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Examen Ingles DGAC 251-300

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Last Update: January 2015 Examen para obtener licencia de mecánico de mantenimiento 300 preguntas.
jose Ramirez
Quiz by jose Ramirez , updated more than 1 year ago
jose Ramirez
Created by jose Ramirez almost 6 years ago
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Resource summary

Question 1

Question
ABSOLUTE PRESSURE IS EQUAL TO REF.: FAA-H-8083-30, PAGE 3-25.
Answer
  • ATMOSPHERIC PRESSURE.
  • INSTRUMENT PRESSURE.
  • GAUGE PRESSURE PLUS ATMOSPHERIC PRESSURE.
  • GAUGE PRESSURE MINUS ATMOSPHERIC PRESSURE.

Question 2

Question
ALL METALS AND ALLOYS ARE ELECTRICALLY ACTIVE AND HAVE REF.: FAA-H-8083-30, PAGE 6-3.
Answer
  • A SPECIFIC WEIGHT.
  • A SPECIFIC STRENGTH.
  • A SPECIFIC CORROSION RESISTANCE.
  • A SPECIFIC ELECTRICAL POTENTIAL.

Question 3

Question
ARE THERE TIMES WHEN DEFINITE PRESSURE MUST BE APPLIED TO A NUT OR BOLT AS IT IS INSTALLED? REF.: FAA-H-8083-30, PAGE 9-7.
Answer
  • NO, IN THOSE CASES SPECIAL WRENCH MAY BE USED.
  • YES, IN THOSE CASES TORQUE WRENCH MAY BE USED.
  • NO, IN THOSE CASES COMMON WRENCH MUST BE USED.
  • YES, IN THOSE CASES TORQUE WRENCH MUST BE USED.

Question 4

Question
AROUND WHAT IS AN AIRPLANE CONTROLLED IN FLIGHT? REF.: FAA-H-8083-30, PAGE 3-42.
Answer
  • IS CONTROLLED AROUND ONE OR MORE OF THREE AXES OF ROTATION.
  • IS CONTROLLED AROUND MAIN AND SECUNDARY FLIGHT CONTROLS.
  • IS CONTROLLED FROM THE COCKPIT.
  • IS CONTROLLED AROUND ONE AXIS OF ROTATION AT ONE TIME.

Question 5

Question
AS A GENERAL RULE, WHAT WILL BE THE RIVET DIAMETER IN A REPAIR WORK? REF.: AC 65-15A, PAGE
Answer
  • NOT LESS THAN THREE TIMES THE THICKNESS OF THE THINER SHEET.
  • NO LESS THAN THREE TIMES THE THICKNESS OF THE THICKER SHEET.
  • NO MORE THAN THREE TIMES THE THICKNESS OF THE THICKER SHEET.
  • EQUAL TO THREE TIMES THE THICKNESS OF THE THICKER SHEET.

Question 6

Question
ASSUMING THAT THE TEMPERATURE AND PRESSURE REMAIN THE SAME, HOW DOES THE DENSITY OF THE AIR CHANGE WITH THE HUMIDITY? REF.: AC 65-15A, PAGE 29.
Answer
  • DEPENDS ON THE PROPORTION.
  • DOES NOT VARY.
  • VARIES INVERSELY.
  • VARIES DIRECTLY.

Question 7

Question
AT LOW SPEED, WHAT ENGINES HAVE BETTER ECONOMY? REF.: AC 65-12A, PAGE 3.
Answer
  • THE RECIPROCATING AND TURBOPROPELLER ENGINES HAVE BETTER ECONOMY THAN THE TURBOJET ENGINES.
  • THE RECIPROCATING AND TURBOJET ENGINES HAVE BETTER ECONOMY THAN THE TURBOPROPELLER ENGINES.
  • THE TURBOPROPELLER ENGINES HAVE BETTER ECONOMY THAN THE TURBOJET AND RECIPROCATING ENGINES.
  • AT LOW SPEED ALL ENGINES BURN THE SAME QUANTITY OF FUEL.

