ACRM 2023

What is the purpose of sizing in fabric production?

A. To increase the strength and luster of the fabric

B. To reduce the stretch of the fabric.

C. To condition the yarns for easier weaving.

D. To facilitate the discussion of fabrics and tapes.

C.

What does the term "count" represent in fabric terminology?

A. The direction across the width of the fabric.

B. The direction along the length of the fabric.

C. The number of threads per inch in warp or filling.

D. The number of yarns making up a thread.

C.

What does the term "ply" indicate in fabric terminology?

A. The direction across the width of the fabric.

B. The direction along the length of the fabric.

C. The number of threads per inch in warp or filling.

D. The number of yarns making up a thread.

D.

What is the difference between an airworthiness directive and a service bulletin?

A. An airworthiness directive is a mandatory requirement, while a service bulletin is a voluntary recommendation.

B. An airworthiness directive is issued by the FAA, while a service bulletin is issued by the aircraft manufacturer.

C. An airworthiness directive addresses actual safety issues, while a service bulletin addresses potential safety issues.

D. All of the above.

D.

What are the different types pf airworthiness directives?

A. Mandatory.

B. Emergency.

C. Proposed.

D.All of the above,

D.

What is the subject under Advisory Circular 39-7D?

A. Airworthiness Directives

B. Maintenance, Preventive Maintenance, Rebuilding, and Alteration

C. General Operating and Flight Rules

D.Alternative Methods of Compliance

A.

An AD applies to each product identified in the applicability statement, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of the AD.

A. Changed Products

B. AD Compliance

C. Proposed,

D. All of the above.

D.

The process of joining sheet metals by upsetting the end of a headed cylindrical fastener thru hammering or squeezing.

A. Riveting

B.Forging

C.Machining

D. Welding

A.

The process of joining metals by application of a high- temperature flame or electric are in combination with a filler rod which is usually of the same composition as the base metal.

A. Forging

B. Riveting

C. Welding

D. Machining

C.

The process which is general conditioned to sheet metal stock and employs such standard practice machines as drop hämmers, hydraulic presses, power brakes, and punch presses. Chips are produced during this

A. Forging

B. Chaffing

C. Chipping

D. Cold working

A.

The weight of the structure, powerplant, furnishing, and other equipment that are considered an integral part of the aircraft is called

A.gross weight

B. basic weight

C. empty weight

D. operating weight

C

What is the primary purpose of laminating in plastic manufacturing?

a.To create high-pressure molded parts

b.To produce complex shapes at high temperatures and pressures

C.To reinforce materials with a synthetic-resin binder

d. To impregnate sheets with phenol-formaldehyde resin

C

Which process is used to manufacture laminated sheet?

a. Molding

b. Casting

C. Extruding

D. High-pressure molding

D.

How is laminated tubing made?

A. By rolling impregnated reinforcing material on a mandrel

B. By pouring thermosetting materials into molds

C. By heating and pressing layers of wood veneer

D. By using a self-feeding screw-type ram or stuffer

A

What is the main difference between high-pressure laminating and low-pressure laminating?

A. High-pressure laminating requires higher temperatures than low-pressure laminating.

B. Low-pressure laminating is used for simple shapes, white high-pressure laminating is used for complex shapes.

C.Low-pressure laminating involves the use of bonding resins, while high-pressure laminating does not.

D.High-pressure laminating requires the use of wood veneer, while low-pressure laminating uses synthetic materials.

A.

What is the function of solid-state GPU?

A. To convert power from AC to DC

B. To generate power using gas or diesel

C. To provide power for airport lighting systers

D. To charge batteries of ground support equipment

A.

A specialized type of towing vehice designed to push after aft away from the

gate.

A. Busses

B. Pushback Tugs

C. Belt Loaders

D. Dollies

B.

What is the primary function of a belt loader in aircraft operations?

A. Unloading and loading cargo and baggage

B. Providing power to parked aircraft

C. Preventing aircraft movement while parked

D. Assisting passengers and crew with boarding the aircraft

A.

Standard aircraft bolts are marked for identification. The steel bolt is marked on the head with

A. a teat

b. an asterisk

C. letter'S'

D. an embossed cross

B.

The drilled head steel bolts is used as a means for

A. decorative purposes

B. lightening the bold

C. Installing a cotter pin

D. for safetying

D.

Comprises any actions that alter a product or system in such a way as to keep it in an operationancition.on or to return it to an operational condition if it is in a failed condition.

A. Maintainability

B. Reliability

C. Availability

D. Maintenance

D

What is the function of a trim tab on an aircraft control surface?

a. To provide additional lift

b. To assist in roll control

C.To relieve control surface forces

d. To control the aircraft's pitch

C

Which grade of fabric contains 80 to 84 threads per inch in both warp and filling?

a. Synthetic fabric

c. Linen fabric

b. All-metal fabric

d. Grade A fabric

D

This type of corrosion usually caused by non-uniform deformation during cold working, ad by internal structural rearrangement involving volume changes.

