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INST-BNC TOTAL THEORY-MODULE2
1.
During deceleration following a landing in a southerly direction, a magnetic compass made for the northern hemisphere indicates:
a) no apparent turn.
b) no apparent turn only on northern latitudes.
c) an apparent turn to the east.
d) an apparent turn to the west.
2.
The compass heading can be derived from the magnetic heading by reference to a:
a) compass deviation card
b) map showing the isogonic lines
c) magnetic variation correction card
d) map showing the isoclinic lines
3.
The mach number is the:
a) corrected airspeed (CAS) divided by the local speed of sound
b) indicated airspeed (IAS) divided by the local speed of sound
c) equivalent airspeed (EAS) divided by the local speed of sound
d) true airspeed (TAS) divided by the local speed of sound
4.
The principle of a laser gyro is based on:
a) a gyroscope associated with a laser compensating for gimballing errors.
b) two rotating cavities provided with mirrors.
c) frequency difference between two laser beams rotating in opposite direction.
d) a gyroscope associated with a laser compensating for apparent wander due to the rotation of the earth.
5.
The gyromagnetic compass torque motor:
a) causes the directional gyro unit to precess
b) causes the heading indicator to precess
c) feeds the error detector system
d) is fed by the flux valve
6.
The indication of the directional gyro is valid only for a limited period of time. The causes of this inaccuracy are: 1 - rotation of the earth 2 - longitudinal accelerations 3 - aircraft's moving over the surface of the earth 4 - mechanical imperfections 5 - vertical components of the earth's magnetic field 6 - geometry of the gimbal system The combination regrouping all the correct statements is:
a) 1,3,4,6
b) 1,2,3,4,6.
c) 1,2,4,6.
d) 2,3,5.
7.
The Decision Height (DH) warning light comes on when an aircraft:
a) descends below a pre-set radio altitude.
b) passes over the outer marker.
c) passes over the ILS inner marker.
d) descends below a pre-set barometric altitude.
8.
During a climb, the total pressure probe of the airspeed indicator becomes blocked; if the pilot maintains a constant indicated airspeed, the true airspeed:
a) decreases until reaching the stall speed.
b) increases until reaching VMO.
c) decreases by 1% per 600 FT.
d) increases by 1% per 600 FT.
9.
If a manifold pressure gauge consistently registers atmospheric pressure, the cause is probably;
a) too high float level.
b) leak in pressure gauge line.
c) ice in induction system.
d) fuel of too low volatility.
10.
A pitot blockage of the ram air input with the static port open causes the airspeed indicator to:
a) operate normally.
b) react like an altimeter.
c) freeze at zero.
d) read like a vertical speed indicator.
11.
The velocity maximum operating (V.M.O.) is a speed expressed in:
a) true airspeed (TAS).
b) calibrated airspeed (CAS).
c) computed airspeed (COAS).
d) equivalent airspeed (EAS).
12.
During deceleration following a landing in a westerly direction, a magnetic compass made for the southern hemisphere indicates:
a) no apparent turn.
b) no apparent turn only on southern latitudes.
c) an apparent turn to the north.
d) an apparent turn to the south.
13.
A pilot wishes to turn right through 90° on to North at rate 2 at latitude of 40 North using a direct reading compass. In order to achieve this the turn should be stopped on an indicated heading of approximately:
a) 010°
b) 330°
c) 030°
d) 360°
14.
The principle of the Mach indicator is based on the computation of the ratio:
a) (Pt - Ps)/Ps
b) Pt/Ps
c) (Pt - Ps)/Pt
d) (Pt + Ps)/Ps
15.
In low altitude radio altimeters, the height measurement (above the ground) is based upon:
a) a wave transmission, for which the frequency shift by DOPPLER effect after ground reflection is measured.
b) a pulse transmission, for which time between transmission and reception is measured on a circular scanning screen.
c) a frequency modulation wave, for which the frequency variation between the transmitted wave and the received wave after ground reflection is measured.
d) a triangular amplitude modulation wave, for which modulation phase shift between transmitted and received waves after ground reflection is measured.
16.
A pilot wishes to turn left on to a southerly heading with 20° bank at a latitude of 20° North. Using a direct reading compass, in order to achieve this he must stop the turn on an approximate heading of:
a) 170°
b) 190°
c) 160°
d) 200°
17.
The heading information originating from the gyromagnetic compass flux valve is sent to the:
a) erector system.
b) error detector.
c) heading indicator.
d) amplifier.
