Worksheets701-800
Total questions: 100
Worksheet time: 50mins
Name
Class
Date
1.
701. Which type of resin is not currently utilized on composite structures? (Level 2)
a)
a) Epoxy resins
b)
b) Thermoplastic resins
c)
c) Phenolic resins
2.
702. Which factors have a positive effect on surface wetting? (Level 1)
a)
a) Removal of surface contamination, Viscosity reduction through application of heat, Time and pressure at the bonding point.
b)
b) Fingerprints left on adherent surfaces, Residues not removed from the adherent surfaces, Low temperatures, Incorrect or no surface pre-treatment.
c)
c) Removal of surface contamination, Time and pressure at the bonding point, Low temperatures
3.
703. Which factors have a negative effect on surface wetting? (Level 1)
a)
a) Removal of surface contamination, Viscosity reduction through application of heat, Time and pressure at the bonding point.
b)
b) Fingerprints left on adherent surfaces, Residues not removed from the adherent surfaces, Low temperatures, Incorrect or no surface pre-treatment.
c)
c) Removal of surface contamination, Time and pressure at the bonding point, Low temperatures
4.
704. Which type of damage is a skin not-perforated damage? (Level 2)
a)
a) Abrasion, Lightning strike, Delamination, Scratches, Dents, Holes, Gouges
b)
b) Abrasion, Debonding, Delamination, Nicks, Dents, Holes, Gouges
c)
c) Abrasion, Debonding, Delamination, Nicks, Dents, Gouges, Scratches
5.
705. Which type of damage is a skin perforated damage (with damage of fibres)? (Level 2)
a)
a) Abrasion, Delamination, Scratches, Dents, Gouges
b)
b) Holes, Lightning strike, Impact by foreign object (FOD)
c)
c) Abrasion, Debonding, Delamination, Nicks, Dents, Gouges, Scratches
6.
706. Which of the following statements is correct about Scratch damage? (Level 1)
a)
a) Scratch is damage to a surface caused by scuffing, rubbing or scraping of the component. Fibres are not damaged and mechanical performance is not affected.
b)
b) Scratch is when a separation of materials, e.g. stringer to skin, occurs due to an adhesive failure
c)
c) Scratch is the result of contact with a sharp object and only surface fibres are affected and the edges are sharp
7.
707. Which of the following statements is correct about Abrasion damage? (Level 1)
a)
a) Abrasion is damage to a surface caused by scuffing, rubbing or scraping of the component. Fibres are not damaged and mechanical performance is not affected.
b)
b) Abrasion is when a separation of materials, e.g. stringer to skin, occurs due to an adhesive failure
c)
c) Abrasion is the result of contact with a sharp object and only surface fibres are affected and the edges are sharp
8.
708. Which of the following statements is correct about Debonding damage? (Level 2)
a)
a) Debonding is damage to a surface caused by scuffing, rubbing or scraping of the component. Fibres are not damaged and mechanical performance is not affected.
b)
b) Debonding is when a separation of materials, e.g. stringer to skin, occurs due to an adhesive failure
c)
c) Debonding is the result of contact with a sharp object and only surface fibres are affected and the edges are sharp
9.
709. Which of the following statements is correct about Lightning Strike damage? (Level 1)
a)
a) The effect of a lightning strike depends on the material will not be the same. For non-conductive materials like Glass- and Aramid Fibre a large part of the component, if not completely protected, may be blown out because both skins are affected and the core generally vapourised due to the extreme heat
b)
b) Lightning strike is when a separation of materials, e.g. stringer to skin, occurs due to an adhesive failure
c)
c) Lightning strike is when the separation of plies occurs in a multi-laminate material. This can be caused by the material being hit (impact delamination), or when there is a resin failure for any other reason.
10.
710. Which of the following statements is correct about Delamination damage? (Level 2)
a)
a) Delamination is a deformity caused by extraneous forces, which are applied to the structure. This can be an impact (FOD) for example.
b)
b) Delamination is when a separation of materials, e.g. stringer to skin, occurs due to an adhesive failure
c)
c) Delamination is when the separation of plies occurs in a multi-laminate material. This can be caused by the material being hit (impact delamination), or when there is a resin failure for any other reason.
11.