A. Stress

c. Fretting

b. Pitting

d. Exfoliation

*A. (Dating D for some reason)

It is a phenomenon of fracturing after a series of cyclic loads maybe much less that the ultimate load.

a. Fracture

b. Creep

c. Stress

d. fatigue

D

What are the benefits of cold working?

a. Increased strength, hardness, and fatigue life.

b. Decreased strength, hardness, and fatigue life.

c. Increased ductility and machinability.

d. Decreased ductility and machinability.

A.

What is annealing?

a. A heat treatment process that softens the material and increases its ductility

b. A heat treatment process that hardens the material and increases its strength

c. A heat treatment process that makes the material more resistant to corrosion

d. None of the above

A.

Which of the following is not considered when installing rivets or bolts?

a. Use many bolts as practical

b. Distribute the total stresses as equally

c. Make sure the holes drilled in the plastic are sufficiently larger than the diameter of the bolt.

D. Use undersize tube spaces to protect the plastic from direct pressure.

D.

Which of the following statements is not an indication when sealants should be repaired?

a. Seams are exposed through the sealant fillet

B. Sealants have scratches

c. Hole-filling sealants is exposed through overcoating

d. Seams are exposed through the sealant File

B.

Which composite material corrodes aluminum alloys if it comes into direct contact with them?

a. Kevlar

B. Fiberglass

C. Graphite

D. Acrylic

C

Which of the following would best protect the interior surface of sealed structural steel tubing against corrosion?

a. Linseed oil

B. Aliphatic naphtha

C. Boric acid

d. Aromatic naphtha

A.

Aliphatic naphta - Clean acrylics and rubber

Linseed oil -Protect interior surface of structural steel tubing

Boric acid -For nickel cadmium batteries

What non-destructive technique is used to detect surface cracks, pits, subsurface cracks, corrosion and heat eatment condition of a material

a. Eddy current

B Magnetic particle

C Ultrasonic

d. Dye penetrant

*A (dating B)

What does not cause a corrosion?

a. Alkalis

c. Micro-organism

b. Water

d. None of the above

D

which of the following is a common method used for repairing composite aircraft structures?

a. Riveting

B. Bonding with adhesive

C. Plastering

d. Bolting

B

It is a type of corrosion which can be caused by non-uniform deformation during cold working or by unequal cooling from high temperatures.

a.Filiform b. Pitting c. Stress d. Fatigue

*C (Dating A, for some reason)

It is a partial fracture or complete break in the material with the most significant cross-sectional area change.

a. Scratch

b. Gouge

c. Crack

d. Dimple

*C

Which of the following statements is are true for the ultrasonic test?

a. Equipment used for ultrasonic testing is portable

b. Complicated shapes can be easily scanned

c. Waves generated are hazardous

d. Complicated shapes can be easily scanned and waves generated are hazardous.

A*

This corrosion is caused by the combined effects of cyclic stress and corrosion.

a. Stress b. Fatigue c. Galvanic d Crevice

B

It is a deeper tear or break in metal surface from the surrounding area.

a Score

B Scratch

c. Upsetting

d. Nick

A

What is called to the resultant layer of adhesive joining any two adjacent wood layer in the assembly?

a. Glue line

B Gap-fill

C. Adhesive joint

d, Spread line

A

This type of welding is accomplished by heating the ends or edges of metal parts to a molten state with a high-temperature flame

a. Oxyacetylene welding

b. Gas welding

c. Electric arc welding

d. Electric resistance welding

A.

Which tool is used to find the center of a shaft or other cylindrical work? Select one:

a. Micrometer caliper.

B. Protractor

C. Dial indicator

d. Combination set

C

Nickel-cadmium battery cases and drain surfaces which have been affected by electrolyte should be neutralized with.

a. Linseed oil

B. Aliphatic naphtha

C. Boric acid

d. Aromatic naphtha

C

Which of the following chemicals is used to remove paint from aircraft surfaces?

a. Solvents

c. Cleaners

b. Corrosion inhibitors

d. Lubricants

A

Which destructive testing is used to evaluate the ductility and

a. Impact

c. Shear

b. Torsion

d. Bending

A

This hardness test is associated with the elasticity of the material

a. Shore scleroscope test

B. Izod impact test

C. Charpy impact test

d. None of the above

A.

