M_11

Which parameter can change the value of the speed of sound?. the height of the source. the air temperature. the speed of the aircraf.

How pitch is also called?. longitudinal control. diagonal control. vertical control.

The swept wing is used: to increase the Mach number. to reduce the Mach number. to increase the lif.

According to what the subsonic flight, the transonic flight and the supersonic flight can be defined?. according to the duration of a flight. according to the aircraft maximum cruise speed. according to the Mach number.

Which of the following is a type of landing lights?. PAR 350-150W. PAR 50-200W. PAR 200-300W.

When the runway turnoff lights are activated?. during the taxiing phase and they are switched off when the aircraft reaches 10000 m. during the taxiing phase and they are switched off when the aircraft reaches the cruise altitude. during the taxiing phase and they are switched off when the aircraft reaches 10000 ft.

Which is the color of light that indicates a normal operative condition?. green. yellow. white.

The landing lights are generally located. on the landing gear. under the wing root. on the wing tip.

Which are the colors of the navigation lights?. blue, red, green. yellow, red, white. red, green, white.

The anti-collision aircraft lights mainly consist of: flashing rotating lights. steady green lights. steady white lights.

Which is the endurance of the oxygen system?. 15 minutes. 1 hour. 30 minutes.

The tank of "breathing oxygen aviators" is generally identified by. black colour. green colour. red colour.

The aircraft emergency oxygen system can be. electrolysis system. both. chemical.

A diluter/demand regulator of aircraft oxygen system: regulate the oxygen tanks pressure. regulates the oxygen percentage up to the altitude. regulates the oxygen percentage according to cabin demand.

Which of the following sentences is correct speaking of the pilot oxygen mask on military jet?. it is used only in emergency conditions. it always provides the same oxygen concentration. it provides a variable oxygen concentration according to altitude.

The oxygen system of aircraft must reach. all the crew. all the passengers. both.

Which material is used to make oxygen pipes?. rubber and plastic. metal and rubber. metal and plastic.

Chemical oxygen generators include a candle, which material is used to make it?. chlorate sodium. chlorate nitrogen. chlorate oxygen.

How is moved the isolation valve?. using a mechanical actuator. using an electrical actuator supplied with 115 V AC. using an hydraulic actuator.

The temperature of engine air bleeding is regulated. for high pressure bleeding. for low pressure bleeding. both.

Trough the control panel of pneumatic circuit, the pilot can control. both. the bleed valves. all temperature and pressure indicators.

Which is the most common technique for the air cooling in the pneumatic system?. by means of a refrigerating system. by means of a water-air heating exchanger. by means of an air-air heating exchanger.

The highest pressure of pneumatic compressed air is given by. both. the turbo-compressor. the volumetric compressor.

Which is the pressure range for air stored in metal bottles?. 30 - 40 psi. 10 - 20 psi. 1 - 3 psi.

The aircraft reusable liquid flush type toilet consists of: two water circuit (potable and WC water). a container with chemical mixture with toilet unit on the top. Elson type.

The aircraft quantity of potable water storage depend on. the aircraft type. the aircraft balancing range. the flight duration and passengers number.

How do wax based sealants operate?. they are directly sprayed on the panels. they are heated to liquefy and then they are poured on the panels. they are mixed with an activator and then they are sprayed on the panels.

Which is the average pressurization value for the potable water system?. 40 psi. 60 psi. 80 psi.

The central maintenance computer can be controlled: from a standard laptop connected to the LAN. from cockpit. both.

Which is typical information of aircraft electronic library system. traffic information. flight information. data flight parameter.

What is the damage tolerance?. it is the ability to withstand damages. it is the ability to repair damages in an automatic mode. it is a maintenance monitoring system used for non-accessible areas.

What does the Central Maintenance System (CMS) provide?. maintenance and navigation data. only maintenance data. maintenance data only for ground maintenance technicians.

The continues BITE of aircraft CMS. it is performed within BIOS loading. it is performed all the time. it is initiated by the pilot.

What is the function of CMS data loading?. navigational database loading. both. CMC data extraction.

What is the task performed by the Common Remote Data Concentrator (CRDC)?. It behaves as bus arbitrator. It sends data to avionic unit installed on the aircraft. It concentrates data from analog and discrete signals remotely.

The IMA : it is accessible only by its designers. permits early debug the software. it is an exclusive manufacturers management.

