When the prime movers of two paralleled...

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Question 1 of 205eccefa1bacbc34ba4d4770d

When the prime movers of two paralleled generators are equipped with mechanical-hydraulic governors, and are operating within their designed range, the unit with the least amount of speed droop will __________.

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🔍 Key Concepts

• Speed droop in generator governors and how it affects load sharing • Behavior of paralleled generators when system load increases or decreases • Relationship between governor speed setting and how much kW each machine carries

💭 Think About

• Imagine two generators running in parallel: what happens to each unit’s speed setting as load on the bus increases? • If one governor maintains higher speed (less droop) for the same change in load, which unit’s power output must change more to keep bus frequency stable? • How does a smaller change in speed per change in load (less droop) affect how aggressively a unit responds to load changes?

✅ Before You Answer

• Be clear on what speed droop means: change in speed as load changes, expressed as a percent. • Think about which governor characteristic causes a generator to take more or less kW when total load changes. • Verify that you are considering load sharing, not voltage/reactive (kVAR) sharing, which is handled differently.

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