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INST-BNC TOTAL THEORY-MODULE3
1.
TCAS 2 (Traffic Collision Avoidance System) uses for its operation:
a) the echoes from the ground air traffic control radar system.
b) the echoes of collision avoidance radar system especially installed on board.
c) both the replies from the transponders of other aircraft and the ground-based radar echoes.
d) the replies from the transponders of other aircrafts.
2.
In An Air Data Computer (ADC), aeroplane altitude is calculated from:
a) Measurement of absolute barometric pressure from a static source on the fuselage
b) The difference between absolute and dynamic pressure at the fuselage
c) Measurement of outside air temperature (OAT)
d) Measurement of elapsed time for a radio signal transmitted to the ground surface and back
3.
The indication of a fuel float gauge varies with: 1- aircraft attitude 2- accelerations 3- atmospheric pressure 4- temperature The combination regrouping all the correct statements is:
a) 1,2,3,4
b) 4
c) 1,2
d) 1,2,4
4.
The Mach number is:
a) the ratio of the aircraft conventional airspeed to the sonic velocity at the altitude considered
b) a direct function of temperature ; it varies in proportion to the square root of the absolute temperature
c) the ratio of the indicated airspeed to the sonic velocity at the altitude considered
d) the ratio of the aircraft true airspeed to the sonic velocity at the altitude considered
5.
The operation of the GPWS (Ground Proximity Warning System) is governed by laws taking the aircraft height into account as well as: 1- the descent rate 2- the climb rate 3- the aircraft configuration 4- the selected engine rpm The combination regrouping all the correct statements is:
a) 2,3
b) 1,3
c) 2,4
d) 1,2,4
6.
The altitude alerting system:
a) alerts the flight crew in case of an autopilot disengagement.
b) alerts the flight crew upon approaching a pre-selected altitude.
c) generates a signal once the aircraft is steady at the pre-selected altitude.
d) alerts the flight crew in case of ground proximity.
7.
A flux valve detects the horizontal component of the earth's magnetic field 1- the flux valve is made of a pair of soft iron bars 2- the information can be used by a "flux gate" compass or a directional gyro 3- the flux gate valve signal comes from the magnetic compass 4- the accuracy on the value of the magnetic field indication is less than 0,5° The combination regrouping all the correct statements is:
a) 1, 4.
b) 1, 2.
c) 1, 2, 4.
d) 2, 4.
8.
When, in flight, the needle and ball of a needle-and-ball indicator are on the right, the aircraft is:
a) turning left with not enough bank
b) turning right with too much bank
c) turning right with not enough bank
d) turning left with too much bank
9.
The signal supplied by a transmitter fitted with a 3-phase AC generator, connected to RPM indicator, is:
a) a three-phase voltage, the frequency of which varies with the RPM; the indicator is provided with a motor which drives a magnetic tachometer
b) a DC voltage varying with the RPM; the indicator is a plain voltmeter with a rev/min. scale
c) an AC voltage varying with the RPM; the indicator rectifies the signal via a diode bridge and is provided with a voltmeter
d) an AC voltage, the frequency of which varies with the RPM; the indicator converts the signal into square pulses which are then counted
10.
The purpose of Auto Trim function in autopilot is to:
a) help Auto Pilot compensate for crosswind influence
b) tell the pilot when elevator trimming is required
c) control elevator trim tab in order to relieve elevator load
d) trim throttles to obtain smooth engine power variation
11.
The purpose of Auto Throttle is:
a) to synchronize engines to avoid "yawing"
b) automatic shut down of one engine at too high temperature
c) to deactivate manual throttles and transfer engine control to Auto Pilot
d) to maintain constant engine power or airplane speed
12.
When available, the yaw damper indicator supplies the pilot with information regarding the:
a) yaw damper action on the rudder
b) rudder position
c) yaw damper action only on the ground
d) rudder displacement by the rudder pedals
13.
On the ground, during a right turn, the turn indicator indicates:
a) needle in the middle, ball to right
b) needle to the right, ball to left
c) needle in the middle, ball to left
d) needle to the right, ball to right
14.
Indication of Mach number is obtained from:
a) A kind of echo sound comparing velocity of sound with indicated speed
b) Indicated speed and altitude using a speed indicator equipped with an altimeter type aneroid
c) Indicated speed (IAS) compared with true air speed (TAS) from the air data computer
d) An ordinary airspeed indicator scaled for Mach numbers instead of knots
15.
When, in flight, the needle of a needle-and-ball indicator is on the right and the ball on the left, the aircraft is:
a) turning left with too much bank
b) turning right with not enough bank
c) turning left with not enough bank
d) turning right with too much bank
16.
One of the errors inherent in a ring laser gyroscope occurs at low input rotation rates tending towards zero when a phenomenon known as 'lock-in' is experienced. What is the name of the technique, effected by means of a piezo-electric motor, that is used
a) zero drop
b) cavity rotation
c) dither
d) beam lock
17.
