Aerospace Engineering
2024 · Paper 1
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Complete GATE AE 2024 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 22–24 of 65. Imported answers require review unless explicitly marked reviewed.
Question 22
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On Day 1, an aircraft flies with a speed of V₁ m/s at an altitude where the temperature is T₁ K. On Day 2, the same aircraft flies with a speed √1.2 V₁ m/s at an altitude where the temperature is 1.2 T₁ K. How does the Mach number M₂ on Day 2 compare with the Mach number M₁ on Day 1?
Assume ideal gas behavior for air. Also assume the ratio of specific heats and molecular weight of air to be the same on both the days.
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Consider a steady, isentropic, supersonic flow (Mach number M > 1) entering a Convergent-Divergent (CD) duct as shown in the figure. Which one of the following options correctly describes the flow at the throat?
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Consider steady, incompressible, inviscid flow past two airfoils shown in the figure. The coefficient of pressure at the trailing edge of the airfoil with finite angle, shown in figure (I), is
, while that at the trailing edge of the airfoil with cusp, shown in figure (II), is
. Which one of the following options is TRUE? 
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