M7 Part 5 (Final)
M7 part 5 final
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Questions and Answers
- 1.
Secondary bonding has maximum resistance of
- A.
1 ohm
- B.
10 ohm
- C.
0.05 ohm
Correct Answer
A. 1 ohmExplanation
Secondary bonding refers to the weak intermolecular forces between molecules or atoms. These forces are relatively weaker compared to primary bonding (ionic, covalent, or metallic bonding). As a result, secondary bonding has a maximum resistance of 1 ohm, which is higher than the other options provided (10 ohm and 0.05 ohm).Rate this question:
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- 2.
Important precaution for refueling
- A.
APU is switched off
- B.
No passenger on board
- C.
Fueling browser is grounded to aircraft
Correct Answer
C. Fueling browser is grounded to aircraftExplanation
The important precaution for refueling is to ground the fueling browser to the aircraft. This is necessary to prevent any static electricity buildup that could potentially cause a fire or explosion during refueling. Grounding the fueling browser ensures that any static charges are safely discharged, reducing the risk of accidents. Switching off the APU and ensuring no passengers are on board are also important precautions, but the grounding of the fueling browser is the most crucial step in ensuring safety during refueling.Rate this question:
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- 3.
Mark the correct statement
- A.
Brazing temperature > Welding temperature
- B.
Soldering temperature > Welding temperature
- C.
Brazing temperature > Soldering temperature
Correct Answer
C. Brazing temperature > Soldering temperatureExplanation
Brazing temperature is higher than soldering temperature because brazing involves joining two metal pieces by melting a filler metal that has a higher melting point than the base metals being joined. Soldering, on the other hand, uses a lower melting point filler metal to join the metals. Therefore, brazing requires a higher temperature than soldering.Rate this question:
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- 4.
A technician troubleshooting an oil leaking a constant speed unit would find the unit’s principle of operation in a
- A.
Logical flow chart
- B.
Block diagram
- C.
Schematic diagram
Correct Answer
C. Schematic diagramExplanation
A schematic diagram would provide a visual representation of the components and connections within the constant speed unit, allowing the technician to understand the principle of operation. It would show the electrical and mechanical components, their interconnections, and how they function together. By studying the schematic diagram, the technician can identify any faulty components or connections that may be causing the oil leak and take appropriate troubleshooting measures.Rate this question:
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- 5.
The amount of electrical current that a wire can conduct depends on
- A.
The length of wire
- B.
The insulation of wire
- C.
The cross-sectional area of the wire
Correct Answer
C. The cross-sectional area of the wireExplanation
The cross-sectional area of the wire determines the amount of electrical current it can conduct. A larger cross-sectional area allows for more space for the flow of electrons, resulting in a greater current-carrying capacity. Conversely, a smaller cross-sectional area restricts the flow of electrons, reducing the amount of current that can pass through the wire. Therefore, the cross-sectional area of the wire is a crucial factor in determining its conductivity.Rate this question:
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- 6.
Zinc chromate primer controls corrosion by
- A.
Releasing chromate ions on to the surface of the metal
- B.
Completely excluding water from the base metal
- C.
Reacting with the aluminium to form a protective chrome aluminium plating
Correct Answer
A. Releasing chromate ions on to the surface of the metalExplanation
Zinc chromate primer controls corrosion by releasing chromate ions on to the surface of the metal. These chromate ions form a protective layer that inhibits the corrosion process by preventing the metal from coming into contact with corrosive agents such as water or oxygen. This layer acts as a barrier, preventing the metal from undergoing oxidation and degradation.Rate this question:
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- 7.
Smooth depression on wheel bearing cup
- A.
Spalling mark
- B.
Gall mark
- C.
Brinelling mark
Correct Answer
C. Brinelling markExplanation
A Brinelling mark refers to a form of damage caused by excessive load or impact on a bearing cup. It appears as a smooth depression on the surface and is typically caused by a heavy object or force being applied to the bearing cup. This can result in permanent deformation of the metal, leading to reduced bearing performance and potential failure.Rate this question:
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- 8.
