11. Aeroplane aerodynamics, structures and systems - Q&A

The life of an aircraft oxygen cylinder is

• 4 years.
• 10 years.
• 2 years.

What colour is the strobe light on the PORT wing?

• White.
• Green.
• Red.

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.

A restrictor in the landing gear hydraulic retraction and lowering system is positioned in the

• landing gear down line.
• return line from the landing gear selector.
• landing gear up line.

On large aircraft, braked wheel assemblies are normally inflated with

• nitrogen with not more than 5% oxygen.
• an argon and CO2 mixture.
• dry compressed air from a shop air supply.

What is the EASA regulation of the minimum separation between a seat and another seat or structure?

• 10 inches
• There is no EASA guideline.
• 7 inches

111.1 MHz is

• a VOR frequency.
• a HF frequency.
• an ILS frequency.

If angle of attack is increased beyond th e critical angle of attack, the lift coefficient ... and the stagnation point moves...

• decreases; rearward
• increases; rearward
• decreases; forward

What is the main purpose of a frise aileron?

• Increase drag on the up going wing.
• Decrease drag on the up going wing.
• Help pilot overcome aerodynamic loads.

Compared with the flap down configuration the maximum angle of attack for the flaps up configuration is

• smaller.
• larger.
• unchanged.

One lamp is connected across corresponding phases of two alternators. They will be synchronised when

• the lamp is extinguished.
• the lamp is either at maximum brightness or is extinguished.
• the lamp is maximum brightness.

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.

Compared with the flap up configuration the maximum angle of attack for the flaps down configuration is

• unchanged.
• larger.
• smaller.

A radial is referenced

• from a beacon.
• to a VOR.
• on a compass.

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.

Excessive wear on both sides of the control cable pulley groove is evidence of

• pulley misalignment.
• excessive cable tension.
• cable misalignment.

Which instrument are most likely to damage if you have a rapid drop in pressure, when carrying out a pitot-static leak check?

• Air speed indicator.
• Altimeter.
• Vertical speed indicator.

If the straight and level stall speed is 100 kt, what will be the stall speed in a 1.5g turn?

• 81 kts
• 122 kts
• 150 kts

If the battery fails on the ground (INS System)

• an amber light appears on the MSU and a horn sounds.
• a red warning light appears on the MSU and a horn sounds.
• a red light appears on the CDU and a horn sounds.

When resetting the CSD on the ground, the engine should be

• rotating at idle.
• stationary.
• rotating at Nsync.

If True Airspeed is 470 knots, what is the Equivalent Air speed?

• 662 knots
• 550 knots
• 278 knots

With reference to differential aileron control

• drag decreases on the outer wing.
• drag increases on the outer wing.
• drag increases on the inner wing.

When pressurising the aircraft on the ground for test purposes, internal doors, cupboards etc. must be

• all open.
• removed.
• all closed.

When air is pressurized, the oxygen content

• increases.
• remains constant.
• decreases.

A radial is referenced

• from a beacon.
• to a VOR.
• on a compass.