GATE AE kind:question PYQs & Answers — Page 42

Questions 411–420 of 650. Imported answers require independent review unless marked reviewed.

Topic practice 650 questionsPage 42 of 65

For hyperbolic trajectory of a satellite of mass

having velocity

at a distance

from the center of earth (

: gravitational constant,

: mass of earth), which one of the following relations is true?

Your answerChoose one option.

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For conventional airplanes, which one of the following is true regarding roll control derivative

and yaw control derivative

, where

is rudder deflection?

Your answerChoose one option.

and

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The ratio of exit stagnation pressure to inlet stagnation pressure across the rotating impeller of a centrifugal compressor, operating with a closed exit, is

Your answerChoose one option.

0.5

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Which one of the following is a hypergolic propellant combination used in rocket engines?

Your answerChoose one option.

Liquid hydrogen – liquid oxygen

Unsymmetrical dimethyl hydrazine – nitrogen tetroxide

Rocket fuel RP-1 – liquid oxygen

Liquid hydrogen – liquid fluorine

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In aircraft engine thermodynamic cycle analysis, perfectly expanded flow in the nozzle means that the static pressure in the flow at the nozzle exit is equal to

Your answerChoose one option.

the stagnation pressure at the engine inlet.

the stagnation pressure at the nozzle exit.

the ambient pressure at the nozzle exit.

the static pressure at the nozzle inlet.

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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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Burnout velocity of a space vehicle in circular orbit at an angle 5 degrees above the local horizon around earth is 13.5 km/s. Tangential velocity of the space vehicle in the orbit is ______ km/s (round off to two decimal places).

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GATE AE kind:question PYQs

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