![The pitching moment of a positively cambered NACA airfoil about its leading edge at zero- lift angle of attack is](https://www.gkseries.com/blog/wp-content/uploads/2023/09/The-pitching-moment-of-a-positively-cambered-NACA-airfoil-about-its-leading-edge-at-zero-lift-angle-of-attack-is.jpg)
Q. The pitching moment of a positively cambered NACA airfoil about its leading edge at zero- lift angle of attack is
(A) negative.
(B) positive.
(C) indeterminate.
(D) zero.
Ans: negative
Q. The pitching moment of a positively cambered NACA airfoil about its leading edge at zero- lift angle of attack is
(A) negative.
(B) positive.
(C) indeterminate.
(D) zero.
Ans: negative
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