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