What is the meaning of the acronym PCU?. Power Control Unit. Personal Control Unit. Pressurization Control Unit.

What is the meaning of the acronym CIDS?. Cabin Intercontinental Data System. Cabin Intercommunication Data System. Cabin Intercommunication Data Surveillance.

What is the Honeywell Ovation Select 200C?. It is a '90s PCU system. It is a remote control for the cabin temperature used only by the crew. It is a new-generation, touch-screen, LCD type PCU.

Which is one of the characteristics of the CNS net system?. A single net wire allows to transmit more information to different LRUs/on board systems. The data transmission speed is too low. A single net wire allows to transmit less information to different LRUs/on board systems.

What kind of warning the Enhanced Ground Proximity Warning gives in case of terrain impact risk?. audible alert. visual alert. physical alert.

What does the GMCS mean?. Ground Miscellaneous Camera System. Ground Maintenance Camera System. Ground Maneuver Camera System.

The solid state drive of aircraft information storing. produces more heat than HDD. cannot be wrote and read unlimited times. has not life cycle like HDD.

What is the EGPWS of aircraft cabin information system: global satellite position during the navigation. enhanced ground proximity warning system. is not used anymore.

What is the shimmy?. a flutter phenomenon on the rudder. a flutter phenomenon on the wings. a flutter phenomenon on the landing gear.

Which of the following is oleos shock absorber: gas/oil with separator. liquid spring. both.

generally, the number landing gear wheels increases: when the leg load increase. when the leg load decrease. depend on airport surface.

Which is the function of the anti-skid system?. to control the temperature level on brakes. to control the pressure level on brakes. to control the crushing of the shock absorber.

Which is the purpose of the landing gear shock absorber?. to optimize the tires wear. to absorb energy. to give steering capabilities.

Which is the brakes function?. to absorb dynamic energy. to absorb potential energy. to absorb kinetic energy.

Where is the secondary landing gear located?. in the rear of the aircraft. as far as possible from the center of gravity. in the front of the aircraf.

Why the number of wheels in a landing gear can change?. in order to give more stability to the aircraft. in order to bear a higher aircraft weight. in order to absorb more kinetic energy.

How is regulated the amount of rain repellant fluid applied on the windshield?. depending on the type of aircraft. it is constant. depending on how long the pilot presses the switch.

The frequency change vibrating rod of ice detectors means. no ice formation. possible ice formation. there is a rod failure.

The ice detector devices can be based on: pressure operator. vibrating probe. both.

The main part on which easily forms the ice is: Horizontal stabilizer. both. the control surface.

What's the tension?. it a stress that causes the curvature of the element. it is the stress that tends to shorten the structure. it is the stress that acts axially on the structure.

What's the symmetry check?. a test that controls if the aircraft is correctly loaded. a test that controls the symmetry of the aircraft structures. a test that controls if the fuel level in the right wing tank is equal to the fuel level on the left wing tank.

The safe life concept means: life cycle design without repaired. a fail safe concept. is a life cycle maintenance and inspection program.

Which is the main purpose of the anticorrosive protection?. to easily find cracks and dents after the assembly of the aircraf. to work as an penetrant fluid for radiographic checks. to protect surfaces by the corrosion.

What is the stress?. it is a force that acts on a material. it is torque moment. it is a deformation of a material.

Which is the main purpose of the primary structure of the aircraft?. It must support limited strengths. It must provide a support to aircraft systems. It must support the main loads and strengths.

What's a load cycle?. a load application, precede by a total relaxation of the structure. a load application, with no relaxation of the structure. a load application, followed by a total or partial relaxation of the structure.

The truss type structure. both. s made of steel tubing. is made of shape skin.

An advanced CG of an Aircraft CG (towards the nose). generate more stress on the tail fuselage. generate less stress on the tail fuselage. there is no change of the stressing the tail fuselage.

Where are escape slides stored?. under the floor where doors are located. in the lower part of doors. in a container next to the doors.

Which is the main purpose of force frames?. To give the shape to the structure. To give enough space for tanks. To bear the weight of concentrated loads.

When a containerized cargo system is not available : baggage's must not be restrained from moving during flight. baggage's must be restrained from moving about the aircraft during flight. baggage's must not be restrained from moving during flight.

What happens to the outflow valve in the case of failure of the pressurization system?. it opens. it closes. it maintains the position adopted during the failure.

Which is the main problem related to the installation of the pressurization system?. the possibility to reach every part of the aircraft. the structural strength of the aircraft. the aircraft velocity.