A vibration indicator receives a signal from different sensors (accelerometers). It indicates the:
a) vibration frequency expressed in Hz
b) vibration period expressed in seconds
c) vibration amplitude at a given frequency
d) acceleration measured by the sensors, expressed in g
18.
The altimeter consists of one or several aneroid capsules located in a sealed casing. The pressures in the aneroid capsule (i) and casing (ii) are respectively:
a) (i) static pressure at time t (ii) static pressure at time t - dt
b) (i) vacuum (or a very low pressure) (ii) static pressure
c) (i) static pressure (ii) total pressure
d) (i) total pressure (ii) static pressure
19.
The yaw damper system controls:
a) the rudder, with the angular rate about the yaw axis as the input signal.
b) the ailerons, with Mach Number as the input signal.
c) the rudder, with Mach Number as the input signal.
d) the ailerons, with the angular rate about the yaw axis as the input signal.
20.
A Stand-by-horizon or emergency attitude indicator:
a) Only works of there is a complete electrical failure
b) Contains its own separate gyro
c) Is fully independent of external energy resources in an emergency situation
d) Is automatically connected to the primary vertical gyro if the alternator fails
21.
Mach Trim is a device to compensate for:
a) weight reduction resulting from fuel consumption during the cruise
b) backing of the aerodynamic centre at high Mach numbers by moving the elevator to nose-up
c) the effects of fuel transfer between the main tanks and the tank located in the horizontal tail
d) the effects of temperature variation during a climb or descent at constant Mach
22.
A closed loop control system in which a small power input controls a much larger power output in a strictly proportionate manner is known as:
a) an autopilot.
b) a servomechanism.
c) a feedback control circuit.
d) an amplifier.
23.
In order to measure temperature the cylinder head temperature (CHT) gauge utilises a:
a) ratiometer circuit.
b) wheatstone bridge circuit.
c) thermocouple consisting of two dissimilar metals.
d) bourdon tube.
24.
The RPM indicator (or tachometer) of a piston engine can include a small red arc within the arc normally used (green arc) In the RPM range corresponding to this small red arc the:
a) rating is the maximum possible in continuous mode
b) propeller efficiency is minimum at this rating
c) propeller generates vibration, continuous rating is forbidden
d) rating is the minimum usable in cruise
25.
Considering an airspeed indicator, a second stripped needle, if installed, indicates:
a) maximum operating speed (VMO).
b) never-exceed speed (VNE) or maximum operating speed (VMO), depending on which is the higher.
c) never-exceed speed (VNE) or maximum operating speed (VMO), depending on which is the lowest.
d) never-exceed speed (VNE).
26.
The signal supplied by a transmitter fitted with a magnetic sensor, connected to an RPM indicator is:
a) a DC voltage varying with the RPM ; the indicator is a simple voltmeter with a rev/min. scale
b) an AC voltage varying with the RPM ; the indicator rectifies the signal via a diode bridge and is provided with a voltmeter
c) a three-phase voltage frequency varies with the RPM; the indicator is provided with a motor which drives a magnetic tachometer
d) an AC voltage, the frequency of which varies with the RPM; the indicator converts the signal into square pulses which are then counted
27.
In the event of a conflict, the TCAS 2 (Traffic Collision alert and Avoidance System) presents warnings to the crew such as:
a) "Glide Slope"
b) "Too low terrain"
c) "Turn left" or "Turn right"
d) "Climb" or "Descent"
28.
Mode "Localizer ARM" active on Flight Director means:
a) Localizer ALARM, making localizer approach not authorized
b) Localizer is armed and coupling will occur when flag warning disappears
c) Coupling has occurred and system provides control data to capture the centreline
d) System is armed for localizer approach and coupling will occur upon capturing centre line
29.
Different pressure sensors are used according to the intensity of the pressure measured (low, medium or high) Classify the following sensors by order of increasing pressure for which they are suitable: 1- bellows type 2- Bourdon tube type 3- aneroid capsule type
a) 2,1,3
b) 1,2,3
c) 3,1,2
d) 3,2,1
30.
The transmitter of RPM indicator may consist of: 1- a magnetic sensor supplying an induced AC voltage 2- a DC generator supplying a DC voltage 3- a single-phase AC generator supplying an AC voltage 4- a three-phase AC generator supplying a three-phase voltage The combination regrouping all the correct statements is:
a) 1,4
b) 2,3,4
c) 1,2,3,4
d) 1,2,3
31.
An aircraft is flying at flight level FL180 and Mach number 0.36. Its onboard thermometer reads TAT = - 5°C. Considering that the probe recovery coefficient is 0.84, the present weather conditions compared with the standard atmosphere are:
a) Standard
b) Standard + 10°C
c) Standard + 20°C
d) Standard + 30°C
32.
An aircraft is equipped with two altimeters. One is compensated for position error and the other one is not. During a straight symmetrical flight, all other factors being equal:
a) the error between the two altimeters does not depend on the speed.
b) the greater the speed, the greater the error between the two altimeters
c) the lower the speed, the greater the error between the two altimeters.
d) the greater the speed, the lower the error between the two altimeters
33.
