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WorksheetsAircraft Instrument Induction Quiz AV 18/25
Total questions: 105
Worksheet time: 54mins
What is the purpose of the pitot static system of an aircraft?
Sense & measure the pitot pressure only
Sense & measure the static pressure only
Sense & measure pitot pressure & static pressure
Sense & measure forward motion only
What is meant by total pressure?
Pitot pressure only
Static Pressure only
Speed pressure
Pitot pressure and Static pressure
Atmospheric Pressure surrounding the aircraft is known as.
Pitot pressure
Static pressure
Impact pressure
Total pressure
Pressure from Forward motion of aircraft is known as.
Pitot pressure
Total pressure
Impact pressure
Static pressure
3 types of information sensed and measured by Pitot and Static System are?
Speeds, attitude and rate of change of altitude
Rate of change of altitude, speeds and attitude
Speeds, altitude and rate of change of altitude
Speed, attitude and forward motion
What are the flight instruments connected to the Pitot Static system?
Air Speed Indicator, Altimeter and Vertical Speed Indicator
Attitude Indicator, Altimeter and Vertical Speed Indicator
Attitude Indicator, Altimeter and Barometer
Total temperature, Altimeter and Attitude
How many indicator of Pitot Static System are there in the cockpit.
1
2
3
4
Where is the drain valves (water drain traps) normally located on the pitot static system?
Normally located at aircraft undercarriage bay
Below part of the pitot and static probe
At the lowest part of the Pitot Static System
At the middle pitot probe
The water drain valves normally located.
Normally located at aircraft undercarriage bay
Below part of the pitot and static probe
At the indicator
At the lowest part of the Pitot Static System
Where is the electrical heating element fitted in the pitot static system?
Within the probe head
Within Encoding Altimeter
Within Mach Airspeed Indicator
At the cockpit
Probe head of Pitot Static system is normally equipped with.
Heat sensor
Heating element
Cooling element
Sensing element
The switch that control the electrical heating element is located in the.
Cockpit
Avionic rack
It's automatically control
Electrical rack
Where is the location of switch that controls the electrical heating element in Pitot Static system normally located?
Cockpit
Wing Span
Avionic Compartment
Electrical compartment
The complexity of a pitot static system depend on
Type of the aircraft
Size of the aircraft
Model of the aircraft
Type & Size of the aircraft
The difference between the total pressure & static pressure is called the.
Impact Pressure
Ram air effect Pressure
Dynamic Pressure
Absolute pressure
The pitot static probe consist of 2 tubes, the outer tube senses ………… & inner tube senses ……….
Pitot pressure , Static pressure
Dynamic pressure , Static pressure
Static pressure, Pitot pressure
Absolute pressure , dynamic pressure
Voltage required to operate the electrical heater element for the pitot static probe is.
12 VDC
24 VDC
115 VAC
25 VDC
How is the condensation water drained from the Pitot static system?
by using pump
by Pitot Static Probe
by Instrument manifold
by Water Drain Valves
What will be the effect if water is not drained out from the pitot static system?
Inaccurate indication
Accurate indication
No effect on the indication
Pitot will damage
The other option to recover during 'failed heater circuit' is?
It doesn't affect flight operation
Emergency landing
Alternate pitot static system (standby system)
Fire heat sensor
What is the material not used for the pitot static pipelines?
Aluminiums
Stainless Steel
Copper
Brass
To eliminate pressure drop & time lag, the pitot static system required
Distance of the pipelines
Distance and length pipelines
Diameter of the pipelines
Distance and Diameter of the pipelines
To differentiate between pitot and static pipelines, what are the diameters used for both pipelines?
5/16 inch for both pitot and static pipelines
5/16 inch for pitot pipes and 3/8 inch for static pipelines
3/8 inch for pitot pipes and 5/16 inch for static pipelines
1/4 inch for pitot pipes and 1/2 inch for static pipelines
Pitot and Static pipelines are identified by.
Conventional Colour Codes
Bar codes
Black and White Stripes
Segment
How are the marking made on the pitot static pipelines
Tapes spaced at frequent interval along the Pipelines
Black and White Stripes
Red and yellow tape
Red and white tape
Under ICAO, what is the Standard Atmosphere pressure at sea level?
