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Session 02 of 2020 (Dec)

Module 5

1) 4 bit excess 3 codes

a) 0011
b) 1010
c) 0011
d) 0111
2) Decoder is the opposite of encoder, it does converts
a) Binary to decimal
b) Decimal to binary
c) Decimal to decimal
d) Binary to binary
3) MTICS EMI
a) It cannot be reduced
b) It can be fully reduced
c) It can be reduced by supressing interface at source ( emi should be identifies andzz
Eliminated or at least reduced as much as possible at source)
4) Purpose of bonding & grounding
a) Grounding and bonding can also be instrumental in minimising the effects of high-
Intensity radio frequency fields (HIRF) emanating from high power radio transmitters
And radar equipment
b) Limit the potential difference between different components
c) Dissipate static electricity
d) AOA
5) Flight control and navigation system are flight critical and thus require certification
a) Level A
b) Level B and level C
c) Level C and level D
6) The critical level of software level C
a) Major failure
b) Minor failure
c) No effect
7) By taking 2’s compliment again of the 2’s compliment of the binary number
a) 1’s compliment
b) Original number
c) 2’s compliment
8) Integrates multiple functions that require large quantities of data collection and processing
a) AIMS (airplane information management system)
b) IMA (integrated modular avionics)
c) IRS (inertial reference system)
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9) Arnic 429
a) Unidirectional
b) Bidirectional
c) Nota
10) The conversion process using binary triplet method is
a) Binary to octal conversion
b) Binary to hexadecimal
c) Binary to decimal
d) AoA
11) Most common family of CMOS
a) 4000 series
b) 5000 series
c) 6000 series
d) 7000 series
12) Build-up of static charge causes the particular problem is that
a) It is worse when wet
b) It is invariably lethal
c) It cannot easily be detected
13) Maximum static charge is generated when a person
a) Walking across a Wool or Nylon carpet
b) Removing shrink warp packaging
c) Working at a bench wearing overhaul
d) Sliding a plastic box across a carpet
14) Flipflop are
a) A stable multi vibrator
b) Bistable multi vibrator
c) Mono stable multi vibrator
15) Output of OR GATE is 1 when
a) Both inputs are 0
b) When any one of input is high
c) Both
16) The processor instruction HLT is classed as:
a) a control instruction
b) a data transfer instruction
c) a logical instruction
17) NOR gate is
a) inverted OR gate
b) inverted And Gate
c) bubbled OR Gate
18) LCD are
a) Non-Emissive
b) Emissive
c) Both
19) Light waves in fibre-optic cables are
a) in the infrared spectrum
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 b) in the ultraviolet spectrum
c) in the visible spectrum
20) Level A software
a) Catastrophic failure
b) hazardous failure
c) major failure
d) minor failure
21) Microprocessor is the
a) Study of hardware design
b) Study of software design
c) Both
22) High Resolution colour display make it possible to have aircraft display with a full graphics capability
a) AMLCD
b) LCD
c) CRT
23) Disadvantages of fibre optics
a) industry resistance to the introduction of new technology
b) need for a high degree of precision when fitting cables and connectors
c) concerns about the mechanical strength of fibres and the need to ensure that cable bends have a sufficiently
large radius to minimise losses and the possibility of damage to fibres
d) AOA
24) Memory Lost Application
a) ROM
b) RAM
c) Both
25) Magnetic Tape is a
a) Sequential Access Memory
b) RAM
c) Both
26) The process of Sampling approximating an Anlogue signal to a series of Discrete level is referred to as
a) interfacing
b) Quantization
c) Data Conversion
27) output of XOR gate go high when
a) odd number of input is high
b) even number of input is high
c) odd number of input is low

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 d) even number of input is low
28) Nand Gate is a combination of
a) and+not
b) or + not
c) and + or
29) A 4 bit ADC of input line is 0 to 5 voltage has a quantization step size of
a) 0.3125
b) -3.125
c) 31.25
30) To display status & details on EICAS which switch provides
a) display switch
b) event switch
c) event switch
31) Data Pages and Flight Plan Construction
a) few pages of data can be accessed and displayed
b) Many pages of data can be accessed and displayed, and space docs not permit them all to be shown here
c) Many pages of data can be accessed and displayed
32) AMLCD
a) ACTIVE MATRIX
b) PASSIVE MATRIX
c) BOTH
33) In a bipolar ADC a logic 1 in the MSB position indicates:
a) zero input voltage
b) negative input voltage
c) positive input voltage
34) TTL Family offer lowest power and the fast operation
a) 74S00
b) 74S01
c) 74S02
d) 74LS08-LOW POWER SCHOTTKY
35) The Resolution of DAC depends on
a) a variable slope ramp
b) a variable reference voltage
c) resistors having different values
d) NOTA
36) MTCS (Radio Altimeter)
a) Radio altitude is digitally displayed during an approach, and when the aircraft is between 2500 and 1000 ft
above ground level
b) Radio altitude is digitally displayed during an approach, and when the aircraft is between 2500 and 1000 ft
above sea level
c) Radio altitude is digitally displayed during an approach, and when the aircraft is between above 2500 ft
37) CMOS is less susceptible to
a) Radio Interference
b) electrical interference
c) magnetic Interference
38) A number of integrated circuit devices bridge the gap between the analogue and digital world. Such devices
include
a) DAC
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 b) ADC
c) TIMER
d) AOA
39) ASCII(American Standard Code for Information Interchange) characters are represented by
a) 2bit
b) 3bit
c) 5bit
d) 7bit
40) Inverters are used
a) doesn’t affect the logic circuit
b) compliment the logic state
c) logic 1 input than logic 1 output
41) When Display using Phenomena potentially capable of Producing Light when the Display elements are
Electrically activated
a) Active
b) Passive
c) Neutral
42) Convert A7 into Decimal number
a) 167
b) 127
c) 329
43) If the numerical aperture of a fibre has a value of 1, this indicates that:
a) all of the light from the source is captured by the fibre
b) none of the light from the source is captured by the fibre
c) 50 per cent of the light from the source is captured by the fibre
44) When transporting ESDs it is important to:
a) keep them in a conductive package
b) remove them and place them in metal foil
c) place them in an insulated plastic package
45) ECAM display modes
a) 3 Automatic,1 Manual
b) 2 Automatic ,2 Manual
c) 2 Automatic ,2 Manual
46) ECAM Modes
a) flight phase-related , advisory & failure-related mode and Manual
b) flight phase-related, advisory and Manual
c) flight phase-related , Failure related and Manual
47) Transfer data from the airborne weather radar receiver to the aircraft’s radar display
a) ARINC 708
b) ARINC 573
c) ARINC 579
48) Which is the major device in Micro Computer
a) Disc Capacity

