DGCA PAPER 3 (HA) OCT 2014 1.whain a safty switch on a main gear strut at liftoff ,its deactivated . 1)lending gear position unit 2)antiskid system 3)aural warning sys. 4)none 2.in an antiskid system ,wheel skid is detected bt 1)an electrical sensor 2)discrinirator 3)rise in brake pr. 3.what is used as a temperature sensing eliment in windshield ? 1)thermocouple 2)thermistor 3)Throswitch 4)all 4.In a ke antiskid system whan a/c an approaching skid is sensed, electrical signal is sent to skid valve. 1)bypass the hydraulic pr. 2)Relieves the hydraulic pressure on brake. 3)Equalizes the hydraulic pr. 4)None 4.atypicl takeoff warning indicator system in addition to throttle setting monitars the position of 1)alirons ,elevator ,speed prake 2),speed prakestabilizer trim 3)elevator ,speed brake ,flap.and , stabilizer trim 4)none 5.the angle of attack detector operation from differntial pr. 1)is not perllel to the true angle of attack of aircraft. 2) 3) 6.antiskid braking system are normally armed by. 1)centrifugal switch. 2)switch in cockpit 3)rotation on wheel. 7.landing gear warning system provided . 1)red for unsafe 2)green light for gear dawn 3)red light for unsafe gear,green light for gear dawn, no light for gear up 9.what are leanding gear warning divices incorporated in retraction lending gear 1)a horn or other aural devise &red warning light 2) 3) 10.in most modern hydraulically actuated landing gear system in order to door sequence by.andoprate least pressure. 1. sequence v/v 2. 3. 11. The Yaw damper controls the adverse yaw by moving 1) The rudder in a direction same as that of the pedal movement 2) Opposite to the direction of movement of Rudder a small amount 3) In the direction of control stick movement 4) All of the above 12. Where is the fuselage station 183 located? 1) 183 cm aft of the zero datum 2) 183 inch aft of the zero datum/Reference line 3) 183.7 inch aft of the Zero datum/Reference line 4) 183 mm forward of the Datum line 13. Which tabs are actuated in flight to make the control surfaces to move in a direction opposite to the movement of the tabs? 1) Trim tab 2) Servo tab 3) Spring tab 4) Balance tab 14. Color of Oxygen Lines is.. 1) green strip 2) green and brawn 3) yellow 15. What precaution should be taken during the inflation of aircraft tires? 1) Use a tire cage guard to avoid possible injuries 2) .. 3) .Always take care to use Nitrogen for inflating tires. 4) All of the above 16. The oil level in an Air-oil strut is checked by 1) Releasing the air pressure and checking the level of fluid near the filler plug 2) Fully extending the landing gear and checking using a gauge 3)........... 4).............. 17. Normally, heavy aeroplanes are towed 1) Forward by attaching a tow bar to the nose wheel 2) Rearward by attaching towing wires to the main landing wheels 3) Rearward by attaching the tow bar to the tail landing gear 18. The pre-load pressure of the accumulator will be ______ as the system pressure 1) Same 2) Twice 3) One third 4) Half 19. Among the following, which one is the correct sequence for bonding the aircraft when fuelling? 1) Bond aircraft to ground first then aircraft to fuelling truck 2) Bond aircraft to ground then ground the truck and then bond the aircraft to the fuelling truck 3) Ground aircraft and bond the fuel nozzle to the aircraft then open the fuelling panel 20. In vapor cycle cooling system, the cabin air loses the heat and get cooled when passing through _____ 1) Evaporator 2) Condensor 3) Expansion valve 4) Expansion turbine 21. In heavy aeroplanes, the engine mounts are made up of 1) Chrome-molebdenum steel 2) Nickel-chrome steel 3) Forging of Chrome-Molebdenum steel 4) All of the above 22. Sweep back of a wing is the angle between 1) A line perpendicular to the fuselage centre line and the quarter of chords. 2) A line parallel to the fuselage centre line and the quarter of the chords. 23. The response of the aircraft to the pilots action when the pilot maneuvers the aircraft 1 .Maneuvarability 2.stablity 3. 24. Which is the directing factor of stalling? 