jose Ramirez
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Last Update: January 2015 Examen para obtener licencia de mecánico de mantenimiento 300 preguntas.

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jose Ramirez
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Examen Ingles DGAC 251-300

Question 1 of 50

1

ABSOLUTE PRESSURE IS EQUAL TO REF.: FAA-H-8083-30, PAGE 3-25.

Select one of the following:

  • ATMOSPHERIC PRESSURE.

  • INSTRUMENT PRESSURE.

  • GAUGE PRESSURE PLUS ATMOSPHERIC PRESSURE.

  • GAUGE PRESSURE MINUS ATMOSPHERIC PRESSURE.

Explanation

Question 2 of 50

1

ALL METALS AND ALLOYS ARE ELECTRICALLY ACTIVE AND HAVE REF.: FAA-H-8083-30, PAGE 6-3.

Select one of the following:

  • A SPECIFIC WEIGHT.

  • A SPECIFIC STRENGTH.

  • A SPECIFIC CORROSION RESISTANCE.

  • A SPECIFIC ELECTRICAL POTENTIAL.

Explanation

Question 3 of 50

1

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.

Select one of the following:

  • 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.

Explanation

Question 4 of 50

1

AROUND WHAT IS AN AIRPLANE CONTROLLED IN FLIGHT? REF.: FAA-H-8083-30, PAGE 3-42.

Select one of the following:

  • 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.

Explanation

Question 5 of 50

1

AS A GENERAL RULE, WHAT WILL BE THE RIVET DIAMETER IN A REPAIR WORK? REF.: AC 65-15A, PAGE

Select one of the following:

  • 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.

Explanation

Question 6 of 50

1

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.

Select one of the following:

  • DEPENDS ON THE PROPORTION.

  • DOES NOT VARY.

  • VARIES INVERSELY.

  • VARIES DIRECTLY.

Explanation

Question 7 of 50

1

AT LOW SPEED, WHAT ENGINES HAVE BETTER ECONOMY? REF.: AC 65-12A, PAGE 3.

Select one of the following:

  • 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.

Explanation

Question 8 of 50

1

AT WHAT SPEED IS SAFER TO TAKEOFF AND LAND? REF.: FAA-H-8083-30, PAGE 4-1.

Select one of the following:

  • 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.

Explanation

Question 9 of 50

1

BY THE USE OF WHAT IS THE MASS OF AIR ACCELERATED WITHIN THE ENGINE? REF.: AC 65-12A, PAGE 65.

Select one of the following:

  • BY A CONTINUOUS-FLOW CYCLE.

  • BY A COMPRESSOR.

  • BY A TURBINE.

  • BY TWO AXLES.

Explanation

Question 10 of 50

1

BASICALLY, WHAT ARE THE MAJOR SECTIONS OF A LARGE SINGLE-ROTOR HELICOPTER? REF.: AC 65-15A, PAGE 24.

Select one of the following:

  • THE ROTORS AND THE MAIN STRUCTURE.

  • THE TAIL CONE AND THE FUSELAGE.

  • THE CABIN AND THE TAIL CONE.

  • THE CABIN AND THE CARGO COMPARTMENT.

Explanation

Question 11 of 50

1

BY WHAT MEANS METALS CAN BE JOINED? REF.: AC 65-15A, PAGE 247.

Select one of the following:

  • 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.

Explanation

Question 12 of 50

1

BY WHICH METHODS ARE NUTS, BOLTS, AND SCREWS SAFETIED WITH WIRE? REF.: FAA-H-8083-30, PAGE 5-80.

Select one of the following:

  • 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.

Explanation

Question 13 of 50

1

DURING HOVERING FLIGHT IN A NO-WIND CONDITION, HOW IS THE TIP-PATH PLANE? REF.: AC 65-15A, PAGE 50.

Select one of the following:

  • 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.

Explanation

Question 14 of 50

1

DURING VERTICAL FLIGHT IN A NO-WIND CONDITION, HOW DO LIFT AND THRUST FORCES ACT? REF.: AC 65-15A, PAGE 50.

