Aux 1 Unit 15 Q5

1 / 10

Which device is typically used to indicate when the incoming generator is synchronized with the connected generator?

A) Ammeter

D) Frequency meter

B) Synchronoscope

C) Voltmeter

2 / 10

Why is it important to monitor the load-sharing between the generators after paralleling them?

C) To decrease the voltage of the incoming generator

B) To prevent any generator from being overloaded and to ensure that both generators operate efficiently and within their capacity

D) To increase the speed of both generators

A) To ensure that one generator takes the entire load

3 / 10

What should be done if the incoming generator is not sharing the load equally after paralleling?

C) Disconnect the connected generator

D) Increase the load on the connected generator

B) Adjust the speed governor of the incoming generator to balance the load-sharing with the connected generator

A) Shut down the incoming generator immediately

4 / 10

What is the final step in the paralleling procedure to ensure stable operation of the a.c. generators?

D) Increase the speed of both generators to maximum

A) Disconnect the incoming generator after a few minutes

B) Continuously monitor all operating parameters, including voltage, frequency, load-sharing, and power factor, to ensure stable operation and make adjustments as needed

C) Reduce the load to minimum levels

5 / 10

What should be done after the incoming generator reaches its rated speed and voltage?

A) Immediately connect it to the switchboard

D) Increase the load on the connected generator

B) Adjust the frequency and voltage of the incoming generator to match those of the generator already connected to the main switchboard

C) Shut down the connected generator

6 / 10

What is the first step in the procedure for paralleling an incoming a.c. generator with another generator already connected to the main switchboard?

A) Immediately close the circuit breaker of the incoming generator

C) Reduce the load on the connected generator

D) Increase the load on the incoming generator

B) Start the incoming generator and allow it to reach its rated speed and voltage

7 / 10

What should be done if one generator begins to supply more reactive power than the other after paralleling?

A) Shut down both generators

C) Increase the load on the generator supplying less reactive power

B) Adjust the excitation system of the generator supplying more reactive power to balance the reactive power output between the generators

D) Ignore the imbalance and continue operation

8 / 10

What is the correct action to take when the synchronoscope indicates that the incoming generator is in phase with the connected generator?

B) Increase the load on the connected generator

D) Wait for the needle to move to the 6 o'clock position

C) Decrease the voltage of the incoming generator

A) Close the incoming generator’s circuit breaker when the synchronoscope needle is stationary and pointing at the 12 o'clock position

9 / 10

Which parameter is crucial to monitor after paralleling the generators to ensure they are operating harmoniously?

B) The voltage, frequency, and power factor of both generators

C) The fuel level of the connected generator

A) The color of the generator casing

D) The temperature of the incoming generator's coolant

10 / 10

What should be done immediately after closing the circuit breaker of the incoming generator?

C) Disconnect the incoming generator from the switchboard

A) Shut down the connected generator

D) Increase the frequency of the incoming generator

B) Load should be gradually transferred to the incoming generator, ensuring that both generators share the load proportionally

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