Which is the installation that provides the compressed air?. the engine bleeding, the APU (Auxiliary Power unit) and the ground aircraft equipment. the engine bleeding, the RAT (Ram Air Turbine) and the APU (Auxiliary Power unit). the engine bleeding, the RAT (Ram Air Turbine) and the ground aircraft equipment.

To monitoring the cabin pressure rate. the pilot altimeter is used. a cabin variometer is installed. a cabin altimeter is installed.

The automatic air cabin humidifiers are switched on. at sea level. at 10000 ft. never.

An increased pressure regulation of air passengers cabin. induces a safety flight condition. induces a risk due the structural fuselage limit. induces a negative pressure.

the compass indicator pointer is oriented as. the earth spinning axes. the earth magnetic field. the geographic magnetic field.

What does the NDB (Non Directional Beacon) transmit?. works only at one height. a signal in all directions. a signal in one direction.

The lower limit of the green arc of airspeed indicator represents. allowed speed with extracted flaps. the stall speed with retracted flaps. both.

The stall probes of the aircraft can be. only analogue signals. only digital signals. analogue signals.

A compass used on the equator. both wrong. is affected by deviation error. is affected by inclination error.

The acceleration error of the compass is due. horizontal acceleration of an aircraft. angular acceleration. vertical acceleration.

What is the fixed signal of the VOR (VHF Omni Directional Range)?. the variable signal. the passive signal. the reference signal.

Flying over the transition level. the QFE altimeter setting is mandatory. the QNH altimeter setting is mandatory. the QNE altimeter setting is mandatory.

The APU provides. it provides the trust. only pneumatic energy. electrical energy.

A static inverter is used in electrical power plant in order to. current flow inverter. converts AC to DC. converts DC to AC.

The electrons of a battery moves : from the positive to the negative pole. from the cathode to the anode. from the anode to the cathode.

What's the purpose of Zener diodes?. voltage regulation. rectification. voltage stabilization.

What about the electrode composition in a Nickel-Cadmium battery?. one electrode made of nickel dioxide and one made of sponge lead. one electrode made of cadmium oxide and one made of nickel dioxide. one electrode made of cadmium oxide and one made of nickel oxide.

On what kind of solution is based the electrolyte of a Nickel-Cadmium battery?. a water solution of potassium hydroxide. a water solution of sulphuric acid. a water solution of paraffin.

The produced energy of a battery is expressed as. Ampere -hour. Watt-hour. Watt/hour.

What about the electrode composition in a Silver-Zinc battery?. one electrode made of silver dust and one made of sponge zinc. two electrodes made of silver dust. one electrode made of silver dust and one made of zinc.

How many pins does the aircraft socket for the direct current have?. 3 pins. 9 pins. 6 pins.

The output of a transformer : both. has the same frequency of the input. has a rectified current.

The emergency locator transmitter is classified as: active safety device. passive safety device. not a safety device.

Which is the purpose of active safety devices?. to reduce the stress of passengers. to reduce the accident risk. to reduce consequences on passengers and crew.

How is activated the ELT?. by the life raft inflation. by the opening of the emergency doors. by a strong impact or manually by the pilot.

The life jackets are classified as : not safety devices. active safety devices. passive safety devices.

Which gas is used to inflate life jackets?. Nitrogen. CO2. air.

Which is the system available for the passenger that shows the position and direction of the aircraft?. the passenger service monitor. the moving-map system. the video entertainment system.

Which is the emergency frequency of the ELT (Emergency Locator Transmitter)?. 121.5 MHz. 123.5 Hz. 125.5 KHz.

Which are the ELT frequencies?. 121.500 MHz, 243.000 MHz, 406.025 MHz. 118.000 MHz, 911.500 MHz, 505.050 MHz. 747.400 MHZ, 109.119 MHz, 72.000 MHz.

Why the fire detectors are installed on an aircraft?. o deploy the correct extinguishing agents. To measure smoke concentration. To provide an alarm when a temperature higher than a fixed value is detected.

When does the fire detector provide an alarm?. when it measures a high temperature or an important smoke concentration. when fire is just started. only if a higher temperature than a fixed value is detected.

A material classified as flame resistant: can propagate the flame when the source is moved. must not propagate the flame when the source is moved. are not used in aeronautical field.

Which kind of sensor is there in the cabin?. pressure detector. smoke detector. thermal detector.