711. Which of the following statements is correct about Dent damage? (Level 1)
a)
a) A dent is a deformity caused by extraneous forces, which are applied to the structure. This can be an impact (FOD) for example.
b)
b) A dent is when a separation of materials, e.g. stringer to skin, occurs due to an adhesive failure
c)
c) A dent is when the separation of plies occurs in a multi-laminate material. This can be caused by the material being hit (impact delamination), or when there is a resin failure for any other reason.
12.
712. Which of the following statements is correct about Erosion damage? (Level 1)
a)
a) Erosion is the result of contact with a sharp object and only surface fibres are affected and the edges are sharp.
b)
b) Erosion could affect all the leading edge surfaces, especially when the initial surface protection system has been damaged. Erosion, when undetected or unrepaired, may generate composite deterioration.
c)
c) Erosion principally affects the resin and is generally due to accidental contact with aggressive chemical liquids or products (e.g. hydraulic fluid).
13.
713. Which of the following statements is correct about Chemical Degradation damage? (Level 2)
a)
a) Chemical degradation is the result of contact with a sharp object, only surface fibres are affected and the edges are sharp.
b)
b) Chemical degradation could affect all the leading edge surfaces. Chemical degradation, when undetected or unrepaired, may generate composite deterioration.
c)
c) Chemical degradation principally affects the resin and is generally due to accidental contact with aggressive chemical liquids or products (e.g. hydraulic fluid).
14.
714. What testing methods can detect the presence of debonding and delamination damages? (Level 2)
a)
a) Tap Testing, Visual or optical inspection
b)
b) Tap Testing, Ultrasonics
c)
c) Penetrant, Ultrasonics
15.
715. Which of the following statements is correct about Tap testing? (Level 1)
a)
a) Tap testing is only capable of finding flaws that are evident on the visible surface. Internal flaws in composites (such as delamination, disbonding and matrix crazing) are not detectable. In addition, tight surface cracks and edge delamination may not be detectable.
b)
b) Tap testing is extremely sensitive in measuring small surface defects. The part to be inspected is stressed by the application of heat, a static load or vibration to bring out the effect of the flaw on the surface displacement
c)
c) Tap testing is widely used for the quick evaluation of any accessible aircraft surfaces to detect presence of debonding or entrapped water.
16.
716. Which of the following statements is correct about Radiography testing? (Level 2)
a)
a) Radiography is only capable of finding flaws that are evident on the visible surface.
b)
b) The part to be inspected by radiography is stressed by the application of heat, a static load or vibration to bring out the effect of the flaw on the surface displacement.
c)
c) Radiography is a NDT technique that uses X−rays or gamma rays.
17.
717. Which of the following statements is correct about Ultrasonics testing? (Level 2)
a)
a) Ultrasonic waves travel through solids and liquids at relatively high speeds, but are rapidly attenuated in gasses. The density and the elasticity of the medium may affect the wave speed.
b)
b) The part to be inspected by ultrasonics is stressed by the application of heat, a static load or vibration to bring out the effect of the flaw on the surface displacement.
c)
c) Ultrasonics is a NDT technique that uses X−rays or gamma rays.
18.
718. What are the typical of repairs on Composite parts? (Level 1)
a)
a) Injection repair, repair of edges.
b)
b) Repair of coverings and honeycombs
c)
c) Injection repair, repair of edges and repair of coverings, honeycombs
19.
719. Which of the following statements is correct about Repair through Injection of Resin? (Level 1)
a)
a) Repair through Injection of Resin is recommended for small damages of the honeycomb material. The area is filled with thickened resin/hardener alloy and in the next step made plane. However, the repaired area has lost nearly the half of its original strength.
b)
b) The repair through injection of resin is an approved repair for delamination or dissolving adhesives. If the damaged is caused by contamination or water absorption, this type of repair is not recommended.
c)
c) Repair through Injection of Resin is typical for sandwich structures. It is easy to accomplish especially if the damaged parts are very small. Today two different repairs of sandwich parts can be accomplished:
_ Repair of the covering, if only one side of the covering and/or parts of the combs are damaged.
_ Repair of the covering, if both covering parts and the combs are damaged
20.
