How will the value of the output frequency...

How will the value of the output frequency...

Question 1 of 270705eccefa4bacbc34ba4d4815b

How will the value of the output frequency change if the load is removed from a turbogenerator having a governor speed droop setting of 3%?

Question 1 of 27070

Q

How will the value of the output frequency change if the load is removed from a turbogenerator having a governor speed droop setting of 3%?

🔍 Key Concepts

• Governor speed droop and what it means for how speed (and therefore frequency) changes with load • Relationship between generator speed and output frequency in a turbogenerator • What happens to prime mover speed when electrical load is suddenly removed

💭 Think About

• If the generator is running at rated load and rated frequency, what does removing load tend to do to the turbine speed? Faster, slower, or same? • With a 3% speed droop setting, does the governor hold speed perfectly constant with changing load, or does it allow some variation? In which direction when load decreases? • How is electrical frequency related to mechanical speed of the generator shaft? Think: if speed goes up, what happens to frequency?

✅ Before You Answer

• Verify how speed droop is defined: percent change in speed from no-load to full-load for a given governor setting • Confirm that no-load speed vs full-load speed on a droop governor are not equal, and which one is higher • Check that output frequency is directly proportional to shaft speed, so any change in speed means the same percentage change in frequency