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 b) Monitor
c) Microprocessor
49) Multiplexer of 32x1
a) 16x1 & 2x1
b) two of 16x1 and one of 2x1
c) one of 16x1 and two of 2x1
50) Which one of the following is used to minimise reflections present in a bus cable:
a) coupler panels
b) bus terminators
c) shielded twisted pair cables
51) MTICS in respect of Bonding Grounding Connections are made in an aircraft
a) To dissipate energy from a high intensity radiated field
b) Dissipate static Electricity
c) Limit the Potential Difference Between Equipment
d) Provide a high Resistance path for earth Return
52) Aperiodic EMI occurrence is
a) Continuous Repetitive
b) Periodic but not continuous
c) Totally Unpredictable
d) Randomly
53) Purpose of Secondary Bonding
a) Dissipate Energy From HIRF(high intensity radiated field)
b) Dissipate Static Electricity
c) Limit the Potential difference
d) All
54) ARINC 629 Physical Bus Medium
a) Shielded two wire twisted Pair Cable
b) Co-axial Cable
c) Shield Twisted Pair
55) Generate all Single Character , Special Symbol , Straight & Curved Lines and arc on Display Unit
a) Stroke Generator
b) Character Generator
c) Roaster Generator
56) MTCS (Radio Altimeter
a) Displayed between 2500ft and 1000ft above ground level
b) above 2500ft only
c) as in (a) & below 1000ft the display automatically changes to a white circular scale calibrated in increments of
100ft
57) Which memory is used to Host the Particular Software
a) RAM
b) ROM
c) Monitor
d) Both a and b
58) The Output of a Bistable Circuit has

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 a) 2 Stable States (0,1)
b) 1 Stable State
c) 0 Stable State
59) In EHSI Map Displayed provide two types of Predictive Information
a) Straight Line
b) Curved Track Vector
c) Range to Altitude Arc
d) Both b & c
60) MTCS disadvantage ( fibre Optics)
a) Optical Fibre are Light weight and if small physical size
b) high reliability coupled with high operational life
c) need for a high degree of precision when fitting cables and connectors
d) electrical isolation and freedom from earth/ground loops
61) MTCS (MULTIPLEXER)
a) increase IFE wiring to seat Position
b) Reduced IFE wiring to seat Position
c) Reduce Immunity to Emi
62) MTCS in CRT Combination Red + green
a) Yellow
b) Cyan
c) Magenta
d) Green
63) MTCS(ESD)
a) Used to Heel Straps and work in a Similar Manner to Wrist Strap
b) Static Dissipative Mat and Benches
c) Grounded Test Equipment
d) ALL
64) Effective Protection Against Lighting and Static Discharge damage to an aircraft requires that
a) All Isolated Conducting Parts must have High Resistance to Ground
b) All parts of the metal Structure of Aircraft must be Bonded to Ground
c) All Power and Bus Cable Must be well Insulated
65) MTCS (Clock Generator)
a) it is a Sequence of Pulse
b) All the microprocessor need a Clock to time their function
c) A clock is generated by Clock generator
d) All
66) Potential of the grid at CRT
a) +ve wrt Cathode
b) -ve wrt Cathode
c) -ve wrt anode
67) Each Flight Warning Computer of the system is equipped with……………module which automatically checks data
acquisition and processing modules
a) Monitoring Module
b) Processing Module
c) Control Module
68) Reset Signal is

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 a) input signal
b) output signal
c) re-set signal
d) Reference signal
69) In electric Control System regulator controls
a) Position
b) Speed
c) Transient speed
70) CPU detect problem it will save in
a) Current Position
b) next position
c) previous position
d) current and previous Position
71) Final Anode CRT
a) Permitting Electron Beam
b) Accelerate Of Electron Beam
c) Reduce of Electron Beam
d) Both a & b
72) Non active flight plan map data colour?
a) White
b) Yellow
c) cyan

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 Answers
1) c 2) a 3) b 4) d 5)a 6) a 7) b

8) a 9) a 10) a 11) a 12) c 13) a 14) b

15) b 16) a 17) a 18) a 19) a 20) a 21) c

22) a 23) d 24) b 25) a 26) b 27) a 28) a

29) a 30) a 31) b 32) a 33) b 34) d 35) d

36) a 37) b 38) d 39) d 40) b 41) a 42) a

43) a 44) a 45) a 46) a 47) a 48) c 49) b

50) b 51) d 52) b 53) d 54) c 55) a 56) c

57) d 58) a 59) d 60) c 61) b 62) a 63) d

64) b 65) d 66) b 67) a 68) a 69) b 70) a

71) b 72) c

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