I got asked two questions on my checkride:
- Why is it important to lose 1 knot per second (approximately) in a Vmc Demo?
- How do we know we're losing 1 knot per second?
My answer to question 1 would be be: because you are flying with one engine simulated inoperative and creating asymmetrical yaw, if you lose airspeed too fast you might blow past the stall indicator and actually stall the aircraft with a large yawing effect throwing you into a spin. Does that make sense?
For question 2, other than counting 5-10 seconds while losing 5-10 knots of airspeed is there any other way?