3272-11-sys (1.10)

Electrical driven gyros are. rotated faster than air driven gyros. rotated at the same speed as air driven gyros. rotated slower than air driven gyros.

In a ratiometer temperature indicating circuit, there is a break in the circuit to the bulb. This will give. full scale deflection. no scale deflection. mid scale deflection.

With the gyro at normal running speed, a torque applied to the inner gimbal ring of a vertical gyro will cause the. inner ring to move. outer ring to move. outer and inner ring to move.

When an aircraft is descending, the pressure in the altimeter case. will cause the aneroid capsule to contract. will cause the aneroid capsule to expand. will not affect the aneroid capsule.

The supply of Desynn indicating system. is alternating current at 400 c/s. is alternating current at 50 c/s. is direct current.

A sensitive altimeter reading 100 ft. when the millibar scale is set to the atmospheric pressure at airfield level (QFE). indicates that the instrument is unserviceable. indicates that the aircraft is in a region of high pressure and the reading must be corrected to I.S.A. standards. indicates that the airfield is 100 ft. above sea level.

After using a pitot-static test set the pressure in the aircraft static system should be released to the atmosphere by. venting the static system via an internal bleed in the test set. removing the static connector from its static vent. removing the static connector from its static vent after waiting for a period of three minutes.

An altimeter is operated. by the vacuum system. by the static system. by the pitot system.

What is the purpose of the bimetallic strip in the altimeter?. Corrects for capsule elasticity. Compensates for non-linear tension in the hairspring. Compensates for change in density.

Which axis does the directional gyro spin on?. Vertical. Horizontal. Both vertical and horizontal.

The capsule in an altimeter responds to. differential pressure. gauge pressure. absolute pressure.

The aeroplane monitor on the artificial horizon is fitted to the. inner gimbal. rotor. instrument case.

True airspeed in an Air Data Computer is a function of. airspeed and temperature. airspeed and altitude. mach number and temperature.

The advantage of an instantaneous V.S.I. over a conventional one is. it does not require pitot/static pressure. it has an accelerometer which prevents the lag of a conventional one. it does not require warming up.

For a particular I.A.S. as the density decreases with altitude, the T.A.S. remains the same. increases. decreases.

The type of gyro used in a gyro compass is a. directional gyro. rate gyro. vertical gyro.

A desiccant used in the storage of instruments. is sodium-bicarbonate. is silica-gel. is anti-freeze oil.

Bourdon Tubes have. toroidal cross section. circular cross section. oval cross section.

In a Bourdon tube. one end is sealed and the other end open to atmosphere. both ends sealed. one end is sealed and the other end open to the pressure source.

Pressure gauge calibrators (Dead Weight Testers) use the. Boyle's Law. Brahm's press principle. Charle's Law.

The fluid suitable for use in a Dead Weight Tester is. anti-freeze oil. kerosene. castor-oil.

The distance readout on an HSI is. dialled in by the pilot. from the aircraft ATC system. from the aircraft DME system.

A gyroscope having one plane of freedom at right angles to the plane of rotation, and its gimbal restrained either electrically or by a spring, is known as. a rate gyro. a tied gyro. an earth gyro.

Pressure may be expressed in. force per unit area. force per unit volume. weight or mass.

What is the purpose of the hair spring in a Bourdon tube pressure gauge?. To reduce 'backlash'. To act a controlling force. To return the pointer to zero.

The ADIs attitude information is normally obtained from the aircraft's. attitude rate gyros. directional gyros. vertical gyros.

One dot VOR deviation represents. 5°. 1¼°. 2 miles.

An instrument used for measuring negative pressures. has the Bourdon tube reversed within the case. cannot be of the Bourdon tube type. has anti-clockwise pointer movement if Bourdon tube operated.

An absolute pressure gauge measures. the applied pressure referred to atmospheric pressure. pressures extremely accurately. the applied pressure referred to a perfect vacuum.