Question 8

Question
AT WHAT SPEED IS SAFER TO TAKEOFF AND LAND? REF.: FAA-H-8083-30, PAGE 4-1.
Answer
  • IS SAFER TO TAKEOFF AND LAND AT LOWER AIRSPEEDS THAN AT HIGHER SPEEDS.
  • IS SAFER TO TAKEOFF AND LAND AT HIGHER AIRSPEEDS THAN AT LOWER SPEEDS.
  • THE SAFEST TAKEOFF AND LANDING SPEED DEPEND ON PILOT'S ABILITY.
  • THE SAFER TAKEOFF AND LANDING SPEEDS DEPEND ON THE AIRPLANE MODEL.

Question 9

Question
BY THE USE OF WHAT IS THE MASS OF AIR ACCELERATED WITHIN THE ENGINE? REF.: AC 65-12A, PAGE 65.
Answer
  • BY A CONTINUOUS-FLOW CYCLE.
  • BY A COMPRESSOR.
  • BY A TURBINE.
  • BY TWO AXLES.

Question 10

Question
BASICALLY, WHAT ARE THE MAJOR SECTIONS OF A LARGE SINGLE-ROTOR HELICOPTER? REF.: AC 65-15A, PAGE 24.
Answer
  • THE ROTORS AND THE MAIN STRUCTURE.
  • THE TAIL CONE AND THE FUSELAGE.
  • THE CABIN AND THE TAIL CONE.
  • THE CABIN AND THE CARGO COMPARTMENT.

Question 11

Question
BY WHAT MEANS METALS CAN BE JOINED? REF.: AC 65-15A, PAGE 247.
Answer
  • BY ANY MEANS LIKE BOLTING, RIVETING, WELDING, BRAZING, SOLDERING OR ADHESIVE BONDING.
  • BY AUTOMATIC MEANS LIKE BOLTING, RIVETING, SOLDERING MACHINE OR ADHESIVE BONDING MACHINE.
  • BY ELECTRICAL MEANS LIKE WELDING, BRAZING, SOLDERING OR ADHESIVE BONDING.
  • BY MECHANICAL MEANS LIKE BOLTING, RIVETING, WELDING, BRAZING, SOLDERING OR ADHESIVE BONDING.

Question 12

Question
BY WHICH METHODS ARE NUTS, BOLTS, AND SCREWS SAFETIED WITH WIRE? REF.: FAA-H-8083-30, PAGE 5-80.
Answer
  • BY THE SHORT WIRE OR LONG AND EXTRA LONG WIRE METHOD.
  • BY THE SINGLE WIRE FOR ELECTRICAL CONNECTORS OR DOUBLE TWIST METHOD FOR PLUG AND BOLTS.
  • BY THE SINGLE WIRE OR DOUBLE TWIST METHOD.
  • BY THE TRIPLE WIRE OR UNIQUE TWIST METHOD.

Question 13

Question
DURING HOVERING FLIGHT IN A NO-WIND CONDITION, HOW IS THE TIP-PATH PLANE? REF.: AC 65-15A, PAGE 50.
Answer
  • DEPEND ON THE PILOT SKILL.
  • HORIZONTAL, THIS IS VERTICAL TO THE GROUND.
  • VERTICAL, THIS IS PARALLEL TO THE GROUND.
  • HORIZONTAL, THIS IS PARALLEL TO THE GROUND.

Question 14

Question
DURING VERTICAL FLIGHT IN A NO-WIND CONDITION, HOW DO LIFT AND THRUST FORCES ACT? REF.: AC 65-15A, PAGE 50.
Answer
  • VERTICALLY UPWARD.
  • VERTICALLY DOWNWARD
  • HORIZONTALLY UPWARD.
  • HORIZONTALLY DOWNWARD.

