11. Aeroplane aerodynamics, structures and systems - Q&A
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Emergency floor lighting system is inoperative, then
- the aircraft is allowed to fly empty to a main base.
- the aircraft is not allowed to fly until repaired.
- the aircraft is allowed to fly in daylight conditions only.
any evidence?
How are passenger reading lights normally tested?
- By using a READ LIGHT TEST switch on the cabin attendant panel.
- Each one is switched on individually at passenger panel.
- By using a READ LIGHT TEST switch at any passenger panel.
Y? Based on aircraft I work . Its answer should be B
When air is pressurized, the oxygen content
- increases.
- remains constant.
- decreases.
why?
If an accumulator loses air pressure there will be
- rapid fluctuations of instruments.
- rapid depressurisation of system.
- pump cavitation.
Accumulators in instruments?? pfcu's maybe?
Buckling in a semi-monocoque structure is prevented by
- bulkheads.
- stringers.
- longerons.
Are all 3 not correct?
Before checking the SG of a battery recently removed from an aircraft
- take the temperature of the electrolyte.
- carry out a capacity test.
- allow to stabilise for one hour.
I have had this question elsewhere and the answer was to let it stand for an hour!?
What colour is the strobe light on the PORT wing?
- White.
- Green.
- Red.
why not red?
As fuel level increases, system capacitance
- no change.
- decreases.
- increases.
i dun gt this point...cn u explain briefly?
A cockpit check on the engine firewire system is a
- continuity check.
- calibration check.
- function check.
is this answer is correct bcoz i have study somewhere that firewire check is a check for continuity of the loop..........please can anyone help me regarding it........
thanks guys.....
Inwards relief valves usually open at a negative differential pressure not exceeding
- 0.16 p.s.i.
- 1.2 p.s.i.
- 0.5 p.s.i.
I thought it should be 0.5 psi
111.2 MHz is
- VHF.
- VOR.
- ILS.
VOR frequency 112-118 MHz
ILS frequency 108-112 MHz(all odd frequencies).
so,the only correct answer must be VHF(108-136 MHz).
Upper surface wing skin is usually made from
- 2024.
- 7075.
- 5056.
Jeppesen A&P Technician Airframe Textbook 2-8.
commonly used in the construction of skins and rivets are 2017 and 2024.
The equalizing coils on voltage regulators will
- have current passing through them from the higher loaded generator to the lower.
- have current passing through them only when the generators are not paralleled.
- be connected to each other when the generators are paralleled.
Aircraft Electricity and Electronics Thomas Eismin 5th Edition page 200.
In typical vapour cycle system, the sub-cooler
- cools the vapour further to prevent slugging.
- is a heat exchanger to superheat the vapour.
- delivers extra cooling effect when the aircraft is on ground.
option 1 is the most correct answer?!
http://navyaviation.tpub.com/14020/css/14020_106.htm
In a Turn and Slip indicator, the effect of increasing the rotor speed would be
- it would have no effect.
- it would under read.
- it would over read.
MAY BE IT IS WRONG SINCE MORE SPEED MEANS MORE FORCE IS REQUIRED TO MOVE SO UNDERREAD
Laser gyros have
- no rotating parts.
- moving parts.
- a spinning rotor.
may be it is wrong ,since nothing moves except beam of light which is weightless
On large aircraft, braked wheel assemblies are normally inflated with
- nitrogen.
- nitrogen and not more than 5% of air.
- an argon and CO2 mixture.
refer to JAR 25.733 Tyres (e)
tyres mounted on brakedwheels must be inflated with dry nitrogen or other gases shown to be inert so that the gas mixture inthe tyre does not contain oxygen in excess of 5% by volume..
nitrogen and not more than 5% of air, will be more correct?
The life of an aircraft oxygen cylinder is
- 4 years.
- 10 years.
- 2 years.
As i know the oxygen cylinder are removed for overhaul and tested is every 4 year
so life of an aircraft oxygen cylinder is 4 years also?! or 5 years will be the most correct answer?
What is the principle of an O2 generator?
- Sodium chlorate and iron mixed by an electronic detonator.
- Sodium chlorate and iron using a mechanical detonator producing O2 when mixed with air.
- Sodium chloride and iron mixed by an electronic detonator.
iron mixed by an electronic detonator or iron using a mechanical detonator?!
refer to CAIPs AL/3-25 3.5.1
Floor proximity lighting is a mandatory requirement and each light should be spaced
- at 70 inch intervals.
- at 60 inch intervals.
- at 40 inch intervals.
the answer suppose be 'at 40 inch intervals'
refer to CAAIPs Leaflet 5-11 2.7.1
During flap down selection in a continuous straight and level flight at constant IAS and weight
- the lift coefficient and the drag coefficient increase.
- the stall speed increases.
- the centre of pressure moves aft, lift coefficient and the drag coefficient increase.
Center of pressure moves AFT but LIFT COEFFICENT AND DRAG INCREASE TOO
What external warning is there for an APU fire?
- Aural.
- Red light.
- Both aural and a red light.
Never seen RED light outside Aircraft. AURAL sign OK
If a redundant structure fails it becomes
- fatigued
- safe-life
- failsafe
The answer is FAILSAFE due to if a structure fail other structure (redundant) carry the load.
Safe life depend on LIFE of component. After FH or FC must be replaced... means that the component must be replaced BEFORE FAIL
To ensure that a wing stalls at the root first, stall wedges are
- installed on the wing leading edge at the wing tip.
- installed on the wing leading edge at the wing root.
- installed at the wing trailing edge at the wing root.
Stall Wedges are installed at the wing ROOT LEADING EDGE PLS CORRECT
REF: http://www.scribd.com/doc/63481016/MODULE-11-COMPLETE