720. Which of the following statements is correct about Filling Repair? (Level 1)
a)
a) Filling Repair Resin is recommended for small damages of the honeycomb material. The area is filled with thickened resin/hardener alloy and in the next step made plane. However, the repaired area has lost nearly the half of its original strength.
b)
b) Filling Repair is an approved repair for delamination or dissolving adhesives. If the damage is caused by contamination or water absorption, this type of repair is not recommended.
c)
c) Filling Repair is typical for sandwich structures. It is easy to accomplish especially if the damaged parts are very small. Today two different repairs of sandwich parts can be accomplished:
_ Repair of the covering, if only one side of the covering and/or parts of the combs are damaged.
_ Repair of the covering, if both covering parts and the combs are damaged
21.
721. Which of the following statements is correct about the Repair of honeycombs and covering? (Level 1)
a)
a) Repair of honeycombs and covering is recommended for small damages of the honeycomb material. The area is filled with thickened resin/hardener alloy and in the next step made plane. However, the repaired area has lost nearly the half of its original strength.
b)
b) Repair of honeycombs and covering is an approved repair for delamination or dissolving adhesives. If the damage is caused by contamination or water absorption, this type of repair is not recommended
c)
c) Repair of honeycombs and covering is typical for sandwich structures. It is easy to accomplish especially if the damaged parts are very small. Today two different repairs of sandwich parts can be accomplished:
_ Repair of the covering, if only one side of the covering and/or parts of the combs are damaged.
_ Repair of the covering, if both covering parts and the combs are damaged
22.
722. A category of plastic material that is capable of softening or flowing when reheated is called? (Level 2)
a)
a) Thermoset
b)
b) Thermoplastic
c)
c) Thermocure
23.
723. The length and of time that a catalyzed resin will remain in a workable state is called the (Level 2)
a)
a) Shelf life
b)
b) Service life
c)
c) Pot life
24.
724. What is the purpose of the water break test? (Level 2)
a)
a) Make sure the repair surface is clean of grease and contamination
b)
b) Ensure that there is no further damage at the repair surface
c)
c) Make sure the repair surface is clean of grease and contamination and no further damage at the repair surface
25.
725. What does Shelf Life mean? (Level 1)
a)
a) Shelf Life is the length and time that a catalyzed resin will remain in a workable state
b)
b) The shelf life is the time which the product is still good in an unopened container and varies from product to product
c)
c) The shelf life is the time that resin remains suitable for application after it has been mixed.
26.
726. What are the effects of the Perforated Parting Film? (Level 1)
a)
a) To prevent the bagging materials sticking to the repair surface. The film is perforated with small holes to allow air and gases to escape from the repair piles. Some resin will escape through the holes so, for repair, it is best to choose a film with pin-pricks to reduce the resin loss. Perforated parting film will produce a shiny, resin-rich surface on the repair.
b)
b) To help even-out the temperature over the entire repair, help even-out the pressure over the whole repair and improve the flatness of the surface of the repair.
c)
c) To allow the air and gases to escape easily
27.
727. What are the effects of the Caul Plate? (Level 2)
a)
a) To prevent the bagging materials sticking to the repair surface. The film is perforated with small holes to allow air and gases to escape from the repair piles. Some resin will escape through the holes so, for repair, it is best to choose a film with pin-pricks to reduce the resin loss. Perforated parting film will produce a shiny, resin-rich surface on the repair.
b)
b) To help even-out the temperature over the entire repair, help even-out the pressure over the whole repair and improve the flatness of the surface of the repair.
c)
c) To allow the air and gases to escape easily
28.
728. What are the effects of the Breather Fabric? (Level 1)
a)
a) To prevent the bagging materials sticking to the repair surface. The film is perforated with small holes to allow air and gases to escape from the repair piles. Some resin will escape through the holes so, for repair, it is best to choose a film with pin-pricks to reduce the resin loss. Perforated parting film will produce a shiny, resin-rich surface on the repair.
b)
b) To help even-out the temperature over the entire repair, help even-out the pressure over the whole repair and improve the flatness of the surface of the repair.
c)
c) To allow the air and gases to escape easily
29.
729. What are the effects of the Peel Ply? (Level 1)
a)
a) To leave a rough finish. This produces a surface which can be painted or bonded without further sanding.
b)
b) To provide an easy path for air to escape and to absorb any resin which comes through the holes in the perforated parting film.
c)
c) To prevent resin soaking through onto the other bagging materials and the heater blanket.
30.
