Engineering Sciences
GATE XE concept:dynamic-similarity PYQs
Build your understanding with focused practice from past exam papers.
How to practice concept:dynamic-similarity
Attempt a question, record the concept and assumptions, then check the available answer. Rework mistakes after revising the relevant concepts. Topic tags can overlap; review the question context.
Questions 1–2 of 2. Imported answers require independent review unless marked reviewed.
Question 39
Open questionXE-BNAT2 marksNeeds review
A ship is designed to sail at a speed of 8 m.s
. A designer makes a 1/10 scaled model to test the ship in a water tunnel. The model and the ship satisfy the dynamic similarity. The speed (in m.s
) of the model is __________. (rounded 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 answerQuestion 17
Open questionXE-BNAT2 marksNeeds review
A sphere model of 10 cm diameter is tested in water flowing at 2 m/s. The drag force is measured as 5 N. Prototype of 1.5 m in diameter is tested in air with dynamic similarity conditions. (Density of water is 1000 kg/m
, density of air is 1.2 kg/m
, viscosity of water is 0.001 Ns/m
and viscosity of air is 1.78 x 10
Ns/m
).Drag force experienced by the prototype is ______ N (rounded off to two decimal places).
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