On which principle are based the fire detectors installed on an aircraft?. Smoke concentration in the air. Infrared analysis. Temperature and smoke measures.

What happens when a temperature higher than a fixed value is detected?. The detectors active a signal only after the pilot has verified the fire condition on the dedicated control panel. The detectors crash and interrupts a circuit. The detectors activate an alarm.

the fire resistance of a fire proof materials: must be smaller than stainless steel. must not be smaller than aluminium alloys. must not be smaller than stainless steel.

When must be done the ENGINE fire test?. must be done before the APU fire test. must be done after the APU fire test. must be done when the APU fire test isn't performed.

The yaw damper of airliners: is activated by the pilot. is activated only on the ground manoeuvres. increases the passengers comfort.

How is named the movement of the aircraft around the vertical axis?. yaw. pitch. roll.

The Q pot device has the scope. to increase the lateral stability. to give the pilot a proportional feel. to increase the pilot force.

The ground effect spoilers are : extended automatically on landing. differential. never used.

Why is used the rudder limiter system?. to control the position of the centre of pressure during supersonic flight phase. to reduce the rolling and yawing oscillations. to limit the displacement of the rudder at high speeds.

The gust alleviation spoilers are. extended symmetrically. never used. extended automatically.

What are the slats?. surfaces that are placed on the rear of the wing to increate the air pressure. surfaces that reduce the camber because they create a turbulent motion of the air on the wing. surfaces that increase the camber because they favor a laminar motion of the air on the wing.

The accelerometers stall warning. is based on a slot cut in the wing leading edge. is based on variation of angle of attack. is based on accelerometer installation on the a/m nose.

Which of these is an example of rigid tank?. wing tank on supersonic aircraft. wing tank on airliners. external wing tank on military aircraft.

How is refueled an aircraft on ground?. by airport systems. by another parked aircraft. by aircraft tanks.

The pump of aircraft fuel system can be: booster pumps. both. transfer pumps.

The best performance of aircraft fuel tank sensors are: capacitive sensors. mechanical sensors. the weight sensors.

Which of these tasks is proper of the fuel tanks ventilation system?. avoid over fuel air caused by the fuel consumption. avoid over-pressure caused by the fuel consumption. avoid depressions caused by the fuel consumption.

The sensors of aircraft fuel tanks can be: capacitive sensors. ultrasonic sensors. both.

Which is the function of servo-valves?. to change pressure and flow continuously. to change the density and flow continuously. to change the temperature and flow continuously.

How can be the oil flow rate in the hydraulic system changing the pressure?. alternate. variable. constant.

In case of constant flow rate of hydraulic circuit fluid from the pump. the pressure is variable. the pressure is constant. the swash plate of the pump regulate the flow rate.

The fluid used in aeronautical hydraulic systems is. mineral oil. both. synthesis oil.

Which of the following is not a characteristic of hydraulic fluids?. good wear resistance. good lubricant power. high risk of fire.

To prevent hydraulic fluid to flow back in circuit portion. a check valve must be installed. a shut off valve must be installed. a pressure relief valve must be installed.

Which of the following devices are common boundary layer controls?. stalling strips. slats. servo tab.

The split flap: have the best efficiency. help the stability. both wrong.

During a subsonic flight. the rudder limiter should be activated. the structure can never be damaged. the flap must be activated.

The aerodynamic balance panel are used: to amplify the pilot force. during the landing. both.

The aerodynamic balance panel are used: during the landing. to amplify the pilot force. both.

Airworthiness is a condition in which an aircraft: Is modified according to approved specifications by the authority. both. Is congruent with the approved type.

Airworthiness is a condition in which an aircraft: both. Some AD's can be postponed to next Check. Is in order with the mandatory maintenance.

AD is : optional. Mandatory to apply within specified limits. Mandatory to apply in the nearest check time.

Emergency AD is: Mandatory to apply in the nearest check time. Mandatory to apply within specified limits. depend how it has been classified ( Mandatory, recommended or optional).

Service Bulletin is. Mandatory to apply in the nearest check time. Mandatory to apply within specified limits. depend how it has been classified ( Mandatory, recommended or optional).

A semi-monocoque structure. includes skin structure and longerons. is a life cycle maintenance and inspection program. includes skin shape and longerons.

for the outer skin of both monocoque and semi-monocoque structures : always Multilayers sheets are used. Thin sheet metal is used. Thick sheet metal is used.