By what means is the frequency of an AC...

Question 1 / 270705eccefa4bacbc34ba4d4815a

Question 1 of 270705eccefa4bacbc34ba4d4815a

By what means is the frequency of an AC generator controlled?

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Question 1 of 27070

Q

By what means is the frequency of an AC generator controlled?

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🔍 Key Concepts

• How AC generator frequency is related to shaft speed and number of poles • What part of a generator system controls prime mover speed (engine or turbine) • What rheostats, exciters, and capacitors mainly affect: voltage, reactive power, or speed

💭 Think About

• Ask yourself: Which device actually changes how fast the generator is turning, rather than changing its voltage or power factor? • Recall the basic frequency formula for an AC generator: how does speed (RPM) enter into that formula? • Which of these components is directly associated with the engine or turbine that is driving the generator?

✅ Before You Answer

• Verify which component is used to control speed of the driving engine/turbine under varying load • Confirm which components (rheostat, exciter, capacitor) primarily influence voltage or reactive power, not frequency • Be sure you connect frequency with mechanical speed, not with field strength or capacitance

Question 1 of 27070

Q

By what means is the frequency of an AC generator controlled?

A

rheostat

B

governor

C

exciter

D

capacitor

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Question 1 / 270705eccefa4bacbc34ba4d4815a

Question 1 of 270705eccefa4bacbc34ba4d4815a

By what means is the frequency of an AC generator controlled?

Back

Question 1 of 27070

Q

By what means is the frequency of an AC generator controlled?

If the question has a related picture, it will appear here.

🔍 Key Concepts

• How AC generator frequency is related to shaft speed and number of poles • What part of a generator system controls prime mover speed (engine or turbine) • What rheostats, exciters, and capacitors mainly affect: voltage, reactive power, or speed

💭 Think About

• Ask yourself: Which device actually changes how fast the generator is turning, rather than changing its voltage or power factor? • Recall the basic frequency formula for an AC generator: how does speed (RPM) enter into that formula? • Which of these components is directly associated with the engine or turbine that is driving the generator?

✅ Before You Answer

• Verify which component is used to control speed of the driving engine/turbine under varying load • Confirm which components (rheostat, exciter, capacitor) primarily influence voltage or reactive power, not frequency • Be sure you connect frequency with mechanical speed, not with field strength or capacitance