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the net hydrostatic force (in kN) on the side face of the tank due to the air and water is ______(GATE-Aerospace-Engineering-2018)0 AnswerThe first law of thermodynamics is also known as conservation of (A) mass. (B) momentum. (C) energy. (D) species (GATE-Aerospace-Engineering-2018)1 AnswerIn an elliptic orbit around any planet, the location at which a spacecraft has the maximum angular velocity is (GATE-Aerospace-Engineering-2018)1 AnswerLet 𝑎⃗,𝑏⃗⃗ be two distinct vectors that are not parallel. The vector 𝑐⃗=𝑎⃗× 𝑏⃗⃗ is (A) zero. (B) orthogonal to 𝑎⃗ alone. (C) orthogonal to 𝑎⃗ + 𝑏⃗⃗. (D) orthogonal to 𝑏⃗⃗ alone. (GATE-Aerospace-Engineering-2018)0 AnswerThe theoretical maximum velocity (in m/s) of air expanding from a reservoir at 700 K is __________ (accurate to two decimal places). Specific heat of air at constant pressure is 1005 J/(kg-K). (GATE-Aerospace-Engineering-2018)1 AnswerAn airplane requires a longer ground roll to lift-off on hot summer days because (GATE-Aerospace-Engineering-2018)1 AnswerThe stagnation pressures at the inlet and exit of a subsonic intake are 100 kPa and 98 kPa, respectively. The pressure recovery of this intake will be ______ (accurate to two decimal places). (GATE-Aerospace-Engineering-2018)1 AnswerFor a damped single degree of freedom system with damping ratio of 0.1, ratio of two successive peak amplitudes of free vibration is ___________ (accurate to two decimal places). (GATE-Aerospace-Engineering-2018)1 AnswerThe pilot of a conventional airplane that is flying steady and level at some altitude, deflects the port side aileron up and the starboard aileron down. The aircraft will then (GATE-Aerospace-Engineering-2018)0 AnswerA combustor is operating with a fuel-air ratio of 0.03. If the stoichiometric fuel-air ratio of the fuel used is 0.06, the equivalence ratio of the combustor will be _______ (accurate to two decimal places). (GATE-Aerospace-Engineering-2018)1 AnswerThe relative velocity of air leaving a straight radial impeller of a centrifugal compressor is 100 m/s. If the impeller tip speed is 200 m/s, for a slip free operation, the absolute velocity (in m/s) at the impeller exit is _________ (accurate to one decimal place). (GATE-Aerospace-Engineering-2018)0 AnswerA thin-walled tube with external radius of 100 mm and wall thickness of 2 mm, is fixed at one end. It is subjected to a compressive force of 1 N acting at a point on the circumference parallel to its length. The maximum normal stress (in kPa) experienced by the structure is _____________ (accurate to two decimal places). (GATE-Aerospace-Engineering-2018)0 AnswerFind the sum to n terms of the series 10 + 84 + 734 + ... GATE-Instrumentational-Engineering-20131 AnswerList application of composite materials in Aerospace.1 AnswerAir at 50 kPa pressure and 400 K temperature flows in a duct at Mach 3.0. A part of the flow leaks through an opening on the duct wall into the ambient, where the pressure is 30 kPa. The maximum Mach number achieved in the discharge is _______ (accurate to two decimal places). (Ratio of specific heats of air is 𝛾=1.4). (GATE-Aerospace-Engineering-2018)0 AnswerAn aircraft has a steady rate of climb of 300 m/s at sea level and 150 m/s at 2500 m altitude. GATE-Aerospace Engineering-Question-20121 AnswerAssuming its differential gain to be 10 and the op-amp to be otherwise ideal, the CMRR is GATE-Instrumentational-Engineering-20131 AnswerChoose the grammatically CORRECT sentence: GATE-Instrumentational-Engineering-20131 AnswerThe value of k for which the system of equations x y kz x ky z + 2 1; 2 8 3 += ++= has no solution is GATE-Aerospace Engineering-Question-20121 AnswerWhat is the chance that a leap year, selected at random, will contain 53 Sundays? GATE-Instrumentational-Engineering-20131 Answer
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