that trick questions DO NOT belong on the PPL,
CPL or (gasp) IFR written tests.
Here is an example of a good written test question,
that measures PPL-level aviation knowledge:
In a traditional light single engine trainer aircraft equipped
with a vacuum pump, what instruments could you expect
to malfunction after a complete electrical system failure?
1) airspeed indicator
3) attitude indicator and heading indicator
4) gas gauges and turn co-ordinator
And here's a terrible question:
See the difference? A PPL should know the answer toAn eighteen wheel truck and trailer is driving down
Highway 401 at 113 kph. It is filled with twenty thousand
chickens, all of whom suddenly (and at the same time) jump
up into the air and flap their wings before landing again 2.36
seconds later. How will the weight of the entire truck &
trailer be affected?
1) not at all
3) heavier, then lighter, then heavier again
4) lighter, then heavier, then lighter again
#1 - basic systems knowledge. He does not need to
ever know (or care) about #2.