1011.25 hPa
1012.25 hPa
1013.25 hPa
1112.25 hPa
What is the acronym of ICAO?
International Civil Aircraft Organisation
International Cooperation Aviation Organisation
International Chambers Aviation Organisation
International Civil Aviation Organisation
Formula for the Dynamic pressure is
Pitot Pressure + Static pressure
Pitot pressure - Static pressure
Pitot pressure / Static pressure
Static pressure - Pitot pressure
Define the term ISA
International Standard Altitude
International Standard Atmosphere
Internal Surrounding Atmosphere
ICAO Standard Atmosphere
What is the purpose of ICAO Standard atmosphere?
Provide standard values of the atmosphere
Provide altitude reading of an aircraft
Provide speed of an aircraft
Provide value mean sea level
Defined values of atmosphere at standards condition or at mean sea level.
1012.25 hPa, 29.90 Hg at 15⁰C
1013.25 hPa, 29.92 Hg at 15⁰C
1014.25 hPa, 29.92 Hg at 15⁰C
1013.25 kPa, 29.90 Hg at 17oC
The temperature lapse rate of ISA is
Minus 2o C per 10000 ft
10⁰ C per 100 ft
30 ⁰ C per 100 ft
Minus 2⁰C every 1000 ft
What is the purpose of Airspeed Indicator?
Indicate the height of the aircraft relative to the surrounding air
Indicate the rate of climb & descent of the aircraft relative to the surrounding air
Indicate the speed of the aircraft relative to the surrounding air
Indicate air flow at intake manifold
What type of pressure used to operate Airspeed Indicator?
Pitot Pressure
Static Pressure
Pitot & Static pressure
Barometic pressure
What happened if greater the differences between the 2 pressure reading ? (pitot & static)
The airspeed indicator will be less
The airspeed indicator will maintain constant
The greater will be the airspeed indicator
Will indicate false reading
Uncorrected airspeed which is directly read from indicator is known as.
IAS
CAS
TAS
ISA
Purpose for the Airspeed Indicator (ASI) is to?.
Show the speed of an aircraft relatives to the surrounding air
Show the height of an aircraft relatives to the ground
Show rate of altitude of an aircraft relatives to the change of static pressure
Show the speed of compressor relative to the speed of aircraft
What is the measuring element for the airspeed indicator?
Defucer
Aneroid
Bellow
Diaphragm
The principle operation of the ASI is based on.
Total pressure
Dynamic pressure
Differential Pressure
Differential temperature
ASI is calibrated in.
Knots
Feet
Feet per minutes
Yard
What will happen to the diaphragm of the ASI when aircraft forward speed increases?
Contract
Expand
Expand & Contract
Not change
In the ASI, movement of a pointer is.
Proportional to the dynamic pressure
Inversely proportional to the dynamic pressure
Remain constant with the dynamic pressure
Proportional to the altitude
When the aircraft speed is constant with increase in altitude, the ASI indicator pointer will.
Fluctuate
Increase
Remain constant
Decrease
What is the purpose of Range Marking on Airspeed indicator?
To indicate the performance of the aircraft engine
To indicate capability of the aircraft structure
To indicate minimum, maximum, safety speeds or speed range
To indicate capability of the aircraft engine
What is the purpose of aircraft Altimeter?
To indicate the speed of the aircraft
Provide the rate of climb & descent of an aircraft
Provide an accurate indication of the aircraft's height above ground or sea level
To indicate the attitude of the aircraft
The Altimeter scale is calibrated in.
Knots
Feet/min
Meter
Feet
Which of the statement below is not concerned in altitude measuring unit?
Hectopascal (hPa)
Inch Mercury (in Hg)
Centimeter square (cm²)
Meter square (m2)
Vertical Speed Indicator is calibrated in.
Knots
Feet
Feet / min
Meter
What is the pressure sensing element of an Altimeter?
Diaphragm capsule
Aneroid capsule
Bellow capsule
Bourdon tube
How many classes of synchronous system?
2 classes.
3 classes
4 classes
5 classes
What are the common features in DC and AC synchro systems?
Transmitter only
Receiver only
Transmitter and Receiver
Antenna
How many types of Desynn Synchro being used for transmitting and receiving information on the aircraft?
