Module 5 (B2) Module 5 (B2) quiz contains 72 question based on the syllabus for module 5 examination for B2 category. The time limit for the quiz is 90 min. The number of attempts allowed are unlimited. All the best. Name 1. A two-input NAND gate will produce a logic 0 output when: either one of the inputs is at logic 0 both of the inputs are at logic 1 both of the inputs are at logic 0 None 2. IRS Laser Ring Gyros provide: displacement about an axis rate movement about an axis both rate and displacement about an axis None 3. Digital Computer Processes information in a : Analog fashion. Binary State. Unique Application. None 4. The computer, which perform several different task, depending on operator inputs, is known as. Interactive computer. Controlling computer. Reference computer. None 5. A byte of data is to be inverted. This task is performed by: the instruction register the instruction decoder the ALU None 6. The binary coded decimal number 10011000 expressed as a decimal number is: 152 10 98 b10 152 2 None 7. An AND gate output is 1 when inputs are: both 1 1 and 0 both 0 None 8. A symbol generator displays ESDs warning. During replacement: make sure the pins are not touched and covers fitted you must earth the unit to the airframe structure you must wear a wrist strap connected to an approved earth point None 9. The Aircraft control surface is driven by: Digital signal. Analog signal. Discrete Signal. None 10. This truth table is for a: OR gate AND gate NAND gate None 11. A fiber optic data bus used on an aircraft: can transmit on several channels at the same time connects non-essential systems only can send only one message at a time None 12. The parity bit in digital information is used: to check the validity of data information to check the status of the system for BITE programs None 13. Noise generated by a switching circuit is worse when: switching is fast and current is low switching is fast and current is high switching is slow and current is high None 14. The logical gates are made-up of electronic components, and output can be presented by: Newton‟s law. Boolean Algebra. Bernoulli law. None 15. The effects of HIRF an be reduced by: screening, bonding and filtering. screening only screening and filtering None 16. Convert 0111012 to octal : 25 35 33 None 17. A bus that supports the transfer of data in both directions is referred to as: bidirectional asynchronous universal None 18. The equivalent circuit for an AND gate is: Series circuits. Parallel circuits. Combination circuits. None 19. Which logic gate can be represented as a parallel circuit? OR Exclusive OR NAND None 20. Production tests are performed on an integrated circuit wafer: only when the hips are finally mounted before cutting it into individual hips after cutting it into individual hips None 21. What systems does the ADC feed? Cabin pressure controller sensor / mach meter / Altimeter Altimeter / FMS / secondary radar Standby altimeter/mach meter None 22. In a successive approximation ADC, the time interval between the SC and EOC signals is: the cycle time the conversion time the clock time None 23. What are the outputs of a Digital ADC: TAS, MACH and Altitude TAS, MACH, Altitude, TAT and SAT TAS, MACH, Altitude and TAT None 24. The left and right cockpit displays: are supplied from the same symbol generator will only be supplied from the same symbol generator when all Other symbol generators have failed. are supplied from separate symbol generators at all times None 25. Physical variables in quantitative forms, such as voltage or angular rotation of a shaft are: binary digital analogue None 26. When compared with CRT displays, AMLC displays have: smaller volume and greater reliability larger volume and lower reliability larger volume and greater reliability None 27. An aircraft may have been HIRF affected: A static wick check is required A bonding load check is required Test all radio frequencies for interference None 28. The Boolean expression is A.B=S, what is the name of relative gate? Exclusive or gate. AND gate. Inverter. None 29. Convert 2C hex to octal: 35 44 54 None 30. The ARINC activity is: To produce specifications and reports. To supply electronics parts. To train in avionics field. None 31. Centralized Aircraft Monitoring System: performs in-flight and ground tests of aircraft systems by carrying out a BITE interrogation performs in-flight BITE interrogation only give red warnings and amber cautions to display system status None 32. The decimal number 37 is equivalent to the binary coded decimal (BCD) number: 00110111 00101111 00100101 None 33. A semiconductor memory consists of 256 rows and 256 columns. The capacity of this memory will be: 512 bits 64K bits 256 bits None 34. The flight director system receives information: from both of the above. only from the attitude gyro and