Gauge pressure as indicated on a direct reading Bourdon Tube pressure gauge is equal to. absolute pressure plus atmospheric pressure. absolute pressure minus atmospheric pressure. atmospheric pressure minus absolute pressure.

The to/from indicator on an HSI informs the pilot of which direction he is tracking relative to. an ILS station. a VOR station. an ADF station.

A pressure gauge, such as a hydraulic brake pressure gauge, indicates 1,000 p.s.i. In terms of absolute pressure, this represents. 1,014.7 p.s.i. 1,000 p.s.i. 985.3 p.s.i.

To fill a Dead Weight Tester. screw in hand wheel and fill reservoir. remove platform and fill cylinder. screw out hand wheel and fill reservoir.

With an aircraft on the ground and QNH set on the millibar scale of the altimeter, the altimeter will read. the airfield height. off scale. zero.

When checking a sensitive altimeter on a pre-flight inspection. the ambient air pressure is set on the millibar scale. the standard sea level barometric pressure is always set on the millibar scale. the ambient air pressure corrected for temperature is set on the millibar scale.

The HSI compass card is positioned by the. compass system. heading select knob. aircraft ADF system.

The applied pressure to an A.S.I. varies with the. cube root of the speed. square root of the speed. square of the speed.

The supply to an A.S.I. is static pressure only. is pitot pressure only. are pitot and static pressure.

The capsule for an A.S.I. will be expanding when the aircraft is. climbing. accelerating. decelerating.

The deflection of the ADI command bars when flying a localiser approach is proportional to. the difference between the amplitudes on the two modulations. the difference in amplitude of the two r.f. carriers. the sum of the amplitude of the two modulations.

If an aircraft is flying straight and level in still air, airspeed will be. equal to the ground speed. greater than the ground speed. less than the ground speed.

If an aircraft flying in still air at 400 knots, encounters a head wind of 50 knots, its ground speed is. 450 knots. 350 knots. 400 knots.

To provide a linear scale on an A.S.I., a. ranging bar and screws are fitted. bi-metal corrector is employed. 10 to 1 gearing is used.

A machmeter is an instrument which indicates the speed of. sound relative to the aircraft's altitude. the aircraft relative to the local sonic speed. the aircraft relative to the speed of sound at ground level.

The moving element of a ratiometer has. one coil. three coils. two coils.

When carrying out a pressure leak test on an altimeter, you are checking for leaks in the. instrument case. pressure chamber. capsule stack.

If an altimeter millibar scale was set to 1013.25 and the barometric pressure at that time was 1020, the altimeter should read. positive altitude. below zero feet (negative altitude). zero feet.

An aircraft flying towards a VOR station shows indications of 120° and 'TO'. After passing over the station, on the same course, the indications will be. 300° and TO. 120° and FROM. 300° and FROM.

The command bars in a flight director system indicate. the required path with respect to actual path. true horizon. the actual path with respect to required path.

When changing a windscreen panel which has a standby magnetic compass located in the vicinity. The attachment bolts should be tightened in an anti-clockwise direction around the window. precautions should be taken that the bonding tag is attached to the correct attachment bolt. precautions must be taken to ensure that the attachment bolts are of the specified type.

On a conventional RMI the angle between the compass datum and the radio pointer arrow is. the magnetic bearing. the complimentary bearing. the relative bearing.

A compass is made aperiodic by. using fluid. tying it to the case. locking.

Isogonal lines link places of. different variation. equal variation. zero variation.

In an artificial horizon Pendulosity Error is caused by. displacement of erection control device. bottom lightness of inner gimbals. bottom heaviness of inner gimbals.

If True Airspeed is 470 knots, what is the Equivalent Air speed?. 662 knots. 550 knots. 278 knots.

If the Airspeed Indicator reading is 300 Knots, what is the Calibrated Airspeed?. 293 knots. 296 knots. 304 knots.

In an Artificial Horizon, Erection Error is caused by. displacement of erection control device. bottom lightness of inner gimbals. bottom heaviness of inner gimbals.

A Vertical Speed indicator Metering Unit Consist of. an orifice. both an orifice and a capillary. a capillary.