Slap desynn, rotary motion and sliding motion
Rotary motion, linear motion and slab desynn
Bernoullie motion, slab desynn and sliding motion
Bernoullie motion, slab desynn and linear motion
What type of DC synchronous system normally used in aircraft for indicating positions & liquid contents?
Linear motion
Slab desynn
Rotary motion (toroidal resistance)
Micro Desynn
Which component is NOT part of a Basic Synchro transmitter?
Resistor wound
Wiper Contact Arm
Permanent magnet
Antenna
In a Toroidal resistance transmitter indicator system, power supply is connected thru the.
Brushes
Wiper Arm contact
Rotor
Ground
What type of magnet is used in the receiver of DC synchro?
Single pole permanent magnet
2 Pole Permanent Magnet
Temporally
3 pole Permanent Magnet
What is the purpose for the pull off magnet found in the receiver of the rotary motion?
Act as a power failure device
To counteract the any misalignment of the rotor
Prevent from voltage spikes
To increase the power
Cyclic error occurs in the rotary motion & linear motion due to.
Power failure
Magnetism
Power increase
Friction
How many groups are there in the Alternating-current synchronous system?
2 groups
3 groups
4 groups
5 groups
What is the purpose of Torque Synchro?
Used for transmission of angular information
To produce error voltage signal in the receiver element
To detect & transmit 2 different & sum angular position error signal
To provide high power
The synchro which produces a low torque is.
Torque synchro
Control synchro
Differential synchro
Resolver synchro
The Torque Synchro system comprises of.
Transmitter (TX) only
Receiver (RX) only
Transmitter (TX) and Receiver (RX)
Transmitter and repeater
In the torque synchro system, TR (stator) angle apart from each other is about.
60⁰
90⁰
100o
120o
When the rotor is aligned with its respective stator it is said to be at.
Electrical Zero
Alignment
Electrical Null
Peak power
In Torque Synchro, when the rotor TX and TR are in the same angular position is said to be at.
Null
Electrical Potential
Misalignment
Alignment
What is the purpose of Magnetic Compass or standby compass?
Indicates the magnetic heading of the aircraft
Indicates the true heading of the aircraft
Indicates the aircraft flight path to destinations
Indicates the closest airport
What is the other option can be used when a Heading Gyro Indicator & Navigation failed?
Emergency Horizon
Air data indicator
Automatic Directional Finder
Magnetic Compass
Operational principle of magnetic compass is based on the fundamental of.
Magnetism
Gravity & Centrifugal Force
Centre of Mass
Longitude and latitude
For questions No. 69 to 70, referred the diagram below. Diagram above shows the cross sectional view of a magnetic compass, name item "A" and what is the function of that item?
Diaphragm; to allow for any expansion or contraction of the liquid
Bellow; to absorb any vibration during aircraft flied
Diaphragm; to prevent the liquid from leaks
Bellow; to prevent magnetic effect
Item "B" of magnetic compass as on above diagram is called as.
Disc
Cork
Buoyant
Float
What type of magnetic material used on the Magnetic Compass?
2 permanent magnet
2 magnetized bar magnet
2 magnetized steel needles
3 Pole magnets
What fluid is filled in the chamber of the magnetic compass as on above diagram?
Acid-free white kerosene
White spirit
Alkaline
Distilled water
Power required to illuminate the lamp for the compass card of the magnetic compass is.
By switched on together with the instrument lighting supplied with 5 V DC
By switched on together with the instrument lighting supplied with 115 V AC
By switched on together with the instrument lighting supplied with 28 V DC
By switched on together with the all lights
What is the Cardinal heading of Magnetic Compass?
2 mains heading ( North & South)
2 main heading ( East & West)
4 mains heading (North, South, East and West)
8 mains heading
What is the purpose of Deviation Card?
Easy for the pilot for airfield heading
To ensure correct bearing to the station
Record the amount of correction required for any heading of the aircraft
Position of the beacon
A spinning mass mounted in such a way that the spin axis is free to rotate can be defined as.
Top spinning
Gyroscope
Gyro-wheel
Which gyroscope has `one degree of freedom'?