When storing gas cylinder
- A.
All compressed gas cylinders must be stored on the upright position.
- B.
Those containing oxygen and combustible gas should not be stored together.
- C.
Those containing acetylene must be stored in the horizontal position.
Correct Answer
B. Those containing oxygen and combustible gas should not be stored together.Explanation
The reason why oxygen and combustible gas cylinders should not be stored together is because oxygen supports combustion, making it highly flammable. If oxygen comes into contact with a combustible gas, it can accelerate the combustion process and potentially lead to a fire or explosion. Therefore, it is important to store these two types of cylinders separately to minimize the risk of accidents.Rate this question:
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- 9.
Defueling an aircraft must be carried out
- A.
Outside a hanger where there are no fire hazards
- B.
In a hanger where there is no wing or fire hazards
- C.
Into clean drums but never straight into a fuel truck
Correct Answer
A. Outside a hanger where there are no fire hazardsExplanation
Defueling an aircraft must be carried out outside a hangar where there are no fire hazards because it is a safety precaution. Fueling or defueling an aircraft involves handling flammable materials, and it is essential to minimize the risk of fire. Conducting the process outside reduces the chances of accidental ignition or the spread of fire in case of a mishap. Additionally, ensuring that there are no fire hazards nearby further enhances safety by eliminating potential sources of ignition.Rate this question:
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- 10.
After removing a rivet the hole should be
- A.
Deburred
- B.
Enlarged
- C.
Checked for its limits
Correct Answer
C. Checked for its limitsExplanation
After removing a rivet, it is important to check the hole for its limits. This means ensuring that the hole is still within the specified dimensions and tolerances. Checking for limits ensures that the hole is not too large or too small, which could affect the proper fitting and function of a new rivet or fastener. This step is necessary to maintain the structural integrity and safety of the assembly.Rate this question:
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- 11.
Unless otherwise specified, when usually joining component using nut and bolt is fitted
- A.
Head forward, inboard and upward
- B.
Nut forward, inboard and upward
- C.
In the direction that is least likely to damage component and the bolt during installation.
Correct Answer
A. Head forward, inboard and upwardExplanation
When joining components using a nut and bolt, it is usually fitted with the head forward, inboard, and upward. This positioning ensures that the bolt is inserted into the component in a way that is least likely to cause damage during installation. Placing the head forward allows for easier access and visibility, while positioning it inboard and upward helps to prevent interference with other components or structures. This orientation ensures a secure and efficient assembly process.Rate this question:
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- 12.
Which type of clamp should be use to support hydraulic lines?
- A.
Plain clamp
- B.
Rubber cushioned clamp
- C.
Teflon cushioned clamp
Correct Answer
B. Rubber cushioned clampExplanation
Rubber cushioned clamps should be used to support hydraulic lines because they provide insulation and protection against vibrations and excessive movement. The rubber cushioning helps to absorb shocks and prevent damage to the hydraulic lines caused by friction or rubbing against other surfaces. This type of clamp also helps to reduce noise and ensures a secure and stable installation of the hydraulic lines.Rate this question:
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- 13.
To remove the ice accumulated on aircraft and gives it a long hold period
- A.
Cold Type 1 FPD de-ice follow by heated water missed anti-ice may be used.
- B.
Cold Type 2 FPD de-ice follow by Type 1 cold FPD.
- C.
Heated Type 1 FPD de-ice follow by Type 2 FPD mixed with water.
Correct Answer
C. Heated Type 1 FPD de-ice follow by Type 2 FPD mixed with water.Explanation
The correct answer is "Heated Type 1 FPD de-ice followed by Type 2 FPD mixed with water." This combination of de-icing and anti-icing methods is effective in removing ice from the aircraft and providing a long hold period. The heated Type 1 FPD de-ice helps to melt the ice that has accumulated on the aircraft, while the Type 2 FPD mixed with water provides a protective coating to prevent further ice formation. This combination ensures that the aircraft remains ice-free for an extended period of time.Rate this question:
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- 14.
