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Avionics
Avionics Basic
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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
a) Lane
b) Flight control computer
c) Monitor
d) Error compensator
Q.7
What type of system does the figure represent?
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?
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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