1) Angle of attack 2) Aerofoil speed 3) Aerofoil shape 4) All of the above 25. The deformation on an object due to stress is called 1) Strain 26. When not steering the aircrafts nose wheel, the nose wheel steering actuators act as 1) Shimmy dampers 27. When the aircraft is on ground, the positive pressure in the cabin is discharged out by opening 1) Dump valve 2) Outflow valve 3) Negative pressure relief valve 28. The design which allows the operation of a component which is failed but the load is taken by the adjusent part upto a period of time is known as 1) Failsafe design 2) Safe life 29. Find the dimensions of the rivet MS 20426AD-4-4 1) 100 degree countersunk 2117, 1/8, 1/4 30. The check tocarried out to determine whether the aircraft components are propely aligned or not 1) Symmetry check 2) Rigging 31. If the aircraft with an eastern heading accelerates, the compass will have an apparent turn towards 1) North 2) South 3) North-East 31. Which valve installed in a hydraulic system will have the highest pressure setting? 1) Pressure relief valve 2) Thermal relief valve 3) Main relief valve 32. If the hole of rivet is found to be dent due to the forces acting on the rivet and the rivet is still not damaged, the failure is 1) Shear 2) Bearing 3) Torsional 33.In modern pressurized A/c generally used lest complicated or less maintenance oxygen system is. 1)chemical oxygen generator system ( Solid state oxygen) 2) Diluter demand type 3) Gaseous state oxygen 4) Continuous flow system 34) In modern A/C lateral stability is achieved by 1) Use of sweep back 2) By use of longitudinal dihedral 3) Use of incidence 4) Use of angle of attack 35.In A/C const pressure hydraulic system cycles more frequently than usal and no fluid leakage can be detected the most probable cause is 1) High relief valve setting 2) Pump volume output too high 3) low accumulator air pre load 4) Obstruction in reservoir line 36.What type of inspection should br used to check for water in the honeycomb structure of a composite is :- 1)Magnectic Particle inspection. 2)Coin tap. 3)shake and listen for sound of water. 4)x-ray (radiography). 37.MTCS regarding anodizing, 38. Fire extinguisher used for aircraft fire detection 1. rate of temperature rise 2. radiation type 2. over heat detector 4. all 39. one method of inspecting a laminated fiberglass structure to damage ? 1)strip the age area of all paint &shine a strong light through the structure. 40.which is the material lear used which is used the vacuum bag pressure system to absorb excess resin. 1)Bleeder 41.prefect way to make permanent repair on composite is by help of. ( Two times ) 1)laminating n new repair plies 42.which of the following are generally characteristic of aramide (kevlar) fiber composites is.? 1) high tensile strength 2) flexible both 1&2 3)stiffness 4)corrosive with aluminium 5)ability to conduct electricity 43.good practice concerning the installation of acrylic plastic. 1)when rivet are used, adequate spacer or other satisfactory means to prevent excessive tightening 44.the type of bit should be used to drill holes in Plexiglas . 1)a specially modified twist drill. 45.41.prefect way to make permanent repair on composite is by help of 1)laminating n new repair plies 46. in right wing of monoplane is improperly rigged to grater (AOI) than designated in the manufacture will cause? 1)airplane to be off balance both laterally & directionally 47.the purpose of wing stall strip is to .? 1)reduce stalling speed 2)decrease drag 3)increase speed on takeoff. 4)both 1&3 48. whenimpacting control cable turnbuckle for proper installation determine that. 1)thesafety wire end are wrapped a minimum of fore turns around the terminal & shanks 49.when used closed proximity magnetic compass . cotter pins made of. 1) corrosion resistance steel 50.aicraft flight control trim system must be designed and installed so that . 1) pilot can determine the relative position of the trim tab from cocpit. 51.Movement of the cockpit control toward the nosedown position during ground operational check of the elevator trim tab system will cause the trailing edge of the trim tab to move in which direction ? 1.Upward regardless of elevator position. 52.A tension regulator in the flight control cable system of a large all metal aircraft is used primarily to 1.retain a set tension 53.To prevent a very rapid extention of olio shock strut after intetial compression resulting from lending gear impact. 1)a various types of valves or orifices are used which restrict the fluid flow. 54.the power boost brake system are used on aircraft that have. 1)high landing speed. 55.ensure operation of the landing gear and gear doors in the proper order to control which valve. 1) sequence valve 56.Which of the following is adversely affected by atmospheric humidity if left unprotected? 1. MIL-H-5606 hydraulic fluid. 2. Skydrol hydraulic fluid. 