Avionics MCQs with Online Practice Quizzes
Avionics MCQs are a great way to test and evaluate your knowledge in the field of avionics. They are designed to assess the fundamentals of the subject and provide a great starting point for anyone looking to further their studies. These questions cover a wide range of topics, including aircraft systems, navigation, and communication.
These Multiple Choice Questions are an invaluable resource for reinforcing key concepts. Avionics MCQs have become an integral part of the initial tests for the Pakistan Army, helping to accurately determine the suitability of applicants for technical roles.
If you are interested in joining Pak Army jobs, you must read these questions. They are compiled from total past papers and the first-hand experience of candidates who appeared in the Short Service Commission (SSC) and Technical Graduate Course (TGC).
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Avionics MCQs: Test Your Knowledge
Past Papers of Avionics Multiple Choice Questions (Part-01)
Which of the following is not one of the functions performed by the FMS?
a) Automatic navigation and guidance including ‘4D’ navigation
b) Management of aircraft systems
c) Efficient management of fuel
d) Housekeeping management
Answer: d
What does the outer loop of an autopilot do?
a) Generate commands to the inner flight control loop
b) Access the flight control surfaces to control the pitch and roll of the aircraft
c) Access the flight control surfaces to control the altitude and heading of the aircraft
d) Generate commands for the pilot to follow
Answer: a
Which of the following is the fundamental control of a common autopilot mode?
a) Altitude control
b) Pitch, roll and yaw control
c) Engine control
d) Automated landing
Answer: b
An altitude control loop does not depend on _______
a) Aircraft pitch angle
b) Angle of attack
c) Forward velocity
d) Density of air
Answer: d
What is the reason for choosing height error gain in such a way that the frequency of height loop is below the bandwidth of the pitch attitude loop?
a) Efficient flight
b) Better Range
c) Stable and damped response
d) Better climb rate
Answer: c
What is in for a heading control system?
a) Rate of change of heading
b) Bank angle
c) Side slip angle
d) Required rudder deflection
Answer: a
Avionics MCQs: Quiz for Beginners
Past Papers of Avionics Multiple Choice Questions (Part-02)
What is ILS?
a) Instrument landing system
b) Indian Levitation System
c) Indian Landing system
d) International Levitation system
Answer: a
Which one of the following can provide a reliable and accurate approach path guidance in category II visibility conditions?
a) ILS
b) MLS
c) SBAS
d) VHF
Answer: c
What are the two main components of an ILS on the ground?
a) Horizontal alignment transmitter and vertical alignment transmitter
b) Localizer transmitter and glide slope transmitter
c) Center line transmitter and glide slope transmitter
d) Center line transmitter and approach slope transmitter
Answer: b
What is the frequency used by the localizer transmitter?
a) VHF
b) UHF
c) MF
d) LF
Answer: a
What is the frequency used by the glide slope transmitter?
a) VHF
b) UHF
c) MF
d) LF
Answer: b
The use of autopilot for landing using ILS does not depend on _______
a) Visibility category
b) ILS ground installation standard
c) Runway lighting installation
d) Weight of the aircraft
Answer: d
Under what category does zero visibility conditions come?
a) Category I
b) Category II
c) Category III
d) Category IV
Answer: c
What is DH?
a) Distance Height
b) Direct Height
c) Decision Height
d) Direction height
Answer: c
What is the frequency of marker beacon transmission?
a) 100 MHz
b) 75 MHz
c) 1 GHz
d) 1000 MHz
Answer: b
MLS has a wide selection of channels to avoid interference with nearby airports
a) True
b) False
Answer: a
At what height is the auto flare initiated?
a) 100 ft
b) 50 ft
c) 25 ft
d) 10 f
Answer: b
What type of controller is used in an auto flare control?
a) Proportional plus derivative
b) Proportional plus integral
c) Proportional plus integral plus derivative
d) Proportional only
Answer: b
What is the velocity at the start of flare maneuver if the approach speed is 130 knots?
a) 2.91 m/s
b) 3 m/s
c) 3.56 m/s
d) 10 m/s
Answer: a
Avionics MCQs: Assess Your Skills
Past Papers of Avionics Multiple Choice Questions (Part-03)
What is the position accuracy that can be achieved by satellite guidance systems?
a) 10 m
b) 5 m
c) 0.5 m
d) 1 m
Answer: d
What is the beam error in localizer for aircraft CG displacement of 5m at a range of 1,500m?
a) 0.0033 RAD
b) 3.3 RAD
c) 0 RAD
d) 5 RAD
Answer: a
The guidance sensitivity decreases as the range decreases
a) True
b) False
Answer: b
When does an ILS localizer coupling loop become unstable?
a) Aircraft range is infinity
b) Aircraft range is close to zero
c) When too many aircraft are present
d) When no aircraft is present
Answer: b
What is missing in the localizer coupling loop?
a) Flight computer
b) ILS Localizer receiver
c) ILS glide path receiver
d) ILS Localizer transmitter
Answer: b
Which one of the following is not a basic parameter used to define visibility category?
a) Decision height
b) Minimum vertical visibility
c) Runway length
d) Runway visual range
Answer: c
Which of the following is not one of the operational limits and autopilot requirement for a category IIIc visibility condition?
a) Runway guidance required to taxi point
b) Fully automatic landing system with flare
c) Probability of catastrophic failure of less than 10−7 per hour required
d) Decision height of 5m
Answer: d
How is altitude measured when the aircraft is about to land?
