GATE AE format:mcq PYQs & Answers — Page 22

Questions 211–220 of 326. Imported answers require independent review unless marked reviewed.

Topic practice 326 questionsPage 22 of 33

Three long and slender aluminum bars of identical length are subjected to an axial tensile force. These bars have circular, triangular and rectangular cross sections, with same cross sectional area. If they yield at

and

, respectively, which one of the following is true?

Your answerChoose one option.

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The positive high angle-of-attack condition is obtained in a steady pull-out maneuver at the largest permissible angle-of-attack of the wing. Under this condition, at which of the following regions of the wing does the maximum tension occur?

Diagram for Aerospace Engineering question 17

Your answerChoose one option.

III

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The natural frequency of the first mode of a rectangular cross section cantilever aluminum beam is

rad/s. If the material and cross-section remain the same, but the length of the beam is doubled, the first mode frequency will become

Your answerChoose one option.

rad/s

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Given

, the sum of squares of eigenvalues of

Your answerChoose one option.

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The equation

, where

is a constant, represents a family of

Your answerChoose one option.

exponential curves

parabolas

circles

hyperbolas

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A wedge shaped airfoil is placed in a supersonic flow as shown in the figure (not to scale). The corners of the wedge are at

, respectively. Which one of the following represents the correct static pressure profiles along

and

Diagram for Aerospace Engineering question 27

Your answerChoose one option.

Diagram for Aerospace Engineering question 27 (figure 2)

Diagram for Aerospace Engineering question 27 (figure 3)

Diagram for Aerospace Engineering question 27 (figure 4)

Diagram for Aerospace Engineering question 27 (figure 5)

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The value of Poisson’s ratio at which the shear modulus of an isotropic material is equal to the bulk modulus is

Your answerChoose one option.

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A load

is applied to the free end of a stepped cantilever beam as shown in the figure. The Young’s modulus of the material is

, and the moments of inertia of the two sections of length 2 m and 1 m are

and

, respectively. Ignoring transverse shear and stress concentration effects, the deflection at the point where the load is applied at the free end of the cantilever is

Diagram for Aerospace Engineering question 29

Your answerChoose one option.

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The three dimensional strain-stress relation for an isotropic material, written in a general matrix form, is

and

are compliances which depend on the elastic properties of the material. Which one of the following is correct?

Your answerChoose one option.

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For three different airplanes A, B and C, the yawing moment coefficient (

) was measured in a wind-tunnel for three settings of sideslip angle

and tabulated as:

Sideslip angle	Airplane A	Airplane B	Airplane C
deg	-0.030	-0.025	0.040
deg	0	0	0
deg	0.030	0.025	-0.040

Which one of the following statements is true regarding directional static stability of the airplanes A, B and C?

Your answerChoose one option.

All three airplanes A, B and C are stable.

Only airplane C is stable, while both A and B are unstable.

Airplane C is unstable, A and B are stable with A being more stable than B.

Airplane C is unstable, A and B are both stable with A less stable than B.

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GATE AE format:mcq PYQs

Question 16

Question 17

Question 18

Question 19

Question 26

Question 27

Question 28

Question 29

Question 30

Question 31