Aux 1 Unit 15 Q4

1 / 7

Which maintenance task is important for ensuring the reliability of the generator's automatic voltage regulator (AVR)?

A) Replacing the engine’s fuel filter

D) Replacing the generator's bearings

B) Testing and calibrating the AVR to ensure it maintains the correct voltage output under varying loads

C) Cleaning the generator’s exhaust system

2 / 7

Why is it important to periodically test the generator under load during routine maintenance?

D) To improve the generator's appearance

C) To reduce the generator’s fuel consumption

A) To measure the generator's physical size

B) To verify the generator's performance and ensure that it can handle its rated load without any issues, such as voltage fluctuations or overheating

3 / 7

Why is it important to regularly check and clean the ventilation system of an a.c. generator set?

C) To increase the generator's speed

D) To improve fuel efficiency

B) To prevent overheating and ensure proper cooling of the generator’s windings and other electrical components

A) To reduce the generator's noise level

4 / 7

What routine maintenance should be performed to check the condition of the generator's bearings?

D) Test the generator’s fuel consumption rate

B) Lubricate the bearings and check for excessive noise or vibration, which may indicate wear or failure

C) Increase the generator’s operating speed

A) Measure the voltage output of the generator

5 / 7

Why should the generator’s brushes and slip rings be inspected during routine maintenance?

D) To reduce the noise produced by the generator

B) To check for wear and ensure proper contact, preventing sparking and maintaining efficient power generation

A) To ensure the generator runs faster

C) To increase the generator's power output

6 / 7

What is the purpose of performing insulation resistance tests on an a.c. generator set during routine maintenance?

C) To check the oil level in the engine

D) To measure the frequency of the generator

B) To detect any deterioration or damage to the insulation of the generator’s windings, which could lead to electrical faults or failures

A) To measure the generator’s voltage output

7 / 7

Which of the following is an essential routine maintenance task for the electrical side of an a.c. generator set?

D) Changing the engine oil

B) Inspecting and cleaning the generator’s air filters

A) Checking the coolant level in the engine

C) Inspecting and tightening all electrical connections to ensure they are secure and free from corrosion

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