a) Pitot static port
b) Pitot stagnation port
c) Radio altimeters
d) Inertial navigation systems
Answer: c
Why is flare maneuver executed during landing phase?
a) To align with the runway
b) To reduce airspeed and rate of descent
c) To stabilize the aircraft during crosswinds
d) To conserve fuel
Answer: b
Why is the kick off drift maneuver executed?
a) To align with the runway
b) To reduce airspeed and rate of descent
c) To stabilize the aircraft during crosswinds
d) To conserve fuel
Answer: a
What is HREF in the control law used for auto flare?
a) Height when flare is initiated
b) Height where flare should be initiated
c) Maximum height where flare can be initiated
d) Small negative height
Answer: d
What controls the efficient functioning of an engine?
a) Autopilot
b) FMS
c) FBW
d) FADEC
Answer: d
The response of a jet engine thrust to the throttle angle is instantaneous.
a) True
b) False
Answer: b
Q.Which one of the following is not a function of the FMS?
a) Flight guidance and control of flight path
b) Monitor and regulate speed of the aircraft
c) Automatically switch between different types of communication
d) Automatic control of engine thrust
Answer: c
Avionics MCQs: Study Guide
Past Papers of Avionics Multiple Choice Questions (Part-04)
The number of independent FMS in a typical commercial aircraft is?
a) 1
b) 2
c) 5
d) 7
Answer: b
Which of the following is not a way cockpit-flight crew interfaces in the FMS?
a) Primary Flight Display
b) Multi Function Display
c) Keyboard and Cursor Control Unit
d) Target Detection and Locking System
Answer: d
What type of cockpit flight crew interface is used to enter or modify the data on the MFD?
a) Keyboard and Cursor Control Unit
b) Control stick
c) Control Switches
d) Control levers
Answer: a
What control does the EFIS Control Panel provide?
a) Control over graphical and textual FMS data
b) Control over flight plan
c) Control over flight performance
d) Navigation through FMS pages
Answer: a
What is the number of Flight Management Computers used in a typical commercial aircraft?
a) 2
b) 1
c) 4
d) 3
Answer: d
Q.Which operating mode of the FMS does the figure show?
a) Double mode
b) Independent mode
c) Single mode
d) Redundancy mode
Answer: b
Both FMS 1 & 2 get information from only one FMC in the case of ______
a) Independent mode
b) Loss of one FMC
c) Single mode
d) Double mode
Answer: c
The standby FMC performs calculations even when both the FMC are fully functional.
a) True
b) False
Answer: b
What filter is used by the FMS to estimate the position of the aircraft from various sensors?
a) Kalman filter
b) Position error filter
c) GPS filter
d) Gyro and accelerometer filter
Answer: a
Avionics MCQs: Practice Questions
Past Papers of Avionics Multiple Choice Questions (Part-05)
Which one of the following is not a navigation mode used by FMS for computing position of the aircraft?
a) Inertial (IRS) – GPS
b) Inertial (IRS) – DME/DME
c) Inertial (IRS) – VOR/DME
d) GPS only
Answer: d
Navigational functions are no longer available if the INS shuts down in an FMS.
a) True
b) False
Answer: a
What is the interval for updating data in the navigation database?
a) 1 hour
b) 1 month
c) 24 hours
d) 28 days
Answer: d
Which one of the following is not a factor for calculating speed breaches by the FMS?
a) Aircraft weight
b) CG position
c) Wind and temperature models
d) Position of the aircraft
Answer: d
Which of the following is false with respect to AIRNIC?
a) Define system and equipment specification
b) Non-profit organization
c) Run by civil airlines with industry and establishment representation
d) Used only in America
What is the fastest mode of data communication between components in aircraft?
a) Coaxial cable
b) Twisted pair cable
c) Fiber optic cable
d) Radio communication
Answer: c
In an aircraft, serial data transfer is achieved by _________
a) Time division Multiplexing
b) Code Division Multiplexing
c) Frequency Division Multiplexing
d) Pulse Modulation
Answer: a
What type of avionic architecture consist of a number of an interconnected but functionally independent subsystem with some degree of central computer of overall operating modes.
a) IMA architecture
b) Federated architecture
c) Disjoint architecture
d) Distributed architecture
Answer: b
How are Data bus in avionics architecture broadly divided into?
a) High speed and low speed data bus
b) AIRNIC and MIL standard data bus
c) Electrical and Optical data bus
d) Main and interconnecting data bus
Answer: c
The type of Ethernet data bus adapted for airborne applications is _______
a) Airborne Simplex Ethernet
b) Airborne Duplex Ethernet
c) Multiplexed Ethernet
d) Avionics Full Duplex Switched Ethernet
Answer: d
What type of cable does MIL STD 1553 use?
a) Coaxial cable
b) Single twisted pair cable with shielding
c) Single twisted pair cable without shielding
d) Fiber optic cable
Answer: b
What property does data transmission in fiber optic cable exploit?
a) Refraction
b) Total internal reflection
c) Diffraction
d) Dispersion
Answer: b
Which one of the following is the major difference between single mode and multi mode fibers?
a) Core material
b) Cladding material
c) Core diameter
d) Cladding diameter
Answer: c
Answer: a
If you want to prepare for Army, Navy, and PAF initial tests online then check the following resources for complete preparation of Pakistan Military forces exams. Our portal provides all past papers and PDFs for free, covering specialized Army Test Preparation, Navy Test Preparation, and PAF Test Preparation materials designed for success in 2026.