Question 15

Question
FROM WHAT METAL ARE REAMERS MADE? REF.: FAA-H-8083-30, PAGE 9-13.
Answer
  • THEY ARE MADE FROM EITHER VANADIUM TOOL STEEL OR HIGH-POWER STEEL.
  • THEY ARE MADE FROM EITHER CARBON TOOL STEEL OR HIGHSPEED STEEL.
  • THEY ARE MADE FROM HARD TEMPERED STEEL.
  • THEY ARE MADE FROM EITHER CROMO NIQUEL VANADIUM STEEL OR LOW-SPEED STEEL.

Question 16

Question
FROM WHAT ALLOYS ARE SOME WING PANELS FABRICATED? REF.: FAA-H-8083-30, PAGE 5-9.
Answer
  • FROM COPPER ALLOYS.
  • FROM IRON ALLOYS.
  • FROM MAGNESIUM ALLOYS.
  • FROM TITANIUM ALLOYS.

Question 17

Question
HOW ARE AIRCRAFT DRAWINGS CONSIDERED? REF.: FAA-H-8083-30, PAGE 2-2.
Answer
  • EXPENSIVE AND VALUABLE.
  • IMPORTANT AND SECURE.
  • INVALUABLE AND CHEAPER.
  • GOODS AND HELPFUL.

Question 18

Question
HOW ARE NEUMATIC SYSTEMS PROTECTED AGAINST DIRT? REF.:AC 65-15A, PAGE 335.
Answer
  • BY MEANS OF VARIOUS TYPES OF VALVES.
  • BY MEANS OF VARIOUS TYPES OF FILTERS.
  • BY MEANS OF VARIOUS TYPES OF PACKING AND O-RINGS.
  • BY MEANS OF VARIOUS TYPES OF LIQUIDS.

Question 19

Question
HOW ARE MOST HELICOPTERS STRUCTURAL MEMBERS COMPARED WITH THOSE USED IN FIXED WING AIRCRAFT? REF.: AC 65-15A, PAGE 24.
Answer
  • ARE VERY DIFFERENT.
  • ARE THE SAME.
  • ARE SIMILAR.
  • ARE IDENTICAL.

Question 20

Question
HOW ARE THE CONTROL SURFACES OF SOME AIRCRAFT COVERED? REF.: AC 65-15A, PAGE 18.
Answer
  • ARE COMPOSITE COVERED.
  • ARE FABRIC COVERED.
  • ARE FABRIC AND METAL COVERED.
  • ARE PLASTIC, FABRIC, METAL AND COMPOSITE COVERED.

Question 21

Question
HOW ARE THE METHODS OF REPAIRING STRUCTURAL PORTIONS OF AN AIRCRAFT? REF.: AC 65-15A, PAGE 127.
Answer
  • THE METHODS ARE SPECIFIC BY EACH AIRCRAFT MODEL.
  • THE METHODS ARE NUMEROUS AND VARIED.
  • THE METHODS DEPEND THE CMA CATEGORY.
  • THE METHODS ARE SPECIFIC FOR EACH COUNTRY.

Question 22

Question
HOW ARE USED IN EVERYDAY CONVERSATION THE WORDS SPEED AND VELOCITY? REF.: FAA-H-8083-30, PAGE 3-16.
Answer
  • SPEED LIKE QUICKLY AND VELOCITY LIKE FAST.
  • LIKE SYNONYM.
  • AS IF THEY MEAN THE SAME THING.
  • AS THEY WERE DIFFERENT THING.

Question 23

Question
HOW ARE USUALLY ATTACHED THE NONSTRUCTURAL MEMBERS THAT ARE NOT REMOVABLE FROM THE HELICOPTER? REF.: AC 65-15A, PAGE 25.
Answer
  • THEY ARE ATTACHED BY BOLTING OR STRUCTURAL WELDING.
  • THEY ARE ATTACHED BY RIVETING OR SPOT WELDING.
  • THEY ARE ATTACHED BY GLUEING OR SPOT WELDING.
  • THEY ARE ATTACHED BY SOLDERING, BOLTING, RIVETING OR ANY KIND OF WELDING.