730. What are the effects of Non−Perforated Parting Film? (Level 2)
a)
a) To leave a rough finish. This produces a surface which can be painted or bonded without further sanding.
b)
b) To provide an easy path for air to escape and to absorb any resin which comes through the holes in the perforated parting film.
c)
c) To prevent resin soaking through onto the other bagging materials and the heater blanket.
31.
731. What are the effects of the Bleeder Cloth? (Level 2)
a)
a) To leave a rough finish. This produces a surface which can be painted or bonded without further sanding.
b)
b) To provide an easy path for air to escape and to absorb any resin which comes through the holes in the perforated parting film.
c)
c) To prevent resin soaking through onto the other bagging materials and the heater blanket.
32.
732. What are the effects of the Heater Blanket? (Level 2)
a)
a) Heater Blanket is used to control the temperature of the repair during the warm-up, cure and cool-down stages of the repair
b)
b) Heater Blanket is used to reduce heat loss and to minimise the effects of draughts on the repair
c)
c) Heater Blanket is used to seal the vacuum bag to the surface of the item under repair
33.
733. What are the effects of the Insulation? (Level 2)
a)
a) Insulation is used to control the temperature of the repair during the warm-up, cure and cool-down stages of the repair
b)
b) Insulation is used to reduce heat loss and to minimise the effects of draughts on the repair
c)
c) Insulation is used to seal the vacuum bag to the surface of the item under repair
34.
734. What are the effects of the Bag Seating Tape? (Level 2)
a)
a) Bag Seating Tape is used to control the temperature of the repair during the warm-up, cure and cool-down stages of the repair
b)
b) Bag Seating Tape is used to reduce heat loss and to minimise the effects of draughts on the repair
c)
c) Bag Seating Tape is used to seal the vacuum bag to the surface of the item under repair
35.
735. Basically, what is corrosion? (Level 1)
a)
a) Corrosion is defined as an undesirable, natural reaction of materials with substances in their environment
b)
b) Corrosion is defined as a desired chemical reaction of materials with substances in their environment
c)
c) Corrosion is a type of mechanical abrasion that reduces material thickness
36.
736. If there is an area with worm-like traces on the surface of the aluminum alloy, what kind of corrosion is it (Level 1)
a)
a) Electrochemical Corrosion
b)
b) Filiform Corrosion
c)
c) Galvanic Corrosion
37.
737. Why is pitting corrosion dangerous (Level 1)
a)
a) Because it has no obvious signs on the surface of the metal so it is difficult to detect. In addition, the corrosion extends in the vertical direction so it reduces material strength
b)
b) Because it has no obvious signs on the surface of the metal so it is difficult to detect. In addition, the corrosion extends in the horizontal direction so it reduces material strength
c)
c) Because it is the most difficult type of corrosion to repair
38.
738. When you immerse a electrode metal bars in electrolyte fluid, what will happen with the Anode? (Level 2)
a)
a) The dissolved ions take in electrons and deposit as metal atoms on the electrode surface, which means that the metal ions are reduced
b)
b) This is an oxidation-reduction reaction
c)
c) Positively charged metal-ions are emitted to the electrolyte, and leave behind negatively charged electrodes in the metal
39.
739. When you see the white-grey powdery on surface of steel, what does it mean? (Level 2)
a)
a) Mean nothing
b)
b) This is a sign of corrosion on surface
c)
c) This is the production of the oxidation on steel surface
40.
740. In a Galvanic Cell made from Zn (Anode) and Cu (Cathode), which electrode is oxidized (Level 3)
a)
a) Cu
b)
b) Zn
c)
c) None
41.
741. What will happen if Austenitic steel works under high temperature? (Level 2)
a)
a) It can lose their corrosion resistance ability
b)
b) Steel characteristics do not change, due to their high thermal strength
c)
c) They will become softer
42.
742. Can steels made from alloys of chromium (Cr)−nickel (Ni) and chromium−nickel-manganese be corroded? (Level 2)
a)
a) No, They are corrosion resistance steels
b)
b) Yes, if it works under high temperature environment
c)
c) Yes, after hardened only by cold-working
43.
743. Aluminum alloy has good corrosion resistance right? (Level 2)
a)
a) Wrong
b)
b) Right
c)
c) It depends on the main metal in the alloy
44.