A type of composite material which is used where high temperature application is needed

a. Boron b. Fiberglass

c. Ceramic d. Aramid

C

Which material would soften and could easily change shape when reheated?

a. Thermoset

B. Resin

C. Thermoplastic

d. Polyester

C

It is an early thermosetting matrix formula which is mainly used with fiberglass composites to create non-structural applications.

a. Polymer

B. Polyester

C, Ероху

d. Kevlar

B

It is a form of concentration cell corrosion which usually occurs in a metal joint and corrosion at the edge of the joint.

a. Stress

B. Fretting

C. Crévice

D, Galvanic

C

It is an electrolytic treatment in which a metal is bathed in a lead vat containing a solution of chromic acid and water.

a. Alodizing

B. Cladding

C. Anodizing

d. Protective coating

C

How often should I check for new service bulletins for my aircraft?

a. Every month.

B. Every year.

C. Every quarter.

d. As needed.

B

What distinguishes ULD dollies from dollies for loose baggage?

a. ULD dollies are larger in size and more mobile.

b. ULD dollies are used for transporting cargo only.

c. ULD dollies are standardized and function like mobile pallets.

d. ULD dollies are enclosed to protect the cargo from the elements.

C

Which of the following methods is commonly used for deicing aircraft to remove ice and frost accumulation?

a. Chemical spraying

b. Heating the aircraft's exterior

c. Mechanical scraping

d. All of the above

D

What are ground power units (GPU) designed for?

a. To supply power to parked aircraft

B To charge batteries on ground vehices

c. To provide power to airport facilities

d. To generate electricity for nearby buildings

A

An AD applies to each product identified in the applicability statement, regardless of whether it has been modified, altered, or repaired in the area subject to the requirements of the AD.

a. Changed Products

B. Proposed.

C. AD Compliance

d. All of the above.

D

What type of vehicles are used as de icing vehicles

a. Cherry-picker-like devices

c. Pushback tugs

b. Belt loaders

d. Passenger boarding steps

A

Where can I find service bulletins for my aircraft?

a. On the aircraft manufacturer's website.

b. In the FAA's Airworthiness Directives database

C. Both A and B.

d. Neither A nor B

C

What happens if an aircraft operator fails to incorporate the changes specified in a service bulletin?

a. The aircraft operator may be fined by the FAA.

b. The aircraft operator may be held liable in the event of an accident.

c. The aircraft may be grounded.

D. All of the above.

D

What is the function of aircraft tripod jacks?

A. To support an aircraft while on the ground

B. To lift heavy cargo onto the aircraft

C. To stabllize the aircraft during passenger deplaning

D. To assist with aircraft maintenance tasks

A

What is the primary function of a belt loader in aircraft operations?

a Unloading and loading cargo and baggage

b. Providing power to parked aircraft

c. Preventing aircraft movement while parked

d. Assisting passengers and crew with boarding the aircraft

A

When are aircraft tripod jacks typically used?

a. When passengers are boarding the aircraft

b. When the aircraft becomes tail heavy during deplaning

C. When the aircraft is undergoing maintenance

d. When the aircraft is in flight

C

What type of yarn is used to achieve the required strength properties for Grade A fabric?

a. 1-ply yarn

b. 2-ply yarn

c. 3-ply yar

d. 4-ply yarn

B

What do the first and last digits in the new alloy designation system represent?

a. Alloy group and impurity limits

b. Impurity limits and alloy purity

c. Alloy purity and alloy group

d. Modifications and alloy purity

C

It is the tightly woven edge parallel to the warp direction, which presents edges from unraveling

a. Bias

b. Weft

C. Selvage

d. None of the above

C

What is called to occurrence of shallow, spherical depressions in a surface, usually produced by a part having a small radius in contact with the surface under high load?

a. Dent

b. Burnishing

c. Brinelling

d. Burr

C

_____ of wire increases the tensile strength tremendously but

greatly reduces the ductility.

a. Cold rolling

b. Hot pressing

c. Cold drawing

d. Hot forging

C

How is the tape made from balloon cloth prepared before use?

a It is coated with a nitrate dope on both sides

b. It is calendered to increase its strength

c. It is pre-stretched to enhance its elasticity

d. It is woven with reinforcing fibers

A

What type of vehides are used as de-iding vehicles?

a. Cherry-picker-like devices

b. Belt loaders

C. Pushback tugs

D. Passenger boarding steps

A

Which of the following methods is commonly used for deicing aircraft to remove ice and frost accumulation?

A. Chemical spraying

B. Heating the aircraft's exterior

C. Mechanical scraping

D. All of the above

D

(Refer to the figure below) What is the dimension of F? Setback at D= 0.090

Setback at E= 0.072 Bend allowance at D= 0.150 Bend allowance at E= 0.125

Imagine nyo nalang figure.

A. 5.936

B. 4.834

C. 5.738

D. 5.951

D

Flammable liquids are under what classification of fire?

A. Class A

B. Class B

C. Class C

D. Class D

B

A chemical oxygen generator normally contains?

A. mixture of sodium chlorate and iron

B. powder compressed liquid oxygen

C. gaseous oxygen

D. Mixture of oxygen and nitrogen

A.

