DGCA Module 05
1st Session of 2026
1. Basic instrument in T arrangement.
A) One
B) Two
C) Three
D) Four
Answer
2. In modern aircraft ECAM warning.
A) Level 1
B) Level 2
C) Level 3
Answer
3. The typical noise margin of TTL 7400 series logic family is.
A) 400 mV
B) 300 mV
C) 1000 mV
Answer
4. In which type of logic gate does the output remain the same as the input signal.
A) NOT
B) NAND
C) Buffer
Answer
5. Advantage of AMLCD over CRT.
A) Weight
B) Power
C) Reliability
D) All
Answer
6. OP code in computer system.
A) Set of instruction
B) BCD
C) Binary code of instruction
D) Decimal code
Answer
7. The standard resistance value of a wrist strap used for electrostatic discharge (ESD) protection is.
A) 1 mega ohm
B) 2 mega ohm
C) 3 mega ohm
Answer
8. The process of sampling approximation an analog signal to a series of discrete levels is.
A) Sampling
B) Encoding
C) Quantization
Answer
9. Real time, critical monitoring, module/sub function, go/no go alarm function.
A) ECAM
B) BITE
C) ACARS
Answer
10. For accurately aligning connector of optical fibre connector has.
A) Each connector has key over plug
B) Each receptacle has matching alignment groove
C) Both are correct
Answer
11. Conversion time of flash ADC range.
A) 50 ns to 1 micro second
B) 50 ns to 1 nm
C) Only 50 ns
Answer
12. Software development tools such as MATLAB certified under.
A) DO-178C
B) DO-168
C) DO-170
Answer
13. MTCS – ARINC 573.
A) ARINC 573 is the standard adopted for use with weather radar
B) ARINC 573 is the standard adopted for use with flight data recorders
C) As in (a) and which contains data stream of 12 bit word
D) As in (b) and which contains data stream of 12 bit word
Answer
14. GPS provides the following information.
A) Only system time
B) Only position data
C) Position data, velocity and system time
Answer
15. ACARS stands for.
A) Automatic communication and relay system
B) ARINC addressing and reporting system
C) Aircraft Communication Addressing and Reporting System
Answer
16. Electromagnetic interference (EMI) is caused due to which of the following sources.
A) Fluorescent light
B) Radio equipment and transmitters
C) Static discharge
D) All of the above
Answer
17. In the term FADD used in computer architecture, the letter “F” stands for.
A) Floppy
B) Fixed
C) Floating
Answer
18. The 32-bit format refers to which of the following data sizes.
A) 8 bits
B) 32 bits
C) 64 bits
Answer
19. Which of the following are considered optical components in communication systems.
A) Coupler
B) Switches
C) Router
D) All of the above
Answer
20. The T-Arrangement contains.
A) VSI, Turn coordinator and compass
B) ASI, Attitude Indicator, Altimeter, Heading Indicator
C) Magneto, FAADEC, Speed Indicator and Fuel Indicator
Answer
21. With reference ROM is a type of memory.
A) Volatile
B) Non-volatile
C) Both
Answer
22. EFIS consist of.
A) PFD and ND
B) VSI and ASI
C) Both
Answer
23. ARINC 20 can connect ___ no. of receiver.
A) 20
B) 120
C) 180
Answer
24. Synchronous sequential logic circuit are built to operate.
A) Clocking
B) Without clocking
C) Not required
Answer
25. Octal number system consists of which digits.
A) 10
B) 8
C) 0–7
Answer
26. A GPS system using 3 satellites can determine which parameters.
A) Latitude only
B) Latitude and Altitude
C) Latitude and Longitude
Answer
27. An inverter gate in digital electronics is also known as.
A) NOT gate
B) AND gate
C) NAND gate
Answer
28. Fibre optics communication system is characterized by.
A) Low bandwidth and slow data transmission
B) Exceptionally wide bandwidth and very high data transmission speed
C) Both (A) and (B) are correct
Answer
29. To prevent damage to ESDS component when shipping.
A) Conductive packaging
B) Non-conductive packaging
C) Anti-static packaging materials
Answer
30. To prevent ESD transfer.
A) EMI cable should be shielded
B) EMI cable should be Unshielded
C) EMI cable should be Twisted
Answer
31. CRT (Cathode Ray Tube) display works on which principle.
A) The combination of three primary colours can produce many colours depending on pixel intensity
B) Uses only three fixed colours for display
C) Produces only black and white images
Answer
32. HIRF/HERF is generated from which source.
A) Internal radio frequency sources within the aircraft
B) External radio frequency sources such as radar and transmitters
C) Both internal and external sources
Answer
33. Software testing includes which of the following conditions.
A) Simulation of out-of-range input conditions
B) Testing system behavior in case of power failure
C) Both (A) and (B) are correct
Answer
34. Technician should only enter work area.
A) Conductive footwear
B) Non-conductive footwear
C) Wear anti-static (steel-mesh) smocks and conductive (leather-soled) footwear
Answer
35. In a DAC, 256 levels will produce.
A) 8
B) 64
C) 128
D) 256
Answer
36. Provide eight bits of binary data conversion.
A) Nibble
B) BITE
C) BYTE
Answer
37. Optical fibre communication system has which of the following advantages.
A) Reliable in operation
B) Robust against interference and environmental conditions
C) Less weight compared to conventional cables
D) All of the above
Answer
38. MEMS technology is based on which type of system.
A) Analog system
B) Solid state technology
C) Semi-analog system
Answer
39. Fly-By-Wire flight control system is best described as which of the following.
A) Hydromechanical system assisted with electrical control signals
B) Electromechanical control system only
C) Fully electrical signal-based control system replacing mechanical linkage
Answer
40. A circuit has a resistance of 20 ohms and current of 3 amperes is flowing through it. Calculate the voltage across the resistor.
A) 40 V
B) 50 V
C) 60 V
D) 80 V
Answer
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