744. With aluminum alloys are used on aircraft, which part plays the role of corrosion resistance (Level 2)
a)
a) The main metal composition in the alloy will determine its corrosion resistance
b)
b) Due to the low strength of aluminium alloy, it is unsuitable for aircraft structures
c)
c) A thin layer of pure aluminium on surface is a means of corrosion protection
45.
745. Why say Corrosion of metals is the tendency to return to their natural state? (Level 2)
a)
a) Because in nature metals exist in the form of alloys
b)
b) Because in nature, almost all metals exist in the form of noble metals, thus alloys tend to return to their metal oxides form
c)
c) Because in nature, except some noble metals, almost metals do not exist in their pure form, exist only in the form of metal ores (oxides)
46.
746. What are the basic conditions for the formation of corrosion? (Level 1)
a)
a) Material, environment and the chemical reaction of material with environment
b)
b) Material, inert gas and the chemical reaction of material with gas
c)
c) Material, Oxygen and temperature
47.
747. In a mechanical joint between aluminum alloy and copper, which material will be corroded first (Level 2)
a)
a) None of them, because they are corrosion resistance
b)
b) Aluminum alloy
c)
c) Cu
48.
748. Corrosion occurs when two dissimilar metals make electrical contact in the presence of an electrolyte, what is it? (Level 1)
a)
a) Galvanic corrosion
b)
b) Electrochemical Corrosion
c)
c) Fretting Corrosion
49.
749. There is a damage on the surface of the ALCLAD sheet, the depth of which exceeds 7% of the thickness of the metal sheet. If not repaired, what kind of corrosion is most likely to occur? (Level 3)
a)
a) Intergranular Corrosion
b)
b) Fretting Corrosion
c)
c) Filiform Corrosion
50.
750. Name one method of corrosion protection that uses electrochemical reactions (Level 3)
a)
a) Electrolysis
b)
b) Electroplating technique
c)
c) Electrochemical
51.
751. Why aircraft fuselage structure joints use aluminum alloy rivets and not steel or monel rivets? (Level 2)
a)
a) Because aluminum alloy rivets are easy to install
b)
b) Because aluminum alloy rivets have better strength and less susceptible to corrosion than others
c)
c) This will minimize corrosion due to the dissimilar metal of rivets and aircraft structures
52.
752. When there is corrosion on aircraft structures, what are its consequences? (Level 2)
a)
a) The Aircraft is inoperable
b)
b) Aircraft structures are reduced mechanical strength, functional impairment or destroyed if these damaged structures are not repaired appropriately
c)
c) The aircraft is not allowed to operate until the damaged structures are replaced
53.
753. During routine aircraft maintenance, a fuel sample is usually taken for inspection. One of the purposes of this is to prevent corrosion in the fuel tank. Why? (Level 3)
a)
a) Because in the fuel tank may have water and microorganisms can grow in the tank. This will cause corrosion of the fuel tank structure
b)
b) Because the fuel in the tank can be mixed with the electrolyte solution, leading to electrochemical corrosion
c)
c) Because the fuel in the tank can change its chemical structure, turning it into structural corrosive substances
54.
754. In 2 metal joints:
1: between aluminum alloy 2024 and tin,
2: between 2024 and Zinc.
In which joints aluminum alloy 2024 will be corroded first after a period of working time (Level 3)
a)
a) In the joint between 2024 and Tin
b)
b) In the joint between 2024 and Zinc
c)
c) None of them
55.
755. How many part of the Hi-Lok and Hi-Lite (pin threaded) fastener: (Level 1)
a)
a) There are one parts: Collar with an internal thread, an external hexagonal drive and an external
b)
b) There are one parts: Threaded pin with a head (universal or countersink)
c)
c) There are two parts: Threaded pin with a head (universal or countersink) and collar with an internal thread, an external hexagonal drive and an external
shear groove
56.
756. Pin (threaded) fasteners are usually installed in interference-fit holes? (Level 2)
a)
a) TRUE
b)
b) FALSE
c)
c) Not given
57.
757. A clearance fit hole (unless specified differently) must be used if one or more of the structural members to be attached are made of? (Level 2)
a)
a) Aluminum alloy
b)
b) Steel, Stainless steel, Titanium
c)
c) Application for all material
58.
758. Can install the pin (threaded) fasteners with power or hand tools? (Level 1)
a)
a) Not allow
b)
b) Just hand tools
c)
c) Yes, depending on the position the power/hand tools can access.
59.