Question 24

Question
HOW CAN AIRCRAFT FINISH BE CLASSIFIED? REF.: AC 65-15A, PAGE 113.
Answer
  • DECORATIVE, PROTECTIVE AND PRESERVER.
  • APPEARANCE, PRIMER AND PAINT.
  • PROTECTIVE, ANTI-DETERIORATION AND FINISH.
  • PROTECTIVE, APPEARANCE AND DECORATIVE.

Question 25

Question
HOW CAN COMPOSITES MATERIAL BE MADE? REF.: FAA-H-8083- 30, PAGE 5-34.
Answer
  • LIKE A SANDWICH STRUCTURE.
  • LAMINATED OR PLAIN.
  • WITH OR WITHOUT AN INNER CORE OF MATERIAL.
  • WITH OR WITHOUT AN EXTERNAL CORE OF MATERIAL

Question 26

Question
HOW CAN MAGNETO IGNITION SYSTEMS BE CLASSIFIED? REF.: AC 65-12A, PAGE 177.
Answer
  • PRIMARY AND SECONDARY.
  • HIGH CURRENT AND LOW CURRENT.
  • HIGH IGNITION AND LOW IGNITION.
  • HIGH TENSION AND LOW TENSION.

Question 27

Question
HOW DO CHANGES TAKE PLACE WITH SUPERSONIC FLOW IN VELOCITY, PRESSURE, TEMPERATURE, DENSITY AND FLOW DIRECTION? REF.: AC 65-15A, PAGE 59.
Answer
  • THE CHANGES TAKE PLACE SUDDENLY AND OVER A SHORT DISTANCE.
  • THE CHANGES TAKE PLACE SMOOTHLY AND OVER A SHORT DISTANCE.
  • THE CHANGES TAKE PLACE SMOOTHLY AND OVER A LONG DISTANCE.
  • THE CHANGES TAKE PLACE OVER ALL THE AIRFOIL.

Question 28

Question
HOW DOES THE AIR FLOW OVER THE UPPER SURFACE OF AN AIRFOIL ACT, WHEN ITS SPEED OR VELOCITY INCREASES? REF.: AC 65-15A, PAGE 29.
Answer
  • THE PRESSURE INCREASES.
  • THE PRESSURE DECREASES.
  • THE AREA INCREASES.
  • THE VELOCITY AFFECTS THE PRESSURE.

Question 29

Question
HOW DO LIQUIDS AND GASES ACT AND HOW ARE BOTH CLASSIFIED? REF.: FAA-H-8083-30, PAGE 3-27.
Answer
  • BOTH ACT AS GASES AND ALSO ACT AS LIQUID.
  • BOTH ACT AS LIQUIDS AND ACT IN A VERY DISSIMILAR WAY.
  • BOTH ACT AS FLUIDS AND ACT IN A VERY DIFFERENT WAY.
  • BOTH ACT AS FLUIDS AND ACT IN A VERY SIMILAR WAY.

Question 30

Question
HOW DOES THE ENVIRONMENT AFFECT THE CONDITIONS UNDER WHICH AN AIRCRAFT IS MAINTAINED AND OPERATED? REF.: FAAH-8083-30, PAGE 6-7.
Answer
  • THE ENVIRONMENT AFFECTS GREATLY THE CORROSION CHARACTERISTICS.
  • THE ENVIRONMENT AFFECTS ONLY MINIMALLY THE CORROSION CHARACTERISTICS.
  • THE ENVIRONMENT DOES NOT AFFECT THE CORROSION CHARACTERISTICS.
  • THE SALT WATER AND NOT THE ENVIROMENT AFFECTS GREATLY THE CORROSION CHARACTERISTICS.

Question 31

Question
HOW IS CALLED THE GEAR WITH THE IMPUT FORCE? REF.: FAA-H-8083-30, PAGE 3-11.
Answer
  • IS CALLED THE MAIN GEAR.
  • IS CALLED THE DRIVE GEAR.
  • IS CALLED THE DRIVEN GEAR.
  • IS CALLED THE FIRST CLASS GEAR.

