Euler's number is the ratio of

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SDSC ISRO Technical Assistant Mechanical 4 June 2022 Official Paper
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  1. Inertia force to pressure force
  2. Inertia force to elastic force
  3. Inertia force to gravity force
  4. Pressure force to elastic force

Answer (Detailed Solution Below)

Option 1 : Inertia force to pressure force
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Detailed Solution

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Explanation:

Euler’s Number is defined as the square root of the ratio of the inertia force of a flowing fluid to the pressure force. Mathematically

Euler number 

Other important dimensionless numbers are described in the table below:

Reynold’s number

Froude Number

Mach Number

Weber Number

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