GATE AE topic:flight-mechanics PYQs & Answers — Page 29

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Questions 281–290 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 29 of 65

A three-member truss is simply supported at Q and R, and loaded at P by a horizontal force

as shown. The force in QR is

Diagram for Aerospace Engineering question 21

Your answerChoose one option.

(tensile)

(compressive)

(tensile)

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The closed thin-walled rectangular channel shown in figure (i) is opened by introducing a sharp cut at the center of the bottom edge, as shown in figure (ii). Which one of the following statements is correct?

Diagram for Aerospace Engineering question 22

Your answerChoose one option.

Centroids of (i) and (ii) coincide while shear centers do not

Shear centers of (i) and (ii) coincide while centroids do not

Both centroids and shear centers of (i) and (ii) coincide

Neither centroids nor shear centers of (i) and (ii) coincide

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The region of highest static temperature in a rocket engine and the region of highest heat flux are ____________, respectively.

Your answerChoose one option.

nozzle throat and nozzle entry

combustion chamber and nozzle throat

nozzle exit and nozzle throat

nozzle throat and combustion chamber

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are three mutually perpendicular unit vectors, then

can take the value(s)

Your answerSelect all correct options. You can choose more than one.

-1

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Across an oblique shock wave in a calorically perfect gas,

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the stagnation enthalpy changes

the stagnation entropy changes

the stagnation temperature changes

the speed of sound changes

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NACA 2412 airfoil has

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4% maximum camber with respect to chord

maximum camber at 40% chord

12% maximum thickness to chord ratio

maximum camber at 20% chord

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For International Standard Atmosphere (ISA) up to 11 km, which of the following statement(s) is/are true?

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The hydrostatic/ aerostatic equation is used

The temperature lapse rate is taken as

The sea level conditions are taken as: pressure,

; temperature,

; density,

Air is treated as a perfect gas

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Let

and

represent the normal stress and shear stress on a plane, respectively. The Mohr circle(s) that may possibly represent the state of stress at points in a beam of rectangular cross-section under pure bending is/are:

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Diagram for Aerospace Engineering question 28

Diagram for Aerospace Engineering question 28 (figure 2)

Diagram for Aerospace Engineering question 28 (figure 3)

Diagram for Aerospace Engineering question 28 (figure 4)

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An isotropic linear elastic material point under plane strain condition in the x-y plane always obeys:

Your answerSelect all correct options. You can choose more than one.

out-of-plane normal strain,

out-of-plane normal stress,

out-of-plane shear stress,

out-of-plane shear strain,

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A high-pressure-ratio multistage axial compressor encounters an extreme loading mismatch during starting. Which of the following technique(s) can be used to alleviate this problem?

Your answerSelect all correct options. You can choose more than one.

Blade cooling

Variable angle stator vanes

Blow-off valves

Multi-spool shaft

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GATE AE topic:flight-mechanics PYQs

Question 21

Question 22

Question 23

Question 24

Question 25

Question 26

Question 27

Question 28

Question 29

Question 30