Question 32

Question
HOW DO MOST OF THE FORCES ACT ON THE FUSELAGE OF AN AIRCRAFT WHILE IT TAKES OFF? REF.: AC 65-15A, PAGE 131.
Answer
  • ACTS IN THE SAME DIRECTION.
  • ACTS IN THE OPPOSITE DIRECTION.
  • ACTS INDIVIDUALLY.
  • THE FORCES DO NOT AFFECT THE FUSELAGE.

Question 33

Question
HOW DO STRESSES USUALLY ACT? REF.: AC 65-15A, PAGE 132.
Answer
  • THEY ACT BREAKING THE PIECES THAN DO NOT HAVE RIGHT TORQUE.
  • THEY ACT IN A HORIZONTAL MANNER.
  • THEY ACT IN COMBINATION RATHER THAN SINGLY.
  • THEY ACT SINGLY RATHER THAN IN COMBINATION.

Question 34

Question
HOW FREQUENTLY ARE ALUMINUM ALLOY SHEETS MARKED? REF.: FAA-H-8083-30, PAGE 5-23.
Answer
  • EVERY FIVE INCHES OF MATERIAL.
  • EVERY SQUARE METER OF MATERIAL.
  • EVERY SQUARE FOOT OF MATERIAL
  • EVERY SQUARE INCH OF MATERIAL.

Question 35

Question
HOW HAS THE AIRCRAFT TO BE WEIGHED WITH RESPECT TO FUEL? REF.: FAA-H-8083-30, PAGE 4-16.
Answer
  • DEPENDS ON THE SCALE RANGE.
  • ONLY WITH EMPTY TANKS AND LINES.
  • ONLY WITH FULL FUEL IN THE TANKS AND LINES.
  • ONLY WITH RESIDUAL FUEL IN THE TANKS AND LINES.

Question 36

Question
HOW IS CALLED THE AMOUNT OF FORCE ACTING ON A SPECIFIC AMOUNT OF SURFACE AREA? REF.: FAA-H-8083-30, PAGE 3-24.
Answer
  • POWER.
  • PRESSURE
  • FORCE.
  • QUANTITY.

Question 37

Question
HOW IS CALLED THE MOVEMENT ABOUT THE LONGITUDINAL AXIS? REF.: AC 65-15A, PAGE 55.
Answer
  • MOVEMENT.
  • YAW.
  • PITCH.
  • ROLL.

Question 38

Question
HOW IS CALLED THE BASIC BODY AND TAIL BOOM SECTIONS OF A TYPICAL HELICOPTER? REF.: AC 65-15A, PAGE 24.
Answer
  • MONOCOQUE.
  • REINFORCED.
  • STANDARD.
  • CONVENTIONAL.

Question 39

Question
HOW IS CALLED THE SMALLEST PARTICLE OF MATTER THAT CAN EXIST AND STILL RETAIN ITS IDENTITY? REF.: FAA-H-8083-30, PAGE 10-1.
Answer
  • THE ATOM.
  • THE MOLECULE.
  • THE ELECTRON.
  • THE PROTON.

Question 40

Question
HOW IS EACH TYPE OF RIVETS IDENTIFIED? REF.: FAA-H-8083-30, PAGE 5-59.
Answer
  • BY ITS COLOR.
  • BY A PART NUMBER.
  • BY ITS FORM.
  • BY ITS HEAD.

Question 41

Question
HOW IS CALLED THE TENDENCY OF AN OBJECT TO REMAIN STATIONARY WHEN SUPPORTED FROM ITS OWN CENTER OF GRAVITY? REF.: AC 65-15A, PAGE 82.
Answer
  • DYNAMIC BALANCE.
  • STATIC BALANCE.
  • TRIM TABS BALANCE.
  • BALANCED CONDITION.