Select one of the following:

  • VERTICALLY UPWARD.

  • VERTICALLY DOWNWARD

  • HORIZONTALLY UPWARD.

  • HORIZONTALLY DOWNWARD.

Explanation

Question 15 of 50

1

FROM WHAT METAL ARE REAMERS MADE? REF.: FAA-H-8083-30, PAGE 9-13.

Select one of the following:

  • 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.

Explanation

Question 16 of 50

1

FROM WHAT ALLOYS ARE SOME WING PANELS FABRICATED? REF.: FAA-H-8083-30, PAGE 5-9.

Select one of the following:

  • FROM COPPER ALLOYS.

  • FROM IRON ALLOYS.

  • FROM MAGNESIUM ALLOYS.

  • FROM TITANIUM ALLOYS.

Explanation

Question 17 of 50

1

HOW ARE AIRCRAFT DRAWINGS CONSIDERED? REF.: FAA-H-8083-30, PAGE 2-2.

Select one of the following:

  • EXPENSIVE AND VALUABLE.

  • IMPORTANT AND SECURE.

  • INVALUABLE AND CHEAPER.

  • GOODS AND HELPFUL.

Explanation

Question 18 of 50

1

HOW ARE NEUMATIC SYSTEMS PROTECTED AGAINST DIRT? REF.:AC 65-15A, PAGE 335.

Select one of the following:

  • 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.

Explanation

Question 19 of 50

1

HOW ARE MOST HELICOPTERS STRUCTURAL MEMBERS COMPARED WITH THOSE USED IN FIXED WING AIRCRAFT? REF.:
AC 65-15A, PAGE 24.

Select one of the following:

  • ARE VERY DIFFERENT.

  • ARE THE SAME.

  • ARE SIMILAR.

  • ARE IDENTICAL.

Explanation

Question 20 of 50

1

HOW ARE THE CONTROL SURFACES OF SOME AIRCRAFT COVERED? REF.: AC 65-15A, PAGE 18.

Select one of the following:

  • ARE COMPOSITE COVERED.

  • ARE FABRIC COVERED.

  • ARE FABRIC AND METAL COVERED.

  • ARE PLASTIC, FABRIC, METAL AND COMPOSITE COVERED.

Explanation

Question 21 of 50

1

HOW ARE THE METHODS OF REPAIRING STRUCTURAL PORTIONS OF AN AIRCRAFT? REF.: AC 65-15A, PAGE 127.

Select one of the following:

  • 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.

Explanation

Question 22 of 50

1

HOW ARE USED IN EVERYDAY CONVERSATION THE WORDS SPEED AND VELOCITY? REF.: FAA-H-8083-30, PAGE 3-16.

Select one of the following:

  • SPEED LIKE QUICKLY AND VELOCITY LIKE FAST.

  • LIKE SYNONYM.

  • AS IF THEY MEAN THE SAME THING.

  • AS THEY WERE DIFFERENT THING.

Explanation

Question 23 of 50

1

HOW ARE USUALLY ATTACHED THE NONSTRUCTURAL MEMBERS THAT ARE NOT REMOVABLE FROM THE HELICOPTER? REF.: AC 65-15A, PAGE 25.

Select one of the following:

  • 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.

Explanation

Question 24 of 50

1

HOW CAN AIRCRAFT FINISH BE CLASSIFIED? REF.: AC 65-15A, PAGE 113.

Select one of the following:

  • DECORATIVE, PROTECTIVE AND PRESERVER.

  • APPEARANCE, PRIMER AND PAINT.

  • PROTECTIVE, ANTI-DETERIORATION AND FINISH.

  • PROTECTIVE, APPEARANCE AND DECORATIVE.

Explanation

Question 25 of 50

1

HOW CAN COMPOSITES MATERIAL BE MADE? REF.: FAA-H-8083- 30, PAGE 5-34.

Select one of the following:

  • LIKE A SANDWICH STRUCTURE.