3. None of the above. A) 1 and 2. 57.The primary function of the flap overload valve is to A) prevent the flaps from being lowered at airspeeds which would impose excessive structural loads. B) cause the flap segments located on opposite sides of the aircraft centerline to extend and retract together so that the aircraft will not become aerodynamically unbalanced to the extent that it becomes uncontrollable. C) boost normal system pressure to the flaps in order to overcome the air loads acting on the relatively large flap area. 58.Hydraulic system thermal relief valves are set to open at a A) lower pressure than the system relief valve. B) higher pressure than the system relief valve. C) lower pressure than the system pressure regulator. 59.DME operation all 60.A capacitance type fuel quantity indicating system , Capacitance affected by,. 1)area of plate. 61.what types of valve in used in brack actuating line to isolate the emergency to normal power brake control valve system is,? 1)a shuttle valve 62. purpose ofrelief valves in brake system is to. 1)compensate for thermal expansion 63.if the extended longitudinal axis of the main landing gear wheel assemblies intersect aft of the aircraft .the nose wheel can termed as 1)toe-out 63.the hydraulic packing seals are used in a landing gear shock strut are. 1)used only with a specific fluid 64.chines tires are used on some aircraft nose wheel is help. 1)deflect water away from the fuselage 65.which of the good hydraulic fluid properties . 1)low viscosity ,high flash point, high fire point, 66.if the aircrafts constant pressure hydraulic system cycles more frequently than usual than and no leakage can be detected .most probable caused is . 1)low accumulator are preload . 67.in variable displacement pump by means of regulated pressure. 1)pump have built-in component means of system regulation. 68.static friction test chack associated of which system’ 1)landinggear 2)flight control 3)engine. 69. which rubber seals are used oil hose lining with aromatic fluid .(9a) 1)Thiokol 70.the air that expended & no longer needed when an actuating unit is a pneumatic system is . 1)exhausted or damped .usually overboard. 71.what is condition of the refrigerant inters in the condenser of vapor cycle cooling system.? 1)high pressure vapor 72.the electronic type fuel quantity indicating system consist of a. 1)an amplifier ,an indicator , & tank unit 72.an most commonly used in aircraft construction which is high stringht to weight ratio is .? 1)aluminum and manganese alloy 73.a chemical treatment for aluminum alloy to increase their corrosion resistance and pant bonding qualities .is..?(9A CARROSION) 1)anodizing 2)alodizing 3)AL coating 4)all 74.whain a steel tubler fuselage is fast welded to indused stains , the strcture heated avabe critical temp. and cool still air which process. 1) Normalizing. 75. A Black smoky from some rivet head on the aircraft indicates. 1)fritting corrosion, in rivet and skin. 76.the v/v used to control sequence of opreration of lending gear retraction and wheel actuation .it require lest pressure . 1)priority valve 2)sequence valve 3) both 77.thechack to determine major component of aircraft are their proper basic alignment is called .(jappsion) 1) symmetry 2) rigging 78. the dihedral wing affect the . 1)lateral stability 79.yow damper opposite direction 80compensetor inlet port 81. a safety precaution in composites to dissipate static charge. 1)resin are evaporate, in their no current path providing. 82. ACM 83.nose dawn ……..horizontal stabilizer trim up 84.if all three system are faild …..emergency power. 1.accumalor 2 rat 85.in large transport aircraft dampar are used. 1)stearing the a/c in taxing 2)alsoobsarbe seeming at time of lending and takeoff. 3both.. 86.inpnamatic system ,water accumulated but not drain. 1)soniled valve foulty. 87.parpose of nessals in large aircraft. 88.tarn and bank indicator if aircraft pitch up. 1)line below the fuselage. 89.aicraft passing through turbulences check 1)wing to fuselage joint ant stabilizer 90. grounding procedure the aircraft and fuel bowser togather.(9A) 91.Aircraft passing through turbulence Ans.. 92.the stating a gas turbine engine (9a)/ 1constnt current variable voltage. 2variable voltage 3115v 400hz ac 4.all. 93. a which point laminar air to convertturbulences.? 1)transition point BY……….Surendra Yadav, Vikee-Lavagale , anil reddy
Posted on: Tue, 23 Dec 2014 11:59:34 +0000
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