Q&A Forum
1106 questions found
When the rotor blade increases its angle of attack, the centre of pressure
- does not move.
- moves rearwards.
- moves forward.
Centre of pressure moves forward when AOA is increased?
A diode connected across a coil will
- prevent the coil being fitted the wrong way.
- prevent back EMF and allow faster switching.
- suppress arcing when relay is opening and closing.
I think "prevent back EMF and allow faster switching" is the correct answer
A battery in situ on an aircraft
- charges at a fairly constant rate because generator voltage remains constant.
- may charged at an excessive rate if initial battery voltage is low.
- may charge slowly if initial battery voltage is low.
What is meant by "situ"?
American made crew oxygen cylinders are
- green in colour with a LH thread.
- green in colour with a RH thread.
- black in colour with a RH thread.
Charging connection has left hand threads, this question needs clarification.
Operation with the engine at maximum boost should be limited to
- prop at fine to prevent overstressing the engine.
- prop at course to prevent overstressing the engine.
- prop at windmill to prevent overstressing the engine.
While the question and answer is not wrong, the wording seems ambigious. "Maximum boost" is not a very technical term, and a simple (overspeed) clarification behind overstressing would be good. When i read this question i think that maximum boost means maximum power, and with the propeller at coarse you would be extracting more power from the engine therefore possibly "overstressing" it. I offcourse understand the answer they are looking for is coursing off the blade to not overspeed the engine and prop at high power. Am i missing something?