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The downwash along the wing in the downward direction in Prandtl’s lifting line theory comes from______

Correct Answer: Trailing vortices
The bound vortex does not induce any velocity along itself. The downwash along the bound vortex (wing) comes from the two trailing vortices. Thus, horseshoe is also an incorrect option.

The infinite downwash at the wing tips for a single horseshoe vortex in Prandtls lifting line theory was a wrong result. Which of the following does not relate to the correction made?

According to the reasoning given by Prandtl for his lifting line theory, finite wing is like a ________

Is prandtl lifting line theory predicts lift distribution over a three dimensional wing?

Is prandtl lifting line theory is a mathematical model that predicts lift distribution over a three-dimensional wing?

An aircraft wing is experiencing AOA of 5°. If downwash due to wing is 2.6° then, how much angle is being seen by tail of the aircraft?

In a differential band brake as shown in the below figure, if the length OB is greater than OA, then the force P at C should act in the downward direction.
Theory of Machine mcq question image

The conceptual framework of labour welfare is contained in various theories of labour welfare. In the names of the theories given below, pick the wrong ones
1. The Trusteeship Theory
2. The Placating Theory
3. The Need Theory
4. The Friendship Theory
5. The Public Relations Theory
6. The Functional Theory

Which of the following statements are true/false?
1. Trusteeship theory is also known as paternalistic theory.
2. The Philanthropic theory is based on the fact that man is a religious being.
3. The Functional theory is also known as efficiency theory.
4. Efficiency theory assumes that big business houses have the social responsibility and moral obligations of providing good working conditions.

An aircraft with elliptic wing planform has parasite drag coefficient as 0.6. Lift coefficient of wing is 0.25 and aspect ratio is 7.5. If induced drag co-efficient is 0.0235 then, find total drag coefficient for the wing.

An aircraft with elliptic wing planform has parasite drag coefficient as 0.9. Lift coefficient of wing is 1.8 and aspect ratio is 8.5. Find total drag coefficient for the wing.