759. When blind rivets which are used for repair work on the aircraft? (Level 2)
a)
a) At the locations in an aircraft structure, which are need the heavy load
b)
b) At the locations in an aircraft structure, which are need the light load
c)
c) At the locations in an aircraft structure, which are very hard to reach for riveting - it is impossible to set a rivet snap at the other site of the rivet
60.
760. How to identify material and type of solid rivets are identified by? (Level 1)
a)
a) Symbol and shape on head of rivet
b)
b) Shape of rivet
c)
c) Length of rivet
61.
761. Which type of solid rivet may used in tank sealing rivets? (Level 2)
a)
a) Type A- and DD rivets
b)
b) Type A- and AD rivets
c)
c) Type AD- and DD rivets
62.
762. Which symbol on TAPER-LOK HEAD MARKS is Heat Resistant Alloy? (Level 1)
a)
a) HB
b)
b) CB
c)
c) H
63.
763. Which symbol on TAPER-LOK HEAD MARKS is 6Al4V Titanium Alloy? (Level 1)
a)
a) HB
b)
b) V
c)
c) H
64.
764. A Lockbolt (pin swaged) fastener is a two-piece assembly consisting of: (Level 1)
a)
a) A pin with a protruding or countersink head
b)
b) A collar
c)
c) A pin with a protruding or countersink head and a collar
65.
765. Which type of fit are used to install Lockbolt pins in thin structure? (Level 2)
a)
a) Clearance fit
b)
b) Transitionfit
c)
c) Interference Fit
66.
766. Which type of fit are used to install Lockbolt pins in thick structure? (Level 2)
a)
a) Clearance fit
b)
b) Transitionfit
c)
c) Interference Fit
67.
767. Which type of fit are used to install Lockbolt pins in any structure? (Level 2)
a)
a) Interference Fit
b)
b) Transitionfit
c)
c) Interference or transition fit
68.
768. What are rivets made of US material 1100 used for? (Level 1)
a)
a) Attach aluminium alloy components where a high−strength rivet
b)
b) Attach aluminium alloy components where a low−strength rivet is sufficient to hold the load.
c)
c) Attach aluminium alloy components where a normal−strength rivet is sufficient to hold the load.
69.
769. Do Monel rivets need to be heat treated before use? (Level 1)
a)
a) No
b)
b) Yes
c)
c) Not given
70.
770. Monel rivets are used on which material? (Level 1)
a)
a) Steel riveted assemblies
b)
b) Steel, titanium or aluminium alloy riveted assemblies
c)
c) Steel or aluminium alloy riveted assemblies
71.
771. Do Titanium rivets need to be heat treated before use? (Level 1)
a)
a) No
b)
b) Yes
c)
c) Not given
72.
772. A commonly-used rule of thumb for selecting the rivet size is to choose a rivet whose diameter is? (Level 2)
a)
a) At least 2 times the thickness of the thickest sheet being joined.
b)
b) At least 2.5 times the thickness of the thickest sheet being joined.
c)
c) At least 3 times the thickness of the thickest sheet being joined.
73.
773. How many head types of Solid Rivets? (Level 1)
a)
a) 12
b)
b) 11
c)
c) 10
74.
774. Symbol of solid rivet 2017 Aluminium Alloy (AD)? (Level 2)
a)
a) They are identified by two raised dashes on their heads.
b)
b) A raised dot in the centre of their head.
c)
c) A small dimple in the centre of their head
75.
775. Symbol of solid rivet 2017 Aluminium Alloy (D)? (Level 2)
a)
a) They are identified by two raised dashes on their heads.
b)
b) A small dimple in the centre of their head
c)
c) A raised dot in the centre of their head.
76.
776. Symbol of solid rivet 2024 Aluminium Alloy (DD)? (Level 2)
a)
a) A raised dot in the centre of their head.
b)
b) A small dimple in the centre of their head
c)
c) They are identified by two raised dashes on their heads.
77.
777. Symbol of Titanium rivets are identified on their head? (Level 2)
a)
a) Titanium rivets are identified by a raised V or T on their head
b)
b) A small dimple in the centre of their head
c)
c) A raised dot in the centre of their head.
78.
778. Symbol of Corrosion Resistant Steel rivets are identified on their head? (Level 2)
a)
a) No mark
b)
b) A small dimple in the centre of their head
c)
c) A raised dot in the centre of their head.
