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ATPL 22 AIRCRAFT GENERAL KNOWLEDGE – INSTRUMENTATION |
| 22.05 COMMUNICATION SYSTEMS |
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1
The purpose of auto trim function in autopilot is to :
Control elevator trim tab in order to relieve elevator load |
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2
Regarding electronic instrument system (efis) : 1- the navigation display (nd) displays flight director bars. 2- the altimeter setting is displayed on the pfd (primary flight display). 3- the pfd is the main flying instrument. 4- the fma (flight mode annunciator) is part of the nd. the combination regrouping all the correct statements is :
2, 3. |
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3
The primary flight display (pfd) displays information dedicated to:
Piloting. |
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4
The principle of capacity gauges is based on the: out on the sensor.
Capacitance variation of a given capacitor with the type of dielectric. |
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5
In the automatic trim control system of an autopilot, automatic trimming is normally effected about the :
Pitch axis only. |
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6
Mach trim is a device to compensate for :
Backing of the aerodynamic center at high mach numbers by moving the elevator to nose-up |
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7
Which one of the following statements is true with regard to the operation of a mach trim system : high subsonic airspeeds. subject/sec aragraph wording domanda rispostaa rispostab rispostac rispostad ck1 ck2 ck3 ck4 1 france the "heading hold" cannot be centered is centered if the is centered if the is centered if the 0 -1 0 0 aircraft is on optimum path to join heading 180§180§. your aircraft holds a heading of 160§. the vertical bar of the fd: 4 france the operation of the pulse modulation of the a combination of frequency modulation amplitude modulation of 0 0 -1 0 frequency modulation and pulse modulation. based on:
It only operates above a pre-determined mach number. aircraft has a starboard drift of 20§of the carrier wave. |
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8
The advantages of an electric float gauge are: 1- ease of manufacture 2- independence of the indication relative to the variations of the aircraft power system if the measurement is made by a ratiometer 3- independence of the indication relative to the variations of the aircraft power system if the measurement is made by a galvanometer 4- independence of the indication relative to temperature variations the combination regrouping all the correct statements is:
1, 2, 4 |
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9
The gauge indicating the quantity of fuel measured by a capacity gauging system can be graduated directly in weight units because the dielectric constant of fuel is:
Twice that of air and varies directly with density. |
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10
If the tanks of your airplane only contain water, the capacitor gauges indicate:
A mass of water different from zero, but inaccurate. |
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11
The purpose of an airplane automatic trim system is to trim out the hinge moment of the :
Elevator(s) |
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12
The capacity fuel gauges provide information:
On mass whose indication is independent of the temperature of the fuel. |
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13
The float type fuel gauges provide information on:
Volume whose indication varies with the temperature of the fuel. |
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14
The principle of capacitor gauges is based on:
The variation in capacity of a condensor with the nature of the dielectric |
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15
The basic principle used for measuring a quantity of fuel in a transport airplane equipped with "capacitor" gauges is that the:
Capacity of a capacitor depends on the nature of the dielectric in which it is immersed. |
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16
The automatic trim is a component of the autopilot pitch channel. its function is to:
Transfer a stabilized aeroplane to the pilot during autopilot disengagement. |
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17
The quantity of fuel in the tanks is measured by capacitor type contents gauges. the working principle of these sensors is to measure the :
Charge of condensors |
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18
A public transport aircraft has a cruising altitude of fl 390. it is fitted with individual oxygen masks for the passengers. in the event of depressurisation, the masks must be automatically released before the cabin pressure altitude exceeds: 10§c.
15000 ft. heard on the radio. with a high rotation speed. within the whole set of cylinders. |