第四章单元测试
- How many igniter plugs does CFM56-3 engine have? ( )
- The CONT position supplies continuous power to the ignition exciters during ( ).
- Which one is TRUE in the following descriptions about the ignition system of CFM56-3 engine? ( )
- On CFM56-3 engine, high-energy exciter output is ( ).
What are the input of the ignition exciters of the CFM56-3?
A:2
B:5
C:3
D:4
答案:2
A:flight
B:aircraft on the ground
C:engine restart in the flight
D:engine start on the ground
A:Only need one gasket controls the depth the igniter plugs go into the combustion chamber.
B:Do not apply grease to the threads on the ignition lead end of the igniter plug.
C:There is no need to provide cooling air around the ignition leads to decrease temperature
D:The Low-energy exciter output is 1 spark per second, 1 joules per spark.
A:1 sparks per second, 1 joules per spark
B:1 sparks per second, 2 joules per spark
C:2 sparks per second, 2 joules per spark
D:2 sparks per second, 1 joules per spark
A: 14－20KV input. B: 115V AC input. C:230V AC input. D:28V DC.
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