5 questions would be shown from a total of 30 free practice questions to prepare you for the cadet pilot interview. Enjoy!
1 / 5
1. The narrow region where stall speed and high speed buffet meet is referred to as ________.
Coffin corner occurs from the interaction between stall speed and critical mach speed, which are both caused by pressure over your wing.
2 / 5
2. How much does 100 low lead fuel weigh per gallon (at ISA)?
According to the FAA, 100LL weighs 6 pounds per gallon. Actually, it’s 6.01 pounds at 15 degrees C, if you want to be exact.
3 / 5
3. The speed of sound in the troposphere ________ with altitude, mostly due to __________.
The speed of sound in the troposphere decreases with altitude, mostly due to a decrease in temperature. Humidity has very little effect on the speed of sound, nor does air pressure by itself.
4 / 5
4. Prist (fuel system icing inhibitor) is made of __________.
To be specific, it’s actually Diethylene Glycol Monomethyl Ether, or DEGMME. And when it’s added to fuel, any water that is in the fuel is prevented from crystalizing down to temps as cold as -85 degrees Celsius. That’s cold.
5 / 5
5. Why does avgas have lead in it?
It’s still used because it prevents engine knocking, also known as detonation.
Your score is
The average score is 45%
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