Avery Systems Exam V

50問 • 1年前

問題一覧

What is the primary advantage of AC over DC electrical generation types?

Saving in space and weight

An aircraft is fitted with NiCad batteries, the crew get a high battery temp warning light. This situation is probably caused by?

The rate of charging was too high

After a 'wet start' in a turbine engine, what precautions should be taken to prevent a future engine malfunction ?

Motor over to prevent torching when re starting

With increasing airspeed up to and beyond Mach 1.0, the co-efficient of drag and a constant angle of attack will?

Initially increase, then decrease

The purpose of a cabin pressure relief valve is to automatically open when ?

Cabin differential pressure reaches a pre set value

The valve that controls the air pressure in a cabin pressurisation system is known as?

The outflow valve

Which of the following correctly names the component in a pneumatic system that will automatically shut off the air supply to non-essential services, when system pressure reduces below a certain predetermined value?

Pressure maintaining valve

In what way is the SG of Avtur effected by changes in ambient temperature ?

SG decreases with temperature rise

Under which of the following conditions is it necessary to incorporate cabin air humidifiers in an aircraft air conditioning system?

At high altitudes at all times

Hydraulic fluid has which of the following properties ?

Is is almost incompressible

When comparing the properties of pneumatic vs hydraulic systems?

Pneumatics do not require return lines but hydraulic systems do

In what way does the extension of leading edge devices such as flaps and slats effect the co efficient of lift and drag, and the nose pitching moment ?

Increase in lift and drag coefficients, and a nose up pitch moment

Assuming the same degree of trailing edge flap deflection, which answer best describes the primary advantage of slotted flaps, compared to fowler flaps

Improved boundary layer airflow over flaps

Assuming the aircraft is within the various radio altitude envelope bands, in which of the following scenarios will the flight crew receive a warning

When an unsafe radio height is reached, with the aircraft NOT in the landing configuration

Assuming a constant speed drive is disconnected in flight when, and under what circumstance can it be reconnected ?

Mechanically, when the aircraft is on the ground

Which of the following best describes how an APU speed is controlled ?

By a governor

The device that controls the direction of movement of a hydraulic actuating unit, is called the ?

Selector valve

Which of the following switches must be closed before a generator can be connected to the synchronising bus?

The bus tie breaker switch

Which answer best describes the disadvantage of a turboprop engine, compared to a turbojet engine ?

Lower propulsive efficiencies at high subsonic mach numbers

The auto land status annunciator

Monitors only autopilot and autopilot support system integrity

A swept wing transport turbojet is cruising at higher than normal operating altitude, at normal cruise mach number, in non turbulent conditions. If it experiences buffet, which statement is correct ?

It could be high or low speed buffet, as it is difficult to tell at high altitude

Shockwaves can form at a true mach number below Mach 1.0 , this is because?

Curved surfaces in various parts of the aircraft accelerate the air to greater than free stream mach number

A control tab that is moved by the main control linkage, such that the hinge moments cause a deflection of the primary control surface. This device is called a ?

Servo tab

High flying air transport aircraft have a fuel tank venting system, this is to?

Ensure the tank walls do NOT rupture when in turbulence or during manoeuvres

What is the reason why the hydraulic reservoir is pressurised in high flying aircraft ?

To prevent the fluid from foaming due to low ambient pressures at high altitudes

An aircraft is fitted with TCAS and GPWS. Which statement is most correct ?

Both TA's and RA's are inhibited by GPWS warnings

The B767 incorporates a typical autopilot flight director systems (AFDS). When an ILS is being flown, with the Altitude Hold and Approach modes selected, which statement best represents the actions that follow ?

The system is armed to capture the glideslope and altitude hold will automatically cancel when this occurs

The manoeuvre envelop defines?

The speed/load factor limits within which the aircraft is to be operated

Manual reversion is provided?

On aircraft that do not have triple hydraulic system redundancy

An aircraft accelerated beyond Mcrit, if not corrected by the Mach Trimmer, it can display a nose down tendency. This is due to ?

The rearward movement of the centre of pressure and reduced tailplane down load

On large transport aircraft, the effect of a failure of leading edge high lift devices to extend is to ?

Require a lower than normal attitude, and a higher airspeed on approach

With an increase in altitude, and same equivalent airspeed (EAS) spiral stability ?

Increases

Which statement is most correct?

The primary function of ground spoilers is to reduce lift and increase braking effectiveness

AS the sped of a large transport aircraft increases from low speed stall to Mmo, the power requirements during this phase can be best described as ?

Decrease than increase

The primary reason for fitting leading and trailing edge flaps is to ?

Reduce the landing and takeoff speeds and distances needed

A number of swept wing jet transport aircraft have a limitation such that flap extension at high altitudes (typically above FL200) is prohibited. This is because ?

Stall warning and flap fatigue life may be compromised

With increasing altitude up to max cruise level ?

Low, and high speed stall buffet speed IAS values become closer together

An excessively aft CoG when on approach to land will cause?

Light elevator control forces and decreased pitch stability

The CoG is near its forward envelope limit, Which statement is most correct ?

Greater elevator force is required to change the pitch attitude than with an aft CoG

as altitude is gained , how is the low speed stall value effected ?

Both IAS and EAS values increase, EAS will always be equal to or less than IAS value

A Trip Free circuit breaker can be reset ?

When the bi metalic strips have cooled

The ZFW limit imposed on some aircraft is to ensure the spar is not overstressed and is ?

Relevant at takeoff weight only

During a climb at a constant mach number, the angle of attack will ?

Increase

In stable asymmetric flight ?

Bank and rudder are used in coordination to counteract the yaw produced by the live engine

Greater rearward wing sweep?

Reduces trailing edge flap effectiveness

Which of the answers is incorrect about factors assisting lateral static stability

Inboard flaps

An aircraft fitted with two EADI and 2 EHSI . what is the minimum number of symbol generators required for all screens to be operational ?

Which answer listed is correct regarding aircraft system warnings whilst the aircraft is taking off ?

Cautions are automatically inhibited from 80kts to 400ft RA or 20 seconds after lift off, whichever occurs first

Which does not effect hydroplanning speed ?

Tyre Size

Which RPM range will produce the greatest variation in thrust for a given movement of the power lever ?

The upper end of the rpm range

ATPL Systems

Will Erwin · 50問 · 1年前

ATPL Systems