Question 1

Some wind turbine manufacturers locate the power conversion system and step up transformers within the nacelle.

Accepted Answer

Some wind turbine manufacturers do indeed locate the power conversion system and step up transformers within the nacelle. This approach can result in more efficient energy conversion and reduce the need for external infrastructure like substations.

Question 2

The term &#34;Yaw&#34; refers to motion about the horizontal axis of the tower.

Accepted Answer

"Yaw" refers to the rotation of an aircraft, ship, or vehicle around its vertical axis, not the horizontal axis.

Question 3

Inspection of the yaw drive units may include: addition of gear oil, checking mounting hardware, and ________.&#10;A) checking for leaks&#10;B) adjusting motor brake disk clearance&#10;C) cleaning the assembly&#10;D) All answers are correct

Accepted Answer

All of the options are commonly performed during inspections of yaw drive units. Checking for leaks ensures that gear oil is not escaping and causing damage. Checking mounting hardware ensures that the unit is secure and operating safely. Cleaning the assembly can help identify any potential issues or weaknesses. Adjusting motor brake disk clearance helps to maintain optimal performance.

Question 4

The bedplate assembly is the main structural support within the nacelle.

Accepted Answer

The bedplate assembly is indeed the main structural support within the nacelle.

Question 5

The machine head includes components such as the generator, drive train, yaw drive, and nacelle assembly.

Accepted Answer

The machine head includes all of these components.

Question 6

Visual inspection of the yaw drive sytem may include noting oil levels, checking wire connections, and a torque test of mounting fasteners.

Accepted Answer

Visual inspection of the yaw drive system may include noting oil levels, checking wire connections, and a torque test of mounting fasteners.

Question 7

Maintenance activities within the wind turbine machine head may include: lubricating the yaw ring gear, inspection of the yaw drive units, and ____________.&#10;A) washing the blades&#10;B) painting the tower&#10;C) tensioning foundation bolts&#10;D) None of the answers are correct

Accepted Answer

Maintenance activities within the wind turbine machine head are focused on components located in the nacelle or hub area, such as the yaw system. Washing blades, painting the tower, and tensioning foundation bolts are maintenance activities, but they are not performed within the machine head.

Question 8

Disposing of waste lubricant around the tower foundation after a maintenance activity is an acceptable procedure.

Accepted Answer

Disposing of waste lubricant around the tower foundation can harm the environment and is not an acceptable procedure. Proper disposal methods should be followed to prevent pollution and damage to the ecosystem.

Question 9

Processes used to fabricate the bed plate assembly include: casting and _________.&#10;A) bolting&#10;B) welding&#10;C) machining&#10;D) All answers are correct

Accepted Answer

The bed plate assembly is typically fabricated using a combination of processes including casting, bolting, welding, and machining to ensure structural integrity and proper assembly.

Question 10

It is not necessary to review the MSDS of a new chemical before it is used on the job.

Accepted Answer

It is important to review the MSDS (Material Safety Data Sheet) of a new chemical before it is used on the job. The MSDS provides important information about the safe handling, storage, and disposal of the chemical, as well as potential hazards and first aid measures. Failing to review the MSDS can put workers at risk of injury or illness.

Question 11

Yaw brake designs fall into two catagories: hydraulic and active.

Accepted Answer

The answer of Yaw brake designs fall into two catagories:...

Question 12

The passive yaw brake plungers should always be torqued to their final level in a sequential pattern after inspection.

Accepted Answer

The answer of The passive yaw brake plungers should always...

Question 13

Documenting each activity during a PM cycle provides proof the activity was completed and ensure steps are not missed.

Accepted Answer

The answer of Documenting each activity during a PM cycle...

Question 14

Non-destructive test methods may include: magnetic particle, visual, and ________.&#10;A) dye penetrant&#10;B) insulation resistance&#10;C) Thermography&#10;D) All answers are correct

Accepted Answer

The answer of Non-destructive test methods may include: magnetic particle,...

Question 15

Inspection and maintenance of the power conversion system may include: clean cabinet surfaces, tighten cable connections, and ____________.&#10;A) replace hoses&#10;B) tighten hose clamps&#10;C) LOTO procedure&#10;D) All answers are correct

Accepted Answer

The answer of Inspection and maintenance of the power conversion...

Deck 11: Machine Head