79.
779. When remove solid rivet, you must drill-out on? (Level 1)
a)
a) Manufacture head
b)
b) Upset head
c)
c) Any direction head you can access
80.
780. When remove Hi Lok/Hilite, you must? (Level 1)
a)
a) Drill on manufacture head
b)
b) Upset head
c)
c) Loosen Collar/nut and then punch out the rivet or drill any direction head you can access
81.
781. Working pressure of HP-Tubes is? (Level 1)
a)
a) Above 1500 PSI
b)
b) Above 1800 PSI
c)
c) Under 1500 PSI
82.
782. What material principally made of lines in the engine area and in the landing gear area? (Level 1)
a)
a) Aluminum
b)
b) Steel
c)
c) Titanium
83.
783. The MS-Fitting consists of? (Level 2)
a)
a) A fitting, a sleeve and a union nut
b)
b) A fitting, a bolt and a union nut
c)
c) A fitting, a sleeve and a flare nut
84.
784. How many types of Harrison-Type-Fittings? (Level 1)
a)
a) 1
b)
b) 3
c)
c) 2
85.
785. What is construction of hose include? (Level 2)
a)
a) The inner layer, the reinforcement layer and the outer cover
b)
b) The reinforcement layer and the outer cover
c)
c) The inner layer and the outer cover
86.
786. What size of the inner diameter of hoses is usually given in? (Level 2)
a)
a) 1/8 inch
b)
b) 1/16 inch
c)
c) 1/4 inch
87.
787. What is a spring? (Level 1)
a)
a) Is an engineering component which when deflected by a force tends to return to its unloaded shape
b)
b) Is an engineering component which when deflected by a force tends to keep to its unloaded shape
c)
c) Is an engineering component which when deflected by a force tends to return to its loaded shape
88.
788. How many classes of metal springs have? (Level 1)
a)
a) 1
b)
b) 3
c)
c) 2
89.
789. Which spring are used to apply a fixed load throughout their life? (Level 2)
a)
a) High Duty Springs
b)
b) Static Load Springs
c)
c) General Duty Springs
90.
790. Which spring can produce tensional and torsional movement? (Level 2)
a)
a) Wireform Springs
b)
b) Torsion Springs
c)
c) Compression Springs
91.
791. Which material of spring can be used for high temperatures up to 343 degrees Celsius? (Level 2)
a)
a) Alloy Steel Wire
b)
b) Stainless Steel Wire
c)
c) High−Temperature Alloy Wire
92.
792. How is compression springs work? (Level 1)
a)
a) By resisting compressive force
b)
b) By resisting externally applied torque
c)
c) By their initial tension resisting the pulling force to which their ends are attached
93.
793. What is/are main function(s) of bearing? (Level 1)
a)
a) Used to support the journals of shafts
b)
b) Used to support the journals of axles
c)
c) Used to support the journals of shafts and axles
94.
794. What are 02 types of bearings? (Level 1)
a)
a) Pivot bearings and axial bearings
b)
b) Axial bearings and journal bearings
c)
c) Journal bearings or roller bearings
95.
795. What are 02 kinds of bearings loading? (Level 2)
a)
a) Radial and thrust
b)
b) Axial and thrust
c)
c) Radial and axial
96.
796. How many types of anti−friction bearings? (Level 1)
a)
a) 3
b)
b) 4
c)
c) 5
97.
797. Construction of an anti-friction bearing consists of? (Level 2)
a)
a) The outer and inner raceway, the rolling element and usually a rolling element cage
b)
b) The inner raceway, the rolling element and usually a rolling element cage
c)
c) The outer raceway, the rolling element and usually a rolling element cage
98.
798. What is/are material of the anti friction bearing raceways and rolling elements? (Level 1)
a)
a) Chromium steel or chromium nickel steel
b)
b) Chromium steel or titanium nickel steel
c)
c) Aluminum or chromium nickel steel
99.
799. Which load(s) the tapered roller bearing can handle? (Level 1)
a)
a) Radial and axial loads
b)
b) Axial and thrust loads
c)
c) Radial and thrust loads
100.
800. Which bearing combines the benefits of all the other bearing types as well as offering additional advantages? (Level 2)
a)
a) Spherical roller bearing
b)
b) The tapered roller bearing
c)
c) The ball bearing
100 %