Flux Valve senses angle of horizontal component with respect to the aircraft's. both lateral and longitudinal axis. lateral axis. longitudinal axis.

The manual VOR input is for. the radio magnetic indicator. the course deviation bar. the ADI.

After correction of the north-south heading reading on a compass swing, the resultant correction is known as. correct heading. residual deviation. magnetic heading.

Apparent drift on directional gyro is corrected by. mercury switch on outer ring. series of balance holes drilled in gyro rotor. an adjustment nut on inner ring.

If a micro adjuster is replaced in a compass system, you would. carry out a new compass swing. set it up the same as the one removed. set it to zero datum.

In a compass swing: North error -2 degrees, South error + 2 degrees. The coefficient C is. -2 degrees. 0 degrees. +2 degrees.

Purpose of Altitude Alerting is to warn the pilot of. approach to or deviation from selected altitude. altitude information. selection of altitude.

Aircraft certified before 1997 with RVSM, maximum tolerance for the system is. +/- 500ft system tolerance. +/- 200ft system, +/-50ft for instrument error. +/- 300ft system, +/-50ft for instrument error.

Machmeters work on. static. pitot and static. pitot.

An aircraft with Mach warning will warn. when M(base=crit) is reached. when Mach 1 is exceeded. when envelope limit is reached.

An HSI provides what information?. VOR, plan, ILS, map, radar. VOR, map, attitude, ILS. VOR, ILS, plan, attitude.

Compressibility error in a pitot head is caused by. misalignment of pitot head. compression of air in the tube at high speed. blockage in the pitot tube.

The earth's magnetic field is. horizontal across the earth. vertical at the poles, horizontal at the magnetic equator. vertical across the earth.

The magnets in a compass corrector micro-adjuster are. adjusted for coefficient A. always set to the neutral position. adjusted to obtain the neutral position.

There is an air bubble in the compass: The fluid is not aerated properly. It is due to high altitude. It is required, to compensate for expansion of the fluid.

A flux detector output is a. A.C. voltage at the same frequency as the excitation voltage. rectified D.C. voltage. A.C. voltage at twice the frequency of the excitation voltage.

Primary Radar is. reflected signal from aircraft's own radar. for ground use only. interrogation of aircraft's transponder.

The general function of the ATC is to. interrogate other aircraft which reply with an identification signal. interrogate the ground station which replies with an identification. reply with an identification signal after being interrogated by a ground station.

ACARS is primarily used for communicating with. maintenance base. other aircraft. air traffic control.

SELCAL is used to. alert ground stations. alert other aircraft. monitor ground signals.

HF communication frequency is in the range. 23 - 30 kHz. 3-30 MHz. 108 - 118 MHz.

The polythene sleeving over a HF antenna is to stop. lightning strike. precipitation static. moisture ingress and corrosion.

The term HIRF means. High Interference Radiated Fields. High Intensity Radiated Fields. High Intensity Radio Fields.

When an autopilot is Fail Passive,. the aircraft reverts to fail operational autopilot. the pilot must resume control and land the aircraft. the autoland can continue.

The fundamental theory of operation of a ranging radar is. frequency of returns. percentage of emitted signal returned. time taken to receive returns.

On an aircraft communication system, HIRF interference is most prominent. during transmissions only. at specific frequencies. across the whole frequency spectrum.

What clock is used in a GPS satellite?. Clock with battery. Atomic. Quartz.

With Control Wheel Steering (CWS), if the flight path is disturbed by the pilot, the course will be corrected by the. autopilot panel. flight director input. normal flight control.

An HF coupling is used to match the. receiver. boom-set (headphones and mic). aerial.

On an aircraft's navigation display, distance measuring equipment gives. slant range to beacon. height and range to beacon. ground range to beacon.

On a modern aircraft flight instrument display system, radio deviation is shown on the. EHSI. EADI. EHSI & EADI.

On a flight management system, the database is updated every. 1 Month. 2 Months. 3 Months.