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Module:     Show:
Module 14. Propulsion
What is the pressure increase over one stage of a centrifugal compressor?
•  5:1
•  1.2:1
•  8:1

Crystal asking:
•  I think the answer is 8:1 because Jeppesen Gas Turbine Powerplant quotes the latest modern centrifugal compressor as having a pressure ratio of 10:1

Community comments: 0
Module 3. Electrical fundamentals
An autotransformer is
•  primary and secondary coils.
•  primary coil only.
•  primary and secondary coils on single bar.

AHMEDALSHAIN asking:
•  Why

Community comments: 0
Module 10. Aviation legislation
Mandatory markings for flight instruments, or placards are annotated in the
•  Aircraft Maintenance Schedule.
•  Flight manual or Certificate of Airworthiness.
•  Aircraft Maintenance Manual.

marcoff asking:
•   Are in maintenance manual ATA 11 "PLACARDS AND MARKINGS", or not?

Community comments: 0
Module 10. Aviation legislation
When is a Noise Certificate required to be carried aboard the aircraft?
•  At all times.
•  When flying in UK airspace only.
•  When flying in UK or any EU member state airspace.

marcoff asking:
•  Why not at all times?

Community comments: 0
Module 3. Electrical fundamentals
A transformer should always have its
•  primary shorted or off load.
•  secondary shorted or on load.
•  secondary open circuit or on load.

chandra.shrestha1988 asking:
•  Shouldn't it be secondary shorted or on load?

Community comments: 1
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