The standard minimum edge distance for countersunk rivets is?

a

A. 2 ½ D of the rivet head

B. 2 D of the rivet head

C. 2 ½ D of the rivet shank

D. 2 D of the rivet shank

D

ASTM stands for?

A. American Standard for Testing Materials

B. American Standard for Testing and Materials

C. American Society for Testing and Materials

D. American Society for Testing Materials

C

American Society for Testing Materials

The color of aluminum's corrosion is?

A. red

B. Pink

C. White

D. orange

C

What is generally used in the construction of aircraft engine firewalls?

a.stainless steel

b. Monel

С. Inconel

D. Clad aluminum

A

How is the Aluminum Association system arranged to divide the common alloy

types?

A. Into seven main groups

B. Into eight main groups

C. Into nine main groups

D. Into ten main groups

B

What is the main alloying element in the 6xxx aluminum alloy group?

a. Manganese

b. Copper

с. Silicon

d. Magnesium

Silicon and magnesium

What does the temper designation "F" indicate in aluminum alloys?

A. As-fabricated condition

b. Fully annealed condition

C. Strain-hardened condition

d. Artificially aged condition

A

Why is Copper-Silicon-Bronze tubing preferred over pure copper tubing for certain applications?

a. It is stronger and more suitable for fuel, oil, water, and air lines.

b. It has better corrosion resistance.

c. It is more cost-effective.

d. All of the above

D

What is the tensile strength of copper wire used in aircraft construction?

A. 40,000psi

B. 10,000psi

C. 20,000psi

d. 50,000psi

A

How is brass different from copper?

а. Brass contains a solid solution of zinc in copper.

b. Brass has a lower density than copper.

C. Brass has inferior corrosion resistance.

D. Brass is magnetic.

A

How is the strength of Muntz Metal increased?

A. By heat treatment

B. By quenching in water

C. By slow cooling in air

D. By adding more copper

A

How are changes in direction of a control cable accomplished?

a. pulleys

b. Gusset

C. fairleads

d. Bell Cranks

A

Identify the cable that is used in primary control systems and in other places where. operation over pulleys is frequent.

A. 7-6

B. 7-19

C. 1-19

D. none of the above

B

In the four-digit aluminum index system number 2024, the first digit indicates

A. minor alloying element

B. the major alloying element

C. The percent of alloying metal

D. it is, obusely aluminum

B

The aluminum code number 1100 identities what type of aluminum?

A. 99 percent aluminum

B. 99 percent pure aluminum

C. 99 percent commercially pure aluminum

D. Aluminum containing 11% impurity

C

When inspecting a composite panel using the ring test/tap-ping method, a dull thud may indicate

A. separation of the laminates,

B. an area of too much matrix between fiber layers

C. Less than full strength curing of the matrix.

D. Lower stress concentrations.

A

The classification for high tensile strength fiberglass used in aircraft structures

Is

A. S

B. G

C. E

D. F

A

The vast majority of aircraft control cables are terminated with swaged terminals that must be

a. corrosion treated to show compliance with the manufacturers requirements after the swaging operation

b. pull tested to show compliance with the manufactures requirements after the swaging operation.

c. checked with a go-no-go gauge before and after, to show compliance with the manufacturers requirements after the swaging operation.

d. none of the above

C

Why was the alloy designation system introduced for aluminum alloys?

a. To simplify the naming conventions

b. To differentiate between different chemical compositions

C.To standardize the naming across different companies

d. To improve the understanding of aluminum alloys

C

Which statement best describes magnesium welding?

а. filler rod should be zinc

b. magnesium can be welded to other metals

c. it is impossible to weld magnesium because it is flammable

d. Filler, rod should be the same composition as base metal.

D

Welding over brazed or soldered joints is

A. not permitted

B. permissible for mild steel

C. permissible only for aluminium

d. permissible to some ferrous metals

A

Why are winglets often added to aircraft wings?

A. To increase lift during takeoff.

B. To improve the aircraft's stability

C. To reduce drag and improve fuel efficiency

d. To house navigation lights

C

What is the primary purpose of a fairing on an aircraft?

a. To increase lift during takeoff and landing

b. To reduce drag and improve aerodynamics

c. To provide additional structural strength

d. To house communication equipment

B

Which type of landing gear configuration is commonly found on commercial airliners?

a. Tricycle gear

b. Taildragger gear

C. Tandem gear

d. Skid gear

A

What is the primary purpose of an aircraft's fuselage?

A. To generate lift

B. To house the cockpit and passengers

C. To control the aircraft's yaw

D. To provide stability around the roll axis

B

Where are the ailerons located on an aircraft?

A. On the tail of the aircraft

B. At the rear of the fuselage

C. On the wings

D. On the trailing edge of the wings

D