altimeter only from the VO /localizer None 35. Another way to describe the CPU register that act as an instruction pointer is : the stack pointer the program counter the instruction register None 36. To shield a fiber optic from EMI you must: shield it with a braided shield earth both transducer and couplings use an opto-isolator None 37. The patterns required to display alphanumeric character in a CRT controller are stored in: character generator ROM static RAM dynamic RAM None 38. Convert 1D to binary: 29 11101 101001 None 39. A four to one multiplexer has: four select inputs one select input Two select inputs None 40. What are the elements of an optical fiber? All above answer are correct. Outer cladding with lower refracting index. Central core of suitable glass material. None 41. For identifying the ESD sensitive area or equipments, that contain ESDS device: A yellow caution sensitive label uses. A green label can be used. A red caution label uses. None 42. The accepted error from INS/IRS is: 3 miles / hour + 3 miles 2 miles per hour + 3 miles 1 mile/hour + 3 miles None 43. Which one of the following integrated circuit packaging technologies requires that the chip should always be soldered in place? PGA DIL SOIC None 44. The stack is a structure located: in external read/ rite memory in the general purpose register in the ALU None 45. A major advantage of EFIS is a reduction in: moving parts present in the flight deck. effects of EMI wiring and cabling None 46. What must be entered into the IRS before the aircraft can be moved? Flight plan Present position Cruise height None 47. Making an invertors from a NAND or NOR gate is achieved by: connecting two in series connecting the inputs inverting the input None 48. What type of memory uses the principle of charge storage? bipolar static RAM MOS static memory MOS dynamic memory None 49. In order to represent negative data values, BNR data uses: two's complement binary an extra parity bit to indicate the sign BCD data and a binary sign bit None 50. To reduce the risk of damaging an ESD during soldering it is important to: use only a mains operated soldering iron use only a low-temperature soldering iron use only a low- voltage soldering iron None 51. The E.M.I. stands for: Electromagnetic Interference. Electromagnetic indicator. Electromagnetic Image. None 52. The hexadecimal number AD is equivalent to the binary number: 10101101 10001101. 11011010 None 53. FMS operational program is updated every: 90 days 7 days 28 days None 54. In a multi-core fiber optic cable: the cladding is color coded the buffer are color coded the core are color coded None 55. The binary number 11010111 expressed as a decimal is: 207 215 223 None 56. Additional enable inputs and outputs are provided in some encoders in order to permit : cascading inverting error detection None 57. Each individual integrated circuit produced from a wafer is known as a: blank die gate None 58. The maximum bit rate supported b ARINC 429 is: 12.5 Kbps 1 Mbps. 100 Kbps None 59. What Logic Gate does this switch circuit indicate? NOR gate AND gate OR gate None 60. The FMS can update the IRS position outputs by using information from either: VOR and DME only DME and GPS only GPS, DME, LOC and VOR None 61. Convert the hexadecimal number D into decimal: 15 14 13 None 62. The conversion time of a flash ADC is typically in the range: 50 ms to 1 s. 50 µs to 1 ms 50 ns to 1 µs None 63. The main advantage of using a serial bus in an aircraft is: it supports the highest possible data rates there is no need for data conversion reduction in the size and weight of cabling None 64. The M.P.U. stands for: Microprocessor unit. Maintenance Power Unit Micro computer unit. None 65. For adaptation of a computer on several different airframes: Potentiometer is used. Program must be changed. Strapping Pins should be used. None 66. An advantage of a dual-ramp ADC is: the ability to operate wit out the need for a clock an inherent ability to reject noise a fast conversion time None 67. Digital computers use input, which are …….. ……….. or ……. And … Analog signal --- Peak – Peak. Digital signal --- High – Low. Hybrid signal --- High – Low. None 68. The standard for ACARS is defined in: ARINC 573 ARINC 429 ARINC 724 None 69. Very Large Scale Integrated (VLSI) means the number of gates in a single IC is: over 10,000 up to 10,000 up to 1000 None 70. A bus that supports the transfer of data in both directions is referred to as: bidirectional universal asynchronous None 71. When will a NAND gate give logic 0 at the output? When the inputs are different When both inputs are at 1 When both inputs are at 0 None 72. An Inertial Navigation System (INS/IRS) computes distance from acceleration by: two successive integrations a differentiation followed by an integration a simple integration None 1 out of 1
