Q.1
What is the failure probability figure of a commercial aircraft?
  • a) 1×10-4/hr
  • b) 1×10-6/hr
  • c) 1×10-11/hr
  • d) 1×10-20/hr
Q.2
What is MTBF?
  • a) Mean Time Before Fracture
  • b) Minimum Time Between Failures
  • c) Maximum Time Between Failures
  • d) Mean Time Between Failures
Q.3
What is called a quadruplex system?
  • a) System with 4 channels
  • b) System with 8 channels
  • c) System which does not fail
  • d) System with 4 times the speed
Q.4
In a quadruplex system, when does a passive fail situation occur?
  • a) When all the channels fail
  • b) When 3 channels fail and none is disconnected
  • c) When 2 channels fail none is disconnected
  • d) When 1 channel fail none is disconnected
Q.5
Which of the following uses a monitoring system to check the function of channels?
  • a) Matching triplex
  • b) Monitored triplex
  • c) Master triplex
  • d) Major triplex
Q.6
Complete the signal flow diagram for a monitored system
Questionavionics-questions-answers6.jpg
  • a) Lane
  • b) Flight control computer
  • c) Monitor
  • d) Error compensator
Q.7
What type of system does the figure represent?
Questionavionics-questions-answers7.jpg
  • a) Monitored system
  • b) Duplex system
  • c) Monitored duplex system
  • d) Monitored diplex system
Q.8
How is failure detected in a quadruplex system?
  • a) Cross comparing signals and voting
  • b) Monitoring signals
  • c) Adding signals
  • d) Subtracting signals
Q.9
What are CCCCin the following diagram of the quadruplex system?
Questionavionics-questions-answers9.jpg
  • c) Monitor
  • d) Blank box
  • a) Computer
  • b) Power control unit
Q.10
Which of the following is not a common mode failure?
  • a) Lightning strike
  • b) Fire/explosion/battle damage
  • c) Bird strike
  • d) Incorrect maintenance
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