharing works between units in parallel • What happens if you open a breaker while a unit is still carrying load

💭 Think About

• Before taking an alternator offline, what condition should its load be in compared with the other unit? • If you open the circuit breaker while the alternator is still supplying current, what mechanical and electrical effects could occur? • Which action directly changes how much current (kW) the outgoing alternator is contributing to the bus?

✅ Before You Answer

• Verify which step directly reduces the alternator’s load before disconnection • Check which option is about breaker operation versus load adjustment • Confirm the safe sequence used on ships: match/synchronize → share load → remove load → open breaker → adjust as needed