Aux 1 Unit 12 Q2

1 / 10

How can the preferential tripping sequence be tested?

D) By reducing the system's capacity

A) By increasing the load on non-essential circuits until the system reaches its maximum capacity

C) By disconnecting all loads from the system

B) By deliberately overloading the system to see if non-essential loads are shed in the correct order

2 / 10

Why is it important to test the generator reverse power trip?

A) To ensure the generator operates at full load capacity

C) To increase the generator's efficiency

D) To decrease the generator's output

B) To confirm the generator will disconnect automatically if it starts to absorb power from the grid, preventing potential damage

3 / 10

What is the procedure to test the auto start-up of an emergency generator?

D) Reduce the fuel supply to the emergency generator

B) Increase the load on the main generator

A) Disconnect the main power supply to simulate a power failure

C) Manually start the emergency generator

4 / 10

How can a generator over-current alarm be tested for proper operation?

C) By shutting down the generator

D) By switching the generator to standby mode

B) By reducing the generator's voltage output

A) By gradually increasing the generator's load until the current exceeds the preset limit

5 / 10

Why is it critical to test the generator over-current trip?

A) To prevent the generator from running efficiently

B) To confirm that the generator will automatically disconnect when the current exceeds safe operating limits, preventing damage to the generator and the electrical system

D) To ensure the generator can run without interruptions

C) To increase the load capacity of the generator

6 / 10

What is the correct procedure for testing a generator over-current trip?

B) Disconnect the generator manually

A) Gradually increase the load until the current exceeds the trip setting, causing the generator to trip off the line

D) Run the generator without any load

C) Decrease the generator's voltage output

7 / 10

What is the purpose of testing the generator over-current alarm?

D) To disable the generator's safety features

C) To increase the generator's voltage output

B) To verify that the alarm will sound when the generator's current exceeds safe levels, allowing for corrective action before a trip occurs

A) To ensure the generator can handle any load

8 / 10

What is the most common method to test a generator reverse power trip for correct operation?

D) Overload the generator deliberately

C) Increase the generator's load to maximum capacity

A) Manually disconnect the generator from the bus bar

B) Gradually reduce the generator's load until it begins to motor, simulating a reverse power condition

9 / 10

Why is testing the preferential tripping sequence important?

D) To disconnect all loads from the system

B) To ensure that non-essential loads are shed in the correct order, maintaining power to essential systems and preventing a total blackout

A) To prevent the system from operating efficiently

C) To increase the system's power output

10 / 10

Why is it important to test the emergency generator's auto start-up feature?

B) To verify that the emergency generator will automatically start and provide power during a main power failure, ensuring continuous operation of essential equipment

A) To ensure the generator does not start under any conditions

D) To prevent the generator from starting

C) To increase the load on the main generator

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