Which of the methods listed below is used to...

Question 1 / 270705eccefa4bacbc34ba4d48167

Question 1 of 270705eccefa4bacbc34ba4d48167

Which of the methods listed below is used to provide the rotational torque to cause an AC generator to turn?

Question 1 of 27070

Which of the methods listed below is used to provide the rotational torque to cause an AC generator to turn?

🔍 Key Concepts

• Difference between mechanical input (prime mover) and electrical/magnetic excitation in a generator • Role of residual magnetism in starting voltage buildup • What actually causes the shaft to rotate in an AC generator system

💭 Think About

• Ask yourself: which option directly supplies the mechanical turning force to the generator shaft, rather than just helping produce voltage? • Consider the normal power flow: does electricity create the rotation, or does rotation create the electricity in a generator? • Think about real-world examples (diesel engine–driven generator, turbine–driven generator): what physically spins the rotor?

✅ Before You Answer

• Identify which choice describes a mechanical driving source, not a magnetic or electrical condition inside the generator • Separate in your mind: producing torque vs producing voltage – they are not the same thing • Verify which options are about the internal magnetism/electrical excitation and which is about the external machine that turns the generator

Question 1 of 27070

Which of the methods listed below is used to provide the rotational torque to cause an AC generator to turn?

Residual magnetism remaining in the field.

Providing current to the field from an external source.

Residual magnetism remaining in the armature.

Starting of the prime mover.

Question 1 / 270705eccefa4bacbc34ba4d48167

Question 1 of 270705eccefa4bacbc34ba4d48167

Which of the methods listed below is used to provide the rotational torque to cause an AC generator to turn?

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Question 1 of 27070

Which of the methods listed below is used to provide the rotational torque to cause an AC generator to turn?