Lift and drag

#11. What will be the effect on drag if humidity is increased if air temperature, pressure and TAS remain constant?

• AIncrease.
• BDecrease.
• CRemain constant.
• DDecrease or increase depending on Mach number.

#33. How does static pressure below a wing at low positive angles of attack compare with the local ambient static pressure?

• AHigher.
• BThe same.
• CLower.
• DHigher or lower depending on speed.

#1. Which of the following statements is most accurate?

• ADl is proportional to 1 /(EAS)2
• BDl is proportional to 1 /(IAS)2
• CDl is proportional to 1 /(RAS)2
• DDl is proportional to 1 /(TAS)2