Test 1 Flashcards
Electrically powered ice protection devices on aircraft are used as?
De-Icing devices for pitot tubes, static ports, and windshield
Pneumatic mechanical devices that provide ice protection are…
usually used as de-icing devices
On most transport aircraft, cockpit windows are protected against icing by?
Electrical heating
Aircraft fuel tanks should be checked for water?
Before each flight
The fuel cross-feed system enables:
the supply of any engine from any fuel tank
The purpose of stringers, used in the fuselage construction is to?
Assist the skin to absorb longitudinal compressive loads
The component that transforms the hydraulic pressure into a linear motion is called?
an Actuator or Jack
One purpose of an accumulator is a hydraulic system is to?
store fluid under pressure
Landing gear torque links are used to?
Prevent rotation of the landing gear piston in the oleo strut.
The function of a scissor (torsion link) in a landing gear is to?
Prevent any rotation of the oleo strut
The two deformation modes that cause wing flutter are?
Torsion and bending
On an airplane using AC as primary power supplies, the batteries are charged in flight from?
a Transformer Rectifier Unit
The power required for field excitation of the main rotor in modern constant frequency is controlled by?
an AC generator by regulators
The capacity of a battery is given in?
Ampere hours
The reason for using inverters in an electrical system is?
to Change DC to AC
When two DC generators are operating in parallel, control of the load sharing is achieved by?
an Equalising circuit which, in conjunction with the voltage regulators, varies the field excitation current of the generators
The power output of a generator is controlled by?
Varying the field strength.
The purpose of bonding the metallic parts of an aircraft?
2,4
The main reason for opening the cowl flaps is to control the?
C.H.T
For a piston engine, the chemically correct formula is?
1.10
When leaning the mixture for the most economic cruise fuel flow, excessive leaning will cause?
High Cylinder Head Temperatures
The operating principle of float-type carburettors is based on the?
The difference in air pressure at the venturi throat and the air inlet
For internal cooling, reciprocating engines are especially dependent on?
The circulation of lubricating oil
The working cycle of a four-stroke engine is?
Induction, compression, power, exhaust
Dual ignition provides a factor of reliability and it?
provides more voltage
The lubricating system of an air-cooled piston-engine…
Reduce internal friction on the engine
Which of the following remains unchanged during engine intake?
Static temperature
In a gas turbine combustion chamber?
The axial velocity of the gas stream is the highest
A twin-spool engine with a bypass mass and single compressor of 250kg/s has a bypass ratio of?
0.5
In a jet engine the propelling nozzle?
Decreases the velocity and increases the engine’s thrust
To achieve reverse thrust on a turbine with a high by-pass ratio it is necessary to?
Deflect the fan thrust
In a turbo-jet, the purpose of the turbine is to?
Drive the compressor by using part of the energy from the exhaust gases
Which statement is correct for the gas turbine engine with a constant speed propeller and a free power turbine, when the power setting is increased?
1 is correct, 2 is correct
The primary performance indicators (cockpit instruments) for thrust on a turbofan engine is?
EPR or N1
Low battery voltage will most likely result in?
Hot Start
Which statement is correct regarding JET A1?
1 is Correct, 2 is Correct
In a gas turbine engine lubrication system the?
Oil is colled through thermal efficiency
Concerning the starting procedure of an aircraft, the selected igniters are in the?
Combustion Chambers
Labyrinth seals in the lubrication system of an engine are?
Not completely tight, allowing for air
One of the advantages of a multiple-spool jet engine design is that?
If one spool seizes, the remaining spool(s) will continue to operate
In the airflow through a single spool axial flow, turbojet engine the axial velocity of air is greatest?
as it leaves the compressor
The installation and use of onboard oxygen generators are such that?
The smoking ban is imperative when used, No trace of grease must be found in the system assembly
CO2 type extinguishers are suitable to fight fire one?
Carbonate materials, flammable liquids, electrical equipment
Halon is used as a fire extinguisher equipment when it?
acts as a very effective perspirant
For an aeroplane with a tyre pressure of 16 bars, there is a risk of dynamic hydro planning as soon as?
Crosswind is greater than 25 kt
Regarding wake turbulence, what is the distance between an aircraft behind a MEDIUM or HEAVY aircraft?
5 Minutes
Induced drag is?
Inversely proportional to the square
Which phenomenon is counteracted with differential aileron deflection?
Adverse yaw
What factors determine the distance travelled over the ground of an aeroplane in a glide?
The wind, lift/drag ratio, which changes with AOA
What will happen in ground effect?
The induced AOA and induced drag decreases
Maintaining CAS and flight level constant?
Lower TAS because of the IAS
Lift is the?
The vertical component of the total aerodynamic forces, perpendicular to the undisturbed airflow.
The high lift device fitted on most transport aircraft are?
Fowler flaps
Constant-speed propellers provide better performance than fixed-pitch propellers because they?
Produce an almost maximum efficiency over a wider speed range
Which of the following statements about the spin is correct?
During spin recovery, the ailerons should be kept in the neutral position
The accumulation of frost, snow, and rain may have consequences, an increase in bank will affect?
Roll Rate