A gyromagnetic compass is a system which always consists of: 1 - a horizontal axis gyro 2 - a vertical axis gyro 3 - an earth's magnetic field detector 4 - an erection mechanism to maintain the gyro axis horizontal 5 - a torque motor to make the gyro precess in azimuth The combination regrouping all the correct statements is:
a) 2, 3, 5.
b) 1, 3, 4, 5.
c) 2, 3.
d) 1, 4.
34.
Which one of the following statements is true with regard to the operation of a Mach trim system:
a) It operates over the full aircraft speed range.
b) It only operates above a pre-determined Mach number.
c) It operates to counteract the larger than normal forward movements of the wing centre of pressure at high subsonic airspeeds.
d) It only operates when the autopilot is engaged.
35.
When, in flight, the needle and ball of a needle-and-ball indicator are on the left, the aircraft is:
a) turning left with too much bank
b) turning right with too much bank
c) turning right with not enough bank
d) turning left with not enough bank
36.
Concerning the TCAS (Traffic Collision Avoidance System):
a) No protection is available against aircraft not equipped with a serviceable SSR transponder
b) Resolution Advisory (RA) must not be followed without obtaining clearance from ATC
c) In one of the system modes, the warning: "PULL UP" is generated
d) In one of the system modes, the warning: "TOO LOW TERRAIN" is generated
37.
In an engine vibration monitoring system for a turbojet any vibration produced by the engine is:
a) inversely proportional to engine speed.
b) amplified and filtered before being fed to the cockpit indicator.
c) fed directly to the cockpit indicator without amplification or filtering.
d) directly proportional to engine speed.
38.
The flight director is engaged in the heading select mode (HDG SEL) , heading 180° selected. When heading is 160°, the vertical bar of the FD:
a) is cantered if the aircraft has a 20° left drift.
b) is cantered if the bank angle of the aircraft is equal to the bank angle computed by the flight director calculator.
c) cannot be cantered.
d) is cantered if the aircraft has a 20° right drift.
39.
When, in flight, the needle of a needle-and-ball indicator is on the left and the ball on the right, the aircraft is:
a) turning left with not enough bank
b) turning left with too much bank
c) turning right with not enough bank
d) turning right with too much bank
40.
In a turn at a constant angle of bank, the turn indicator reading is:
a) independent to the aircraft true airspeed
b) proportional to the aircraft weight
c) proportional to the aircraft true airspeed
d) inversely proportional to the aircraft true airspeed
41.
If an EPR is set at a constant barometric pressure, with an increasing OAT, the thrust
a) varies according to the characteristics of the engine
b) remains constant
c) increases
d) decreases.
42.
On the ground, during a left turn, the turn indicator indicates:
a) needle in the middle, ball to the left
b) needle to the left, ball to the left
c) needle to the left, ball to the right
d) needle in the middle, ball to the right
43.
A radio altimeter can be defined as a:
a) ground radio aid used to measure the true height of the aircraft
b) self-contained on-board aid used to measure the true height of the aircraft
c) ground radio aid used to measure the true altitude of the aircraft
d) self-contained on-board aid used to measure the true altitude of the aircraft
44.
The TCAS 2 (Traffic Collision Avoidance System) gives avoidance resolutions:
a) in horizontal and vertical planes
b) only in the horizontal plane
c) based on speed control
d) only in the vertical plane
45.
The airspeed indicator of a twin-engine aircraft comprises different sectors and colour marks. The blue line corresponds to the:
a) speed not to be exceeded, or VNE
b) optimum climbing speed with one engine inoperative, or Vy
c) minimum control speed, or VMC
d) maximum speed in operations, or VMO
46.
At a low bank angle, the measurement of rate-of-turn actually consists in measuring the:
a) yaw rate of the aircraft.
b) bank of the aircraft.
c) pitch rate of the aircraft.
d) roll rate of the aircraft.
47.
The principle of the TCAS (Traffic Collision Avoidance Systems) is based on the use of:
a) transponders fitted in the aircraft
b) air traffic control radar systems
c) F.M.S. (Flight Management System)
d) airborne weather radar system
48.
In the absence of position and instrumental errors, IAS is equal to:
a) CAS
b) KAS
c) EAS
d) TAS
49.
The rate-of-turn is the:
a) aircraft speed in a turn
b) change-of-heading rate of the aircraft
c) yaw rate in a turn
d) pitch rate in a turn
50.
The Ground Proximity Warning System (GPWS) generates the following sound signal or signals when the aircraft is sinking after a take-off or a go-around:
a) DON'T SINK always followed by WHOOP WHOOP PULL UP
b) DON'T SINK repetitive only
c) WHOOP WHOOP PULL UP repetitive only
d) DON'T SINK followed by WHOOP WHOOP PULL UP if the sink rate overshoots a second level
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