Trivia Facts Quiz On Aircraft Electrical Systems And Engine!
Welcome to the Trivia Facts Quiz on Aircraft Electrical Systems and Engine. Do you consider yourself quite knowledgeable when it comes to the maintenance of an aircraft? If an aircraft is not up to operating to its full potential, it can be disastrous. Well, the quiz below is perfect for seeing just how much you about maintaining an aircraft. All the best!
- 1.
A heavy criss-cross wear pattern on the groove of the pulley is due to
- A.
Excessive cable tension
- B.
Pulley too big for the cable diameter
- C.
Jammed pulley
Correct Answer
A. Excessive cable tensionExplanation
A heavy criss-cross wear pattern on the groove of the pulley is likely due to excessive cable tension. When the tension on the cable is too high, it can cause the cable to rub against the sides of the pulley groove, leading to wear marks in a criss-cross pattern. This excessive tension can occur due to various reasons such as incorrect setup or adjustments, improper maintenance, or the use of a cable that is too strong for the application.Rate this question:
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- 2.
Screw used in the standard aeronautical screw threads are
- A.
B4 screw and American standard
- B.
Metric thread of 60 degree
- C.
American NC threads are also called unified threads
Correct Answer
B. Metric thread of 60 degreeExplanation
The correct answer is "Metric thread of 60 degree". This is because aeronautical screw threads typically use metric threads that have a 60-degree angle. The B4 screw and American standard are not specifically mentioned in relation to aeronautical screw threads, and the American NC threads, although related to aeronautics, are not specifically mentioned in the given information. Therefore, the metric thread of 60 degrees is the most accurate and relevant answer based on the information provided.Rate this question:
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- 3.
For an aircraft with a hydraulic system that operates above 3000psi, the fluid line is most likely to be
- A.
Pure aluminum tubing
- B.
Stainless steel tubing
- C.
Aluminum alloy tubing
Correct Answer
B. Stainless steel tubingExplanation
For an aircraft with a hydraulic system that operates above 3000psi, stainless steel tubing is the most likely choice for the fluid line. Stainless steel is known for its high strength and corrosion resistance, making it suitable for handling high-pressure fluids. It can withstand the high pressures and stresses associated with the hydraulic system, ensuring the safety and reliability of the aircraft. Pure aluminum tubing may not have sufficient strength to handle such high pressures, while aluminum alloy tubing may not provide the same level of corrosion resistance as stainless steel.Rate this question:
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- 4.
One complete revolution of a single start thread will give the lead of the shaft equal to
- A.
Half the pitch
- B.
Pitch
- C.
2 times pitch
Correct Answer
B. PitchExplanation
The lead of a shaft is the distance the shaft moves axially in one complete revolution. In a single start thread, there is only one thread wrapped around the shaft, so one complete revolution of the thread will move the shaft by the distance equal to the pitch of the thread. Therefore, the lead of the shaft will be equal to the pitch.Rate this question:
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- 5.
Which of the following most closely resemble Inconel?
- A.
High carbon steel
- B.
Stainless steel
- C.
Aluminum alloy
Correct Answer
B. Stainless steelExplanation
Inconel is a type of nickel-chromium-based alloy known for its high resistance to corrosion and heat. Stainless steel is also a corrosion-resistant alloy that contains chromium, making it the closest resemblance to Inconel among the given options. High carbon steel and aluminum alloy do not possess the same level of corrosion resistance and heat resistance as Inconel and stainless steel.Rate this question:
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- 6.
The length of the rivet is the:-
- A.
Total length of countersunk rivet
- B.
Length between the flat end to the top of the universal head
- C.
The length of the shank
Correct Answer
A. Total length of countersunk rivetExplanation
The correct answer is the total length of countersunk rivet. This means that the length of the rivet includes both the shank and the countersunk head. The countersunk head is designed to sit flush with the surface it is being riveted to, so it is important to consider its length when determining the overall length of the rivet.Rate this question:
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- 7.
The wrap direction of the top layer of fabric of a composite structure that requires repair is typically found by
- A.
Determine the direction of the edge of the fabric
- B.
Refer to the structure repair manual
- C.
