high lift devices

#11. When flaps are lowered the spanwise flow on the upper surface of the wing:

• Adoes not change
• Bincrease towards the tip
• Cincreases towards the root
• Dincreases in speed but has no change of direction

#12. If a landing is to made without flaps the landing speed must be:

• Areduced
• Bincreased
• Cthe same as for a landing with flaps
• Dthe same as for a landing with flaps but with a steeper approach

#1. With the flaps lowered, the stalling speed will:

• Aincrease
• Bdecrease
• Cincrease, but occur at a higher angle of attack
• Dremain the same