EASA Part-66 Exam Preparation Online

Peak factor = √2 ≈ 1.414 _________________________________________

ZigmundsAMG asked a question ·4h ago

It's B. Seen it from the jump seat on check flights, fly level at the same indicated speed at 5000 ft and again at 15000 ft and the pitch attitude barely changes, only the true airspeed is a lot higher. Thinner air but the wing moves through it faster, so same dynamic pressure, same AoA for the same lift and same induced drag, and the climb in between comes from extra thrust, not from holding more AoA.

Tomash replied to wan.yc.justin's question ·6h ago

what i dont understand is how is the aircraft increase in altitude without an increase in AoA, hence the increase in induced drag

wan.yc.justin asked a question ·6h ago

Thank you, you are right. The code printed on small resistors, such as 4K7 (4.7 kilohm) or R47 (0.47 ohm), is a letter-and-digit code: the digits give the value, and the letter R, K or M sets the multiplier and takes the place of the decimal point. Calling that option just 'Letter code' was not clear enough, especially next to 'Number code', so we have renamed it to 'BS1852 code', the standard this marking comes from. Thanks for pointing it out, and please keep reporting anything that looks off.

PART66Online replied to ZigmundsAMG's question ·10h ago

So it has both - letter AND number.

ZigmundsAMG asked a question ·11h ago

Because mercury freezes near minus 39 degrees C, at minus 50 it is solid in the bulb and cannot rise, answer is B. Alcohol stays liquid to roughly minus 115 degrees C, so spirit thermometers are the standard choice for very low temperature measurement.

AnyaK replied to ztknpi666's question ·5d ago

what about the mercury why don't explain it

ztknpi666 asked a question ·5d ago

Yeah this one's tricky, the photos label them the same because on most airliners the same upper wing panels do both jobs. Answer is C, a speed brake is deployed to add drag so you slow down or descend steeper, whereas a spoiler's job is to kill the lift the wing is making, which is what those panels do when they go fully up on landing. Think of an umbrella, holding it open into the wind is the speed brake slowing you down, and folding it shut is the spoiler taking away what was holding it up. That's how I'd read it.

Lisa_T replied to wan.yc.justin's question ·5d ago

I fail to understand the different between speed brakes and spoilers. Even if i looked into google the photos basically identifies the spoiler parts as speed brakes as well.

wan.yc.justin asked a question ·6d ago

B. 4 3/8 is mixed number, means 4 + 3/8 and not 4 times 3/8, so 35/8 - 9/4 + 1/5 = 175/40 - 90/40 + 8/40 = 93/40 = 2 13/40.

Marek_AME replied to erik.daros.mac's question ·10d ago