  • LAMINATED OR PLAIN.

  • WITH OR WITHOUT AN INNER CORE OF MATERIAL.

  • WITH OR WITHOUT AN EXTERNAL CORE OF MATERIAL

Explanation

Question 26 of 50

1

HOW CAN MAGNETO IGNITION SYSTEMS BE CLASSIFIED? REF.: AC 65-12A, PAGE 177.

Select one of the following:

  • PRIMARY AND SECONDARY.

  • HIGH CURRENT AND LOW CURRENT.

  • HIGH IGNITION AND LOW IGNITION.

  • HIGH TENSION AND LOW TENSION.

Explanation

Question 27 of 50

1

HOW DO CHANGES TAKE PLACE WITH SUPERSONIC FLOW IN VELOCITY, PRESSURE, TEMPERATURE, DENSITY AND FLOW
DIRECTION? REF.: AC 65-15A, PAGE 59.

Select one of the following:

  • 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.

Explanation

Question 28 of 50

1

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.

Select one of the following:

  • THE PRESSURE INCREASES.

  • THE PRESSURE DECREASES.

  • THE AREA INCREASES.

  • THE VELOCITY AFFECTS THE PRESSURE.

Explanation

Question 29 of 50

1

HOW DO LIQUIDS AND GASES ACT AND HOW ARE BOTH CLASSIFIED? REF.: FAA-H-8083-30, PAGE 3-27.

Select one of the following:

  • 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.

Explanation

Question 30 of 50

1

HOW DOES THE ENVIRONMENT AFFECT THE CONDITIONS UNDER WHICH AN AIRCRAFT IS MAINTAINED AND OPERATED? REF.: FAAH-8083-30, PAGE 6-7.

Select one of the following:

  • 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.

Explanation

Question 31 of 50

1

HOW IS CALLED THE GEAR WITH THE IMPUT FORCE? REF.: FAA-H-8083-30, PAGE 3-11.

Select one of the following:

  • IS CALLED THE MAIN GEAR.

  • IS CALLED THE DRIVE GEAR.

  • IS CALLED THE DRIVEN GEAR.

  • IS CALLED THE FIRST CLASS GEAR.

Explanation

Question 32 of 50

1

HOW DO MOST OF THE FORCES ACT ON THE FUSELAGE OF AN AIRCRAFT WHILE IT TAKES OFF? REF.: AC 65-15A, PAGE 131.

Select one of the following:

  • ACTS IN THE SAME DIRECTION.

  • ACTS IN THE OPPOSITE DIRECTION.

  • ACTS INDIVIDUALLY.

  • THE FORCES DO NOT AFFECT THE FUSELAGE.

Explanation

Question 33 of 50

1

HOW DO STRESSES USUALLY ACT? REF.: AC 65-15A, PAGE 132.

Select one of the following:

  • 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.

Explanation

Question 34 of 50

1

HOW FREQUENTLY ARE ALUMINUM ALLOY SHEETS MARKED? REF.: FAA-H-8083-30, PAGE 5-23.

Select one of the following:

  • EVERY FIVE INCHES OF MATERIAL.

  • EVERY SQUARE METER OF MATERIAL.

  • EVERY SQUARE FOOT OF MATERIAL

  • EVERY SQUARE INCH OF MATERIAL.

Explanation

Question 35 of 50

1

HOW HAS THE AIRCRAFT TO BE WEIGHED WITH RESPECT TO FUEL? REF.: FAA-H-8083-30, PAGE 4-16.

Select one of the following:

  • 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.

Explanation

Question 36 of 50

1

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

Select one of the following:

  • POWER.

  • PRESSURE

  • FORCE.

  • QUANTITY.

Explanation

Question 37 of 50

1

HOW IS CALLED THE MOVEMENT ABOUT THE LONGITUDINAL AXIS? REF.: AC 65-15A, PAGE 55.

Select one of the following:

  • MOVEMENT.

  • YAW.

  • PITCH.

