The output of a separately-excited AC...

Question 1 of 270703PWcORHM80KRhexGSh8w

The output of a separately-excited AC generator running at a constant speed can be controlled by:

Question 1 of 27070

The output of a separately-excited AC generator running at a constant speed can be controlled by:

🔍 Key Concepts

• Separately-excited AC generator – what does 'separately-excited' tell you about how the field windings get their power? • Difference between field circuit and armature circuit in a generator. • How changing magnetic field strength affects generator voltage output when speed is constant.

💭 Think About

• If the generator speed is fixed, what part of the machine can you vary to change the strength of the magnetic field and therefore the output voltage? • Which component actually carries the load current, and which component primarily controls the magnetic field that sets the output voltage level? • Look at each choice and ask: does this component mainly conduct power to the load, provide mechanical contact, or regulate the field strength?

✅ Before You Answer

• Verify which component directly affects field current and therefore the magnetic flux. • Distinguish between current-carrying parts for load power (like armature and brushes) versus control parts that set voltage. • Remember that in a separately-excited machine, the field is powered from an independent source – which answer choice reflects changing that field power level rather than just its source device?