18.
The artificial horizon uses a gyroscope with: (note: the degree(s) of freedom of a gyro does not take into account its rotor spin axis.)
a) one degree of freedom, and its rotor spin axis is continuously maintained to local vertical by an automatic erecting system.
b) two degrees of freedom, and its rotor spin axis is continuously maintained to local vertical by an automatic erecting system.
c) one degree of freedom, and its rotor spin axis is continuously maintained in the horizontal plane by an automatic erecting system.
d) two degrees of freedom, and its rotor spin axis is continuously maintained in the horizontal plane by an automatic erecting system.
19.
After an aircraft has passed through a volcanic cloud which has blocked the total pressure probe inlet of the airspeed indicator, the pilot begins a stabilized descent and finds that the indicated airspeed:
a) increases abruptly towards VNE
b) increases steadily
c) decreases steadily
d) decreases abruptly towards zero
20.
The input signal of the amplifier of the gyromagnetic compass resetting device originates from the:
a) directional gyro unit.
b) directional gyro erection device.
c) error detector.
d) flux valve.
21.
The magnetic heading can be derived from the true heading by means of a:
a) map showing the isogonal lines
b) map showing the isoclinic lines
c) compass swinging curve
d) deviation correction curve
22.
The purpose of the vibrating device of an altimeter is to:
a) reduce the hysteresis effect
b) inform the crew of a failure of the instrument
c) reduce the effect of friction in the linkages
d) allow damping of the measurement in the unit
23.
With constant weight and configuration, an aircraft always takes off at the same:
a) true airspeed.
b) equivalent airspeed.
c) ground speed.
d) indicated airspeed.
24.
During deceleration following a landing in a westerly direction, a magnetic compass made for the northern hemisphere indicates:
a) no apparent turn only on northern latitudes.
b) no apparent turn.
c) an apparent turn to the north.
d) an apparent turn to the south.
25.
VNO is the maximum speed:
a) which must never be exceeded.
b) at which the flight controls can be fully deflected.
c) with flaps extended in landing position.
d) not to be exceeded except in still air and with caution.
26.
A pitot tube covered by ice which blocks the ram air inlet will affect the following instrument (s):
a) altimeter only.
b) vertical speed indicator only.
c) airspeed indicator only.
d) airspeed indicator, altimeter and vertical speed indicator.
27.
An airborne instrument, equipped with a gyro with 1 degree of freedom and a horizontal spin axis is a: NB: the degree(s) of freedom of a gyro does not take into account its rotor spin axis.
a) directional gyro
b) gyromagnetic compass
c) turn indicator
d) fluxgate compass
28.
During deceleration following a landing in an easterly direction, a magnetic compass made for the northern hemisphere indicates:
a) an apparent turn to the south.
b) an apparent turn to the north.
c) no apparent turn.
d) no apparent turn only on northern latitudes.
29.
VNE is the maximum speed:
a) with flaps extended in landing position
b) not to be exceeded except in still air and with caution
c) at which the flight controls can be fully deflected
d) which must never be exceeded
30.
The most significant advantages of an air data computer (ADC) are: 1. Position error correction 2. Hysteresis error correction 3. Remote data transmission capability 4. Gimballing errors correction The combination regrouping all the correct statements is:
a) 1,3.
b) 1,2,3.
c) 1,2,4.
d) 2,3,4
31.
Compared with a conventional gyro, a laser gyro:
a) has a fairly long starting cycle
b) has a longer life cycle
c) is influenced by temperature
d) consumes a lot of power
32.
The "Bourdon tube" is used to measure:
a) temperature.
b) pressure.
c) quantity.
d) a flow rate.
33.
The characteristics of the directional gyro used in a gyro stabilised compass system are: NB: the degree(s) of freedom of a gyro does not take into account its rotor spin axis.
a) one degree of freedom, whose horizontal axis is maintained in the horizontal plane by an automatic erecting system.
b) one degree of freedom, whose vertical axis, aligned with the real vertical to the location is maintained in this direction by an automatic erecting system.
c) two degrees of freedom, whose horizontal axis corresponding to the reference direction is maintained in the horizontal plane by an automatic erecting system.
d) two degrees of freedom, whose axis aligned with the vertical to the location is maintained in this direction by an erecting system.
34.
The limits of the white scale of an airspeed indicator are:
a) VSI for the lower limit and VFE for the upper limit
b) VSI for the lower limit and VLE for the upper limit
c) VSO for the lower limit and VFE for the upper limit
d) VSO for the lower limit and VLE for the upper limit
35.