  • ROLL.

Explanation

Question 38 of 50

1

HOW IS CALLED THE BASIC BODY AND TAIL BOOM SECTIONS OF A TYPICAL HELICOPTER? REF.: AC 65-15A, PAGE 24.

Select one of the following:

  • MONOCOQUE.

  • REINFORCED.

  • STANDARD.

  • CONVENTIONAL.

Explanation

Question 39 of 50

1

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

Select one of the following:

  • THE ATOM.

  • THE MOLECULE.

  • THE ELECTRON.

  • THE PROTON.

Explanation

Question 40 of 50

1

HOW IS EACH TYPE OF RIVETS IDENTIFIED? REF.: FAA-H-8083-30, PAGE 5-59.

Select one of the following:

  • BY ITS COLOR.

  • BY A PART NUMBER.

  • BY ITS FORM.

  • BY ITS HEAD.

Explanation

Question 41 of 50

1

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.

Select one of the following:

  • DYNAMIC BALANCE.

  • STATIC BALANCE.

  • TRIM TABS BALANCE.

  • BALANCED CONDITION.

Explanation

Question 42 of 50

1

HOW IS DEFINED MOTION? REF.: FAA-H-8083-30, PAGE 3-16.

Select one of the following:

  • 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.

Explanation

Question 43 of 50

1

HOW IS POSSIBLE TO OBTAIN A MOMENT IN WEIGHT AND BALANCE? REF.: FAA-H-8083-30, PAGE 4-3.

Select one of the following:

  • DIVIDING THE WEIGHT BY ITS DISTANCE.

  • MULTIPLING THE WEIGHT BY ITS DISTANCE.

  • WEIGHING ALL THE ITEMS.

  • WEIGHING THE ENTIRE AIRPLANE.

Explanation

Question 44 of 50

1

HOW IS POTENTIAL ENERGY DEFINED? REF.: FAA-H-8083-30, PAGE 3-3.

Select one of the following:

  • 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.

Explanation

Question 45 of 50

1

HOW IS THE PROCEDURE FOR WELDING STAINLESS STEEL COMPARED WITH THE PROCEDURE FOR WELDING CARBON
STEELS? REF.: AC 65-15A, PAGE 259.

Select one of the following:

  • IT IS EXACTLY THE SAME.

  • IT IS BASICALLY THE SAME.

  • IT COULD BE THE SAME.

  • BOTH PROCEDURE ARE ABSOLUTELY DIFFERENT.

Explanation

Question 46 of 50

1

HOW IS THE IMPELLER WITHIN THE DIFFUSER CHAMBER LOCATED? REF.: AC 65-12A, PAGE 77.

Select one of the following:

  • IS LOCATED LIKE A DIFFUSER.

  • IS LOCATED PERPENDICULARLY

  • IS LOCATED PARALLEL.

  • IS LOCATED CENTRALLY.

Explanation

Question 47 of 50

1

HOW IS THE STABILIZER USUALLY BUILT? REF.: AC 65-15A, PAGE 24.

Select one of the following:

  • 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.

Explanation

Question 48 of 50

1

HOW IS THE VELOCITY OF THE AIR AS IT FLOWS THROUGH THE VENTURI OF A CARBURATOR? REF.: AC 65-12A, PAGE 119.

Select one of the following:

  • THE VELOCITY INCREASES.

  • THE VELOCITY DECREASES.

  • THE PRESSURE INCREASES.

  • THE PRESSURE AFFECTS THE SPEED.

Explanation

Question 49 of 50

1

DURING HOVERING FLIGHT IN A NO-WIND CONDITION, HOW IS THE TIP-PATH PLANE? REF.: AC 65-15A, PAGE 50.

Select one of the following:

  • 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.

Explanation

Question 50 of 50

1

DURING HOVERING FLIGHT IN A NO-WIND CONDITION, HOW IS THE TIP-PATH PLANE? REF.: AC 65-15A, PAGE 50.

Select one of the following:

  • 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.

Explanation