As shown in the illustration, when...

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Question 1 of 205eccefa4bacbc34ba4d4817a

As shown in the illustration, when transitioning from the electrical plant status indicated by figure "A" to the plant status indicated by figure "B", what is the functional purpose of this transition? See illustration EL-0040.

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🔍 Key Concepts

• Compare how kW (active power) is shared between the two generators in figure A versus figure B. • Compare how kvar (reactive power) is shared between the two generators in figure A versus figure B. • Remember that governor/speed control mainly affects kW sharing, while voltage/excitation control mainly affects kvar (and power factor) sharing.

💭 Think About

• From A to B, which quantity becomes more evenly shared between the two generators: kW, kvar, amps, or power factor? • Look at the totals: Does the system’s total kW or total kvar change between A and B, or only the way it is divided between the machines? • If one generator is heavily loaded and the other is lightly loaded in A, what adjustment would the watchstander normally make first to protect the plant and the generators?

✅ Before You Answer

• Verify which quantity (kW, kvar, amps, or power factor) is closest to equal between Gen #1 and Gen #2 in figure B. • Confirm that the system totals (total kW and total kvar) are the same in A and B, and only the distribution changes. • Check which control you would adjust on a ship’s generator set to achieve this change (governor for kW vs. voltage regulator for kvar).

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