Using the wrap compass
Correct Answer
B. Refer to the structure repair manualExplanation
The correct answer is to refer to the structure repair manual. This is because the manual will provide specific instructions and guidelines on how to determine the wrap direction of the top layer of fabric for a composite structure that requires repair. The manual will likely have detailed diagrams, illustrations, or step-by-step instructions that can be followed to accurately determine the wrap direction.Rate this question:
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- 8.
Chromium-Molybdenum material is used on
- A.
Landing gear and engine mount
- B.
Bolts and nuts
- C.
Firewall panels
Correct Answer
A. Landing gear and engine mountExplanation
Chromium-Molybdenum material is used on landing gear and engine mount because it provides excellent strength, toughness, and resistance to corrosion. These components of an aircraft are subjected to high stress and extreme conditions, so using this material ensures their durability and reliability. Additionally, the use of Chromium-Molybdenum helps to maintain the structural integrity and safety of the aircraft during takeoff, landing, and in-flight operations.Rate this question:
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- 9.
Anodic oxidation is applied to parts made of
- A.
Aluminum alloy
- B.
Non-stainless steel
- C.
Stainless steel
Correct Answer
A. Aluminum alloyExplanation
Anodic oxidation is a process used to enhance the corrosion resistance and durability of metal surfaces. It involves creating a protective oxide layer on the surface of the metal through an electrochemical reaction. Aluminum alloy is a commonly used material for anodic oxidation because it forms a dense and stable oxide layer that provides excellent corrosion resistance. On the other hand, non-stainless steel and stainless steel do not typically undergo anodic oxidation as they already have their own inherent corrosion resistance properties.Rate this question:
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- 10.
Which one of the following aluminum alloy is most brittle?
- A.
2017 aluminum alloy
- B.
Cast aluminum
- C.
2024 aluminum
Correct Answer
B. Cast aluminumExplanation
Cast aluminum is the most brittle among the given options. This is because cast aluminum is formed by pouring molten aluminum into a mold, which results in a less uniform and more porous structure compared to other aluminum alloys. The presence of these pores weakens the material and makes it more prone to cracking and breaking under stress. On the other hand, 2017 aluminum alloy and 2024 aluminum are both stronger and less brittle due to their different compositions and manufacturing processes.Rate this question:
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- 11.
Locking wire should not go through the inspection hole
- A.
At the middle of the turn barrel
- B.
At the end of push pull rod
- C.
At the end of the eye bolt
Correct Answer
B. At the end of push pull rodExplanation
The correct answer is at the end of the push pull rod. This is because the locking wire should not go through the inspection hole at the end of the push pull rod. The inspection hole is likely used for checking the condition or alignment of the push pull rod, and inserting the locking wire through it could interfere with its function or cause damage. Therefore, it is important to avoid inserting the locking wire through this particular inspection hole.Rate this question:
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- 12.
Alcad is a layer of pure aluminum rolled on the surface of heated aluminum alloy metal. The total thickness allowable is
- A.
Maximum 5% of the base material thickness
- B.
5% to 10% of the base material thickness
- C.
More than 20% of the base material thickness
Correct Answer
A. Maximum 5% of the base material thicknessExplanation
Alcad is a layer of pure aluminum rolled on the surface of heated aluminum alloy metal. The given answer states that the total thickness allowable for Alcad is maximum 5% of the base material thickness. This means that the layer of pure aluminum should not exceed 5% of the thickness of the underlying aluminum alloy metal. Any thickness greater than 5% would not be within the allowable limits for Alcad.Rate this question:
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- 13.
Selection of engine valve spring should consider its material
- A.
Tensile strength
- B.
Torsion strength
- C.
Fatigue strength
Correct Answer
C. Fatigue strengthExplanation
The selection of an engine valve spring should consider its fatigue strength. This is because the valve spring undergoes repeated cycles of compression and expansion, which can lead to fatigue failure over time. Fatigue strength refers to the ability of a material to withstand these repeated cycles without experiencing failure. Therefore, choosing a valve spring with a high fatigue strength is essential to ensure its longevity and prevent premature failure in the engine.Rate this question:
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- 14.
The primary alloying element of 2024 Aluminum alloy is
- A.
Zinc
- B.
Copper
- C.
Magnesium
Correct Answer
B. CopperExplanation
The primary alloying element of 2024 Aluminum alloy is copper. Copper is added to aluminum to enhance its strength and hardness. It also improves the alloy's resistance to corrosion and provides good machinability. The addition of copper in 2024 Aluminum alloy allows it to have high strength-to-weight ratio, making it suitable for applications that require lightweight but strong materials, such as aerospace components and structural materials.Rate this question:
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- 15.
Aircraft under high-temperature climate condition will cause
- A.
No effect on cable tension
- B.
Increase in cable tension
Correct Answer
B. Increase in cable tensionExplanation
In high-temperature climate conditions, the heat can cause the cables in the aircraft to expand. As the cables expand, they will exert more force and tension, leading to an increase in cable tension. This increase in tension is a result of the thermal expansion of the cables due to the high temperature, and it can have an impact on the overall performance and safety of the aircraft.Rate this question:
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- 16.
Electrical cable used to connect radio and high frequency equipment is
- A.
Co-axial cable
- B.
Single strand cable
- C.
Multistrands cable
Correct Answer
A. Co-axial cableExplanation
Coaxial cable is the correct answer because it is specifically designed to transmit radio frequency signals with minimal interference and loss. It consists of a central conductor surrounded by an insulating layer, a metallic shield, and an outer insulating layer. This construction allows for efficient transmission of high frequency signals without external interference. Single strand cable and multistrand cables are not suitable for connecting radio and high frequency equipment as they do not provide the same level of signal integrity and shielding.Rate this question:
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- 17.
Acceptable check to confirm delamination of composite material is
- A.
Visual and coin tap
- B.
Coin tap method if no fault found, followed by ultrasonic test
- C.
Coin tap and ultrasonic test
Correct Answer
B. Coin tap method if no fault found, followed by ultrasonic testExplanation
The acceptable check to confirm delamination of a composite material is to first use the coin tap method. If no fault is found during the coin tap, then it is followed by an ultrasonic test. This means that if the coin tap does not reveal any delamination, the ultrasonic test is used as a further confirmation to ensure there are no hidden faults or delamination within the material.Rate this question:
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- 18.
Proper crimping of electrical wires using lug
- A.
Should have at least the same strength as the wire
- B.
Should have the same tensile strength
- C.
Should have good shear strength
Correct Answer
A. Should have at least the same strength as the wireExplanation
The crimping of electrical wires using a lug should have at least the same strength as the wire to ensure a secure and reliable connection. If the crimping is weaker than the wire, it may result in a loose connection or potential failure, leading to electrical hazards or malfunctions. Therefore, it is crucial to ensure that the crimping has the same strength or higher to maintain the integrity and safety of the electrical system.Rate this question:
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- 19.
Acrylic plastic can be damaged by
- A.
Cleaning solvent
- B.
Sunlight
- C.
Temperature of 50 degree Celsius
Correct Answer
A. Cleaning solventExplanation
Acrylic plastic can be damaged by cleaning solvent because certain solvents contain chemicals that can react with the acrylic material, causing it to become discolored, cracked, or even dissolve. Acrylic is a sensitive material that requires gentle cleaning methods, and using harsh solvents can lead to irreversible damage. It is important to use mild cleaning solutions specifically designed for acrylic surfaces to avoid any potential harm.Rate this question:
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- 20.
Blind rivet can be replaced by solid shank rivet
- A.
Only if allowed by the repair scheme
- B.
Only when blind rivets are out of stock
- C.
Technician can use their experience
Correct Answer
A. Only if allowed by the repair schemeExplanation
The correct answer is "only if allowed by the repair scheme." This means that blind rivets can only be replaced by solid shank rivets if the repair scheme, which outlines the approved methods and materials for repairs, allows for it. The repair scheme is a set of guidelines and instructions that technicians must follow when conducting repairs, and it determines what alternatives can be used in specific situations. Therefore, the decision to replace blind rivets with solid shank rivets must be based on the approval of the repair scheme.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
ProProfs Editorial Team -
Sep 29, 2009Quiz Created by
Cyberedward
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