Aux 2 Unit 5 Quiz 5

Aux 2 Unit 5 Q5

1 / 7

What adjustment does an AC generator make to return to steady-state voltage after a sudden large load application?

C) The generator switches to a higher frequency

B) The excitation system increases the field current

D) The voltage is automatically reduced to prevent overloading

A) The rotor decreases its speed

2 / 7

What happens to the output voltage of an AC generator immediately after a sudden large load is applied?

D) The voltage stabilizes immediately without any change

A) The voltage remains constant

C) The voltage drops temporarily due to the increased current draw

B) The voltage increases due to higher demand

3 / 7

Why does the output voltage of an AC generator drop momentarily when a large load is applied?

D) The electrical resistance of the generator decreases

B) The magnetic field weakens temporarily

A) The rotor speed increases too quickly

C) The generator cannot supply the immediate power demand without adjusting excitation

4 / 7

What happens to the output voltage of an AC generator as it transitions from the initial response to a steady state after a large load application?

C) It continues to drop until the generator stops

A) It remains below the normal level permanently

B) It gradually returns to the original steady-state voltage level

D) It spikes and then settles at a higher voltage than before

5 / 7

What role does the automatic voltage regulator (AVR) play in an AC generator during sudden load changes?

C) It regulates the field current to maintain output voltage

D) It changes the frequency of the output

A) It reduces the motor speed

B) It increases the mechanical torque

6 / 7

What happens if the excitation system fails to respond appropriately during a sudden load increase?

C) The output frequency increases

A) The voltage remains steady without any change

D) The generator operates more efficiently

B) The generator's output voltage may remain low, leading to unstable operation

7 / 7

How does an AC generator maintain steady-state voltage under varying load conditions?

A) By adjusting the frequency of rotation

B) By controlling the excitation current to adjust the magnetic field strength

D) By reducing the electrical resistance of the windings

C) By varying the size of the rotor

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