Gyroscope having an outer gimbal only
Gyroscope having an inner gimbal only
Gyroscope having an inner and outer gimbal
What is gimbal in the gyroscopic instruments?
Ring or frame where a pendulum is mounted
Ring or frame where rotating mass is mounted
Ring or frame where suspended mass is mounted
The gyroscopic property of a rotating mass to maintain its plane of spin is called.
Flexibility
Rigidity
Precession
What methods are used to drive the rotor of the gyroscopic flight instruments?
Pneumatic and Electrical methods
Friction and Emersion methods
Winding coil and spring methods
What type of gyroscope employed by gyro horizon?
Rate gyroscope
Displacement gyroscope
Horizontal-axis gyroscope
Which instrument is used to display a rate of turn and whether the aircraft slipping or skidding?
Turn and Slip Indicator
Gyro horizon
Directional gyro
The effect that causes the slip indicator or inclinometer to indicate whether the aircraft is skidding or slipping is?
Effect of gravitation and centrifugal forces
Effect of gravitation and motion forces
Effect of pendulum and momentum forces
The pitch and bank attitude of an aircraft relative to the vertical axis is indicated by.
Turn and slip indicator
Gyro horizon
Directional gyro
Engine instrument that are fitted on aircraft varies and depends on.
Requirement from aircraft customers
Engine design
The size, type and number of engines
The 4 classes of engine instruments are.
Pressure, temperature, speed and quality measuring instruments
Pressure, temperature, range and quantity measuring instruments
Pressure, temperature, speed and quantity measuring instruments
What is meant by direct reading method?
Allow gas as the medium to transmit the information via a pipeline to the display device
Allow liquid as the medium being measured to passed directly to the display device
Allow flexi-rotating cable to the display device
Disadvantages of Direct Reading Method are.
No electrical wirings
Long length of pipelines and hazardous fluids
Required pipeline coupling interconnections
Transducer is a device that converts the physical property such as pressure, temperature and speed into.
Mechanical signal
Electrical Signal
Electromagnetic Signal
The device that converts the physical property like pressure, temperature and speed into an electrical signal is known as.
Sensor
Capacitor
Transducer
What type of mechanism used in the Manifold Pressure Gauge?
Diaphragm type
Aneroid capsule type
Bourdon type
The Oil Pressure measurement calibrated in.
PSI, bar or kg/cm2
Newton per meter2 (N/m2), pascal or mm Hg
PSI, N/m2, or kg/cm2
Name the sensing element of an oil temperature measurement system.
Bourdon tube
Oil temperature bulb
Thermocouple
Oil Temperature Bulb is used as the sensing element to measure.
Speed
Temperature
Pressure
Where is the location of Oil Temperature Bulb on the engine?
Located below of the oil sump
Located at the output line of engine pump
Located at the delivery side of the oil pressure pump
What is a Thermocouple?
Used to sense the oil temperature, depending on the engine type and systems
Used to sense the inter-turbine temperature, depending on the engine type and systems
Used to sense the exhaust gas temperature, depending on the engine type and systems
What are the elements of EGT Thermocouple?
Chromel and Alumel
Platinum and Nickel
Copper and Aluminium
Chromel and Alumel are the elements of.
EGT Probe head
EGT Thermocouple
EGT Heating Element
The EGT sensing element on the GTE fitted to the rear flange of the outer ring at the turbine exhaust section is.
Thermo element ring
Thermometer ring
Thermocouple ring
How the permanent magnet rotor is rotates inside the stator of generator employed in speed measurement system?
Driven by DC power supply
Driven by AC power supply
Driven by the engine gearbox
Fuel Quantity Indicating System is calibrated in.
Gallons, pounds or kilograms
Gallons and pounds only
Gallons, pounds, liter or kilograms
What is the type of fuel quantity using transmitter & receiver as a desynn type.
Sensor level system
Float-type system
Capacitance-type system
What is the method that used the float & capacitance type in fuel quantity system?
Direct reading method
Electrical transmitting method
Magnetic field transmitting device
What is the function of the fuel in Capacitance Fuel Quantity Indicating System?
Act as Insulator
Act as Conductor
Act as dielectric
In Capacitance Fuel Quantity Indicating System, Fuel in the aircraft tank act as?
Resistance
Conductor
Dielectric