Question 42

Question
HOW IS DEFINED MOTION? REF.: FAA-H-8083-30, PAGE 3-16.
Answer
  • IS A CONTINUED CHANGE OF POSITION OR PLACE.
  • IS CONTINUED CHANGE OF MASS AND DIAMETER.
  • IS AN ALTERATION IN POSITION OR PLACE.
  • IS SPEED OR VELOCITY.

Question 43

Question
HOW IS POSSIBLE TO OBTAIN A MOMENT IN WEIGHT AND BALANCE? REF.: FAA-H-8083-30, PAGE 4-3.
Answer
  • DIVIDING THE WEIGHT BY ITS DISTANCE.
  • MULTIPLING THE WEIGHT BY ITS DISTANCE.
  • WEIGHING ALL THE ITEMS.
  • WEIGHING THE ENTIRE AIRPLANE.

Question 44

Question
HOW IS POTENTIAL ENERGY DEFINED? REF.: FAA-H-8083-30, PAGE 3-3.
Answer
  • ENERGY THAT IS POWERFUL.
  • ENERGY THAT HAS HIGH POWER.
  • ENERGY THAT IS IN MOTION OR ENERGY THAT IS READY TO BE USED.
  • ENERGY THAT IS AT REST OR ENERGY THAT IS STORED.

Question 45

Question
HOW IS THE PROCEDURE FOR WELDING STAINLESS STEEL COMPARED WITH THE PROCEDURE FOR WELDING CARBON STEELS? REF.: AC 65-15A, PAGE 259.
Answer
  • IT IS EXACTLY THE SAME.
  • IT IS BASICALLY THE SAME.
  • IT COULD BE THE SAME.
  • BOTH PROCEDURE ARE ABSOLUTELY DIFFERENT.

Question 46

Question
HOW IS THE IMPELLER WITHIN THE DIFFUSER CHAMBER LOCATED? REF.: AC 65-12A, PAGE 77.
Answer
  • IS LOCATED LIKE A DIFFUSER.
  • IS LOCATED PERPENDICULARLY
  • IS LOCATED PARALLEL.
  • IS LOCATED CENTRALLY.

Question 47

Question
HOW IS THE STABILIZER USUALLY BUILT? REF.: AC 65-15A, PAGE 24.
Answer
  • LIKE AN AIRCRAFT FLAP, WITH SCREWS AND DEFLECTORS.
  • LIKE AN AIRCRAFT WING, WITH RIBS AND SPARS.
  • LIKE AN AIRCRAFT FUSELAGE, WITH LONGERONS AND RIBS.
  • IT IS BUILT LIKE A LANDING GEAR.

Question 48

Question
HOW IS THE VELOCITY OF THE AIR AS IT FLOWS THROUGH THE VENTURI OF A CARBURATOR? REF.: AC 65-12A, PAGE 119.
Answer
  • THE VELOCITY INCREASES.
  • THE VELOCITY DECREASES.
  • THE PRESSURE INCREASES.
  • THE PRESSURE AFFECTS THE SPEED.

Question 49

Question
DURING HOVERING FLIGHT IN A NO-WIND CONDITION, HOW IS THE TIP-PATH PLANE? REF.: AC 65-15A, PAGE 50.
Answer
  • DEPEND ON THE PILOT SKILL.
  • HORIZONTAL, THIS IS VERTICAL TO THE GROUND.
  • VERTICAL, THIS IS PARALLEL TO THE GROUND.
  • HORIZONTAL, THIS IS PARALLEL TO THE GROUND.

Question 50

Question
DURING HOVERING FLIGHT IN A NO-WIND CONDITION, HOW IS THE TIP-PATH PLANE? REF.: AC 65-15A, PAGE 50.
Answer
  • DEPEND ON THE PILOT SKILL.
  • HORIZONTAL, THIS IS VERTICAL TO THE GROUND.
  • VERTICAL, THIS IS PARALLEL TO THE GROUND.
  • HORIZONTAL, THIS IS PARALLEL TO THE GROUND.
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