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Fuselage Fix – Rewriting the Book with 787 Repairs?
2.
Overcoming Propeller Imbalance
3.
Nondestructive Testing, Then, Now and in the Future
4.
Battlefield to the Boardroom: The Black Hawk is Re-Deployed
5.
Use Your Eyes
6.
In Search of the Holy Grail
7.
Navigating the Grey Areas of Ethics for Mechanics
8.
Heavy Maintenance Tracking the Trend
9.
Russian MRO Industry on Verge of Big Changes
10.
FAA-Industry Workshop Ponders Event Reports for Maintenance SMS
11.
Maintenance and Fatigue: A Way of Life
12.
Systems Integration Drives Last 25 Years of Avionics
13.
Gulfstream Becomes an Icon
14.
Customer Considerations Propel SMS
15.
Whole Lot of Sanding Going On
16.
Mechanic Input Crucial to Success of SMS Programs
17.
Liability Insurance and the Maintenance Industry
18.
Time is Money
19.
We Make House Calls
20.
Regional Aircraft MRO: Playing for Position
21.
Always Responsible
22.
Flight Path Toward a New Avgas
23.
A Look at Internal Combustion Engine Oil and Additives
24.
Safety Begins on the Ground
25.
Ergonomics: Just a Big Word or Is There Real Benefit?
26.
Advances in Engine Reliability Mean Greater Importance for Preventive Maintenance
27.
The Ultimate Appeal: The Consistency and Standardization Initiative
28.
Now Hiring
29.
Russian MRO Industry May Be on Verge of Serious Crisis
30.
Avionics Industry Ready to Meet ADS-B Mandate
31.
Diesel Engine Maintenance
32.
Looming Business in Civilian Drones
33.
Plight of the Contour
34.
The Business of Maintaining a Business Aircraft
35.
Military Maintainers Adapt to New Realities
36.
An International Perspective on Human Factors Challenges
37.
Hangar Rash: Key Steps to Prevention
38.
Textron Aviation Commits to Service
39.
The Time is Right: Electronic Tool Monitoring and Control Systems
40.
Business Aviation Supporting the Maintenance Function
41.
Management Strategies: Focus on Aftermarket Services
42.
The Aircraft Harvest: How to Profit From Aircraft Retirement
43.
A New MRO Player Emerges
44.
Communications for Maintenance Managers
45.
Propeller Imbalance is a problem on all turboprop aircraft.
A.
True
B.
False
Correct Answer
A. True
Explanation Propeller imbalance is a common issue that affects all turboprop aircraft. This problem occurs when the propeller blades are not evenly weighted, causing vibrations and potential damage to the aircraft. To ensure safe and efficient operation, it is necessary to regularly inspect and balance the propellers. Therefore, the statement that propeller imbalance is a problem on all turboprop aircraft is true.
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46.
Propeller imbalance leads to excessive vibration which can cause:
A.
Structural failure
B.
High fuel consumption
C.
Passenger discomfort
D.
All of the above
Correct Answer
D. All of the above
Explanation Propeller imbalance can lead to excessive vibration, which in turn can cause structural failure, high fuel consumption, and passenger discomfort. The vibration caused by propeller imbalance puts stress on the aircraft's structure, potentially leading to structural failure. Additionally, the vibration can increase drag and resistance, resulting in higher fuel consumption. Lastly, the vibrations can also cause discomfort for passengers, making the flight experience unpleasant. Therefore, all of the mentioned consequences can occur due to propeller imbalance.
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47.
Engine failure due to vibration or fatigue can cause an aborted flight or accident.
A.
True
B.
False
Correct Answer
A. True
Explanation Engine failure due to vibration or fatigue can indeed cause an aborted flight or accident. Vibration or fatigue in an engine can lead to mechanical stress and damage, which can ultimately result in the engine failing during flight. This can be extremely dangerous and may necessitate an immediate halt to the flight or even lead to an accident if the engine fails completely. Therefore, the statement is true.
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48.
The in-flight propeller balancing system (IPBS) continuously and actively balances propellers during flight operation.
A.
True
B.
False
Correct Answer
A. True
Explanation The statement suggests that the in-flight propeller balancing system (IPBS) is designed to continuously and actively balance propellers while the aircraft is in flight. This means that the system is capable of making adjustments and corrections to ensure that the propellers remain balanced and functioning optimally throughout the duration of the flight. Therefore, the correct answer is True.
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49.
The IPBS has _________ balancing device per propeller.
A.
Four
B.
Two
C.
One
D.
Three
Correct Answer
C. One
Explanation The IPBS has one balancing device per propeller. This suggests that there is only a single device used to balance each propeller, indicating that the IPBS system is designed to have a minimal number of balancing devices for efficiency and simplicity.
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50.
When the IPBS senses a propeller imbalance the propeller is then brought back into balance by:
A.
Sensor inputs
B.
Hydraulic pressure
C.
Centrifugal force
D.
Magnets
Correct Answer
D. Magnets
Explanation Magnets can be used to bring the propeller back into balance when the IPBS (Integrated Propeller Balancing System) senses a propeller imbalance. Magnets have the ability to attract or repel objects, and in this case, they can be strategically placed to counteract the imbalance in the propeller. By adjusting the position of the magnets, the propeller can be balanced and the vibrations caused by the imbalance can be minimized or eliminated.
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