Aerospace Engineering
2021 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE AE 2021 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 31–33 of 65. Imported answers require review unless explicitly marked reviewed.
Question 21
Open questionAENAT1 markNeeds review
A free vortex filament (oriented along Z-axis) of strength
m²/s is placed at the origin as shown in the figure. The circulation around the closed loop ABCDEFA for this flow is ______. 
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 22
Open questionAENAT1 markNeeds review
A thin-walled cylindrical tank with closed ends, made of homogeneous and isotropic material, is pressurized internally. If the hoop (circumferential) strain developed in the material is thrice the value of the axial strain then the Poisson’s ratio of the material is ______ (correct up to one decimal place).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answerQuestion 23
Open questionAENAT1 markNeeds review
A jet aircraft has the following specifications: wing loading = 1800 N/m², wing area = 30 m², drag polar
, and
. Take density of air at sea level as 1.225 kg/m³.The speed at which the aircraft achieves maximum endurance in a steady and level flight at sea level is ______ m/s (round off to two decimal places).
Log in to check the answer
You can attempt this question now. Sign in to view the answer key, explanations and discussion.Log in to check answer