The Yaw Damper system: 1 - counters any wrong pilot action on the rudder pedals; 2 - counters dutch roll; 3 - is active only when autopilot is engaged. The combination regrouping all the correct statements are:
a) 2
b) 1, 2.
c) 2, 3.
d) 1, 2, 3.
36.
The quadrantal deviation of the magnetic compass is due to the action of:
a) the soft iron pieces influenced by the geomagnetic field
b) the hard iron pieces influenced by the geomagnetic field
c) the hard iron pieces influenced by the mild iron pieces
d) the hard iron ices and the soft iron pieces influenced by the hard iron pieces
37.
The reading of a Mach indicator is independent of:
a) the static pressure
b) the total pressure
c) the outside temperature
d) the differential pressure measurement
38.
Calibrated Air Speed (CAS) is obtained from Indicated Air Speed (IAS) by correcting for the:
a) position and instrument errors.
b) instrument error.
c) position and density errors.
d) density error.
39.
During deceleration following a landing in an easterly direction, a magnetic compass made for the southern hemisphere indicates:
a) an apparent turn to the north.
b) an apparent turn to the south.
c) no apparent turn only on southern latitudes.
d) no apparent turn.
40.
VFE is the maximum speed:
a) with the flaps extended in take-off position.
b) with the flaps extended in a given position.
c) at which the flaps can be operated in turbulence.
d) with the flaps extended in landing position.
41.
A pilot wishes to turn right on to a southerly heading with 20° bank at a latitude of 20° North. Using a direct reading compass, in order to achieve this he must stop the turn on an approximate heading of:
a) 170°
b) 150°
c) 180°
d) 200°
42.
At a given altitude, the hysteresis error of an altimeter varies substantially with the:
a) mach number of the aircraft.
b) time passed at this altitude.
c) static temperature.
d) aircraft attitude.
43.
A pilot wishes to turn left on to a northerly heading with 10° bank at a latitude of 50° North. Using a direct reading compass, in order to achieve this he must stop the turn on an approximate heading of:
a) 330°
b) 030°
c) 015°
d) 355°
44.
Given: - Ts the static temperature (SAT) - Tt the total temperature (TAT) - Kr the recovery coefficient - M the Mach number The total temperature can be expressed approximately by the formula:
a) Tt = Ts/(1+0.2 Kr.M²)
b) Tt = Ts(1-0.2 M²)
c) Tt = Ts(1+0.2 Kr.M²)
d) Tt = Ts(1+0.2 M²)
45.
The operation of the radio altimeter of a modern aircraft is based on:
a) a combination of frequency modulation and pulse modulation.
b) frequency modulation of the carrier wave.
c) pulse modulation of the carrier wave.
d) amplitude modulation of the carrier wave.
46.
During deceleration following a landing in a northerly direction, a magnetic compass made for the southern hemisphere indicates:
a) an apparent turn to the west.
b) no apparent turn.
c) an apparent turn to the east.
d) no apparent turn only on southern latitudes.
47.
Total Air Temperature (TAT) is:
a) higher or equal to Static Air Temperature (SAT), depending on mach number and SAT.
b) lower than Static Air Temperature (SAT), depending on altitude and SAT.
c) lower than Static Air Temperature (SAT), depending on mach number and SAT.
d) higher or equal to Static Air Temperature (SAT), depending on altitude and SAT.
48.
A VMO-MMO warning device consists of an alarm connected to:
a) a barometric aneroid capsule subjected to a static pressure and an airspeed sensor subjected to a dynamic pressure.
b) a barometric aneroid capsule and an airspeed sensor subjected to dynamic pressure.
c) a barometric aneroid capsule subjected to a dynamic pressure and an airspeed sensor subjected to a static pressure.
d) a barometric aneroid capsule and an airspeed sensor subjected to a static pressure.
49.
Given: M is the Mach number Ts is the static temperature Tt is the total temperature
a) Ts = Tt.(1+0.2. M²)
b) Ts = Tt/( 0.2 M²)
c) Ts = Tt.(0.2. M²)
d) Ts = Tt /(1+0.2. M²)
50.
An airborne instrument, equipped with a gyro with 2 degrees of freedom and a horizontal spin axis is: NB: the degree(s) of freedom of a gyro does not take into account its rotor spin axis.
a) a fluxgate compass
b) a turn indicator
c) an artificial horizon
d) a directional gyro
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