The bit of common soldering iron is made up of
- A.
Copper
- B.
Cast iron
- C.
Mild Steel
Correct Answer
A. CopperExplanation
The bit of a common soldering iron is made up of copper because copper is an excellent conductor of heat. This allows the soldering iron to quickly and efficiently transfer heat to the solder, melting it and creating a strong bond between the components being soldered. Copper also has good corrosion resistance, which helps to prolong the lifespan of the soldering iron bit.Rate this question:
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- 15.
In reaction riveting a suitable snap (or set) is
- A.
Held against the rivet shank
- B.
Held in the riveting gun
- C.
Used as backup block
Correct Answer
B. Held in the riveting gunExplanation
In reaction riveting, a suitable snap or set is held in the riveting gun. This is because the riveting gun is the tool used to drive the rivet into the workpiece, and the snap or set is the part of the gun that contacts the rivet. By holding the snap or set in the riveting gun, it allows for precise control and force application during the riveting process.Rate this question:
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- 16.
A control chain articulation check can be achieved by:
- A.
Running the chain over a 2 inches diameter dovel and ensuring smooth engagement
- B.
Running the chain over a 4 inches diameter dovel and ensuring smooth engagement.
- C.
Rawing the chain over a finger to ensure each link moves freely at 180 degrees.
Correct Answer
B. Running the chain over a 4 inches diameter dovel and ensuring smooth engagement. -
- 17.
Swaging is an operation in which a metallic end fitting is secured to the end of a cable
- A.
Plastic deformation
- B.
Soldering
- C.
Brazing
Correct Answer
A. Plastic deformationExplanation
The correct answer is plastic deformation because swaging involves reshaping or forming the end of a cable by applying pressure or force, causing the material to undergo plastic deformation. This process permanently changes the shape of the material without melting or joining it with another material, making plastic deformation the most suitable explanation for the given operation of swaging. Soldering and brazing involve joining two or more materials using heat and a filler metal, which do not align with the description of swaging.Rate this question:
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- 18.
Thermocouple-type measures
- A.
High frequency
- B.
Very high frequency
- C.
Ultra high frequency
Correct Answer
B. Very high frequencyExplanation
The term "thermocouple-type measures" refers to a type of temperature measurement using a thermocouple. Thermocouples are devices that generate a voltage proportional to the temperature difference between two points. The options given, "high frequency," "very high frequency," and "ultra high frequency," are not related to thermocouples or temperature measurement. Therefore, the correct answer is "Very high frequency."Rate this question:
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- 19.
Grinding wheel is recondition by
- A.
Sharpening
- B.
Polishing
- C.
Dressing
Correct Answer
C. DressingExplanation
The correct answer is "Dressing". Dressing is the process of removing the dull and worn-out abrasive grains from the surface of the grinding wheel, exposing fresh and sharp grains. This is done to maintain the shape and cutting ability of the wheel, ensuring its effectiveness in grinding operations. Sharpening refers to the process of making the edge of the wheel sharper, while polishing involves giving a smooth and shiny finish to the workpiece. However, in the context of reconditioning a grinding wheel, dressing is the most appropriate option.Rate this question:
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- 20.
____ tap used to cut full thread to the bottom of blind hole.
- A.
Bottoming
- B.
Plug
- C.
Taper
Correct Answer
A. BottomingExplanation
A bottoming tap is used to cut a full thread to the bottom of a blind hole. Unlike a taper tap, which gradually tapers towards the end, a bottoming tap has a shorter chamfer and is designed to cut threads all the way to the bottom of the hole. This type of tap is used when a complete thread is needed in a blind hole, where the tap cannot pass through the other side. The bottoming tap ensures that the thread is cut to the desired depth, allowing for a secure and tight fit when a screw or bolt is inserted.Rate this question:
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Mar 21, 2023Quiz Edited